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Power Electronics Corporate Genealogy
ada cheng Page 1 6/13/11 19 18 19 17 19 16 Allmanna Svenska Elektrika Aktiebolaget 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 18 92 18 91 18 90 18 89 18 88 18 87 18 86 18 85 18 84 18 83 18 82 18 81 18 80 18 79 18 78 18 18 18 Original Name A-Systems ABB Acbel Polytech Acopian Technical Active Power Active Semiconductor Advanced Analogic Tech Allgemeine Elektricitat Gesellschaft (AEG) AEG Power Solutions Alcatel-Lucent Allegro Microsystems Amelco Semiconductor American Microsystems American Power Conversion Analog Devices Apex Microtechnology APtronic Applied Plasma Physics Argus Technology Computer Products Asea ASEA Power Systems Astec Power Astrodyne Ault Aura Systems Automatic Electric Balmar Basler Electric Company Bear Power Supplies Beckman Instruments BelFuse/BelPower Bell Labs Bellnix Benchmarq Microelectronics Bendix Best Power Technology Beta Dyne Bias Power Technology Bikor Boschert Inc. Bothhand Enterprise Bourns Brown Boveri & Cie Burle Technologies Burr Brown Bussmann C&D Technologies Calex Manufacturing Catalyst Semiconductor Cherokee International Cherry Semiconductor Chicony Electronics 18 77 76 Power Electronics Corporate Genealogy ada cheng Page 2 6/13/11 19 18 19 17 19 16 Merged with Thomson-Houston to form GE Merged with other Edison companies to form Edison General Electric 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 18 92 18 91 18 90 18 89 18 88 18 87 18 86 18 85 18 84 18 83 18 82 18 81 18 80 18 18 18 18 18 Original Name Patil Systems Clevite Transistor Products Claude Lyons CogniPower GTI Power Systems Combined Technologies Communication Instruments Inc (CII Technologies) Communications & Power Industries Compagnie des Freins et Signaux Condor DC Power Supplies Controlled Power C&E Cooper 1833 Cooper-Hewitt ELCO CPI International Cree Cutter Electric & Manufacturing CyberPower Systems Dallas Semiconductor Delco Delta Electronics Densei-Lambda di/dt Digitronics Diodes ETA Electronics Industry ETM Electromatic Tobersen Gear and Axle Edal Industries Edison General Electric Edison Light Company Elantec Semiconductor Electromanufactuas, S.A. de C.V. (EMSA) Electronic Transistors (ETCo) Electronic Specialists Electrowatt Eltek Energy Eltek Semiconductor Eltek Valere Emerson Network Power EMRISE Enerpro Ericsson EUPEC Exar Exide Electronics Group Exide Technologies Fairchild Semiconductor Falcon Electric Fayetteville Transformer Ferranti Ltd Ferranti Hammond Electric Light Ferranti, Thompson and Ince 18 79 78 77 76 Power Electronics Corporate Genealogy ada cheng 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 Page 3 18 92 18 91 18 90 18 89 18 88 18 87 18 86 18 85 18 84 18 83 18 82 18 81 18 80 18 79 18 78 18 18 18 Original Name Freescale Semiconductor Friemann & Wolf Duisburg (FRIWO) Friemann & Wolf Gerätebau (FRIWO) FSP Group Furman Sound Gaia Converter Galaxy Power GEC Plessey Semiconductors General Atomics Energy Products General Electric General Instruments General Microelectronics General Semiconductor General Telephone and Electronics General Transistor General Transistor Germanium Products Gould Storage Battery Hackbridge and Hewittic Electric Co., Ltd. Harris (Semiconductor) Electric Heating Apparatus Hind Rectifiers Ltd Hipro Electronics Hitachi Honeywell Huntkey Enterprise Group Hytek Microsystems Computing-Tabulating-Recording (C-T-R) Infineon Interdesign International Rectifier Intersil Invensys ITE Imperial IXYS iWatt Jenkins Electric Company JJ Electronic Kearney Kemet Kepco Kyle Corporation Lambda Electronics Leader Electronics Liebert Line Material Lineage Power Linear Technology Lite-On Technology Littlefuse Litton Engineering Laboratories Magnetek Marvell Technology 18 77 76 Power Electronics Corporate Genealogy ada cheng 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 Page 4 18 92 18 91 18 90 18 89 18 88 18 87 18 86 18 85 18 84 18 83 18 82 18 81 18 18 18 18 18 18 Original Name Maxim Integrated Products Maxwell Laboratories McGraw Electric McGraw-Edison Mean Well Enterprises Micrel Micro-Rel Microchip Technology Micro Linear MicroPlanet Technology Microsemiconductor Mitel Mitsubishi Electric Mobiletron Electronics Molectro Science Monolithic Power Systems Motorola MS Kennedy Murata Manufacturing Natel Engineering National Semiconductor National Union Radio NEMIC (Nippon Electronic Memory Industry Company) NEMIC-Lambda NetPower Technologies NXP Semiconductor O2Micro Oki Power Tech OmniRel ON Semiconductor OnLine Power Optimum Power Conversion Opto 22 Oryx Technology Pacific Semiconductors Partner Technologies Pascall Electronics PECO II Pennsylvania Transformer Technology Phihong Philco Philco Ford Microelectronics Philips (Semiconductor) Photonis Picor (Vicor) Pioneer Magnetics Plessey Power-One Power Paragon Power Trends PowerBright PowerDsine Powerex 18 80 79 78 77 76 Power Electronics Corporate Genealogy ada cheng Page 5 6/13/11 19 18 19 17 19 16 Went into receivership 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 18 92 18 91 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 Original Name Precision Monolithics Primarion Programmable Power Supply PULS Pulse Engineering Q.R.S. Music Qspeed Semiconductor Quantex Capital Radiation Radio Corporation of America (RCA) Radio Electronics & Television Manufacturers Association (RETMA) Radio Receptor Raytheon Renesas Technology REO Rheem Semiconductor RO Associates Rockwell Microelectronics RTE S. Z. de Ferranti Salcomp Samlex America Samsung Toho Sanken Electric SatCon Technology SB Electronics Schneider Electric 1836 Schrack Seletron Setec SGS-Fairchild SGS-Microelecttronica SGS-Thompson Shindengen Electric Manufacturing Shockley Transistor Siebe 1819 Siemens 1847 Telegraphen-Bau-Anstalt von Siemens & Halske Signetics Silcon A/S Silicon General Semiconductors Silicon Link Siliconix Sipex G-L Electronics SL Power Electronics SmartPower Systems Société Generale Semiconduttori (SGS) Sola Electric Sola/Hevi-Duty Solomon Solomon Technologies Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering Company) SPD Technologies 18 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 Power Electronics Corporate Genealogy ada cheng Page 6 6/13/11 19 18 19 17 19 16 Sprague Electric Railway and Motor Company 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 18 92 18 91 18 90 18 89 18 88 18 87 18 86 18 85 18 84 18 83 18 82 18 81 18 80 18 79 18 18 18 18 Original Name Sprague Electric Staco Energy Products Summit Microelectronics Sylvania Synqor Tamura TDI Power TDK Teccor Electronics Technitrol Telcom Semiconductor Teledyne Telefunken Electronic TEMIC Semiconductors Teridian Semiconductor (TSC) TESLAco Texas Instruments Thales Thomson Semiconducteurs Thomson-Houston Toshiba Tranformer and Electrical Company Ltd (TEC) Transistor Products Transitron TRW LSI Tsi Power Tyco Tyco Electronics US Digital Unison Technology Unitech Unitrode Valere Power Varian Associates Veeco Vicor Vincotech Virginia Transformer Vishay Volterra Semiconductor VPT WDC Technologies Western Electric Manufacturing 1869 Westinghouse Electric & Manufacturing Xandex Xantrex Technology Mitel Semiconductors Zeftronics Zetex Semiconductors Zilker Labs 18 78 77 76 Power Electronics Corporate Genealogy 6109 5198 19 5187 19 5176 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 3965 198 3954 198 3943 198 3932 198 3921 198 3910 198 3809 198 2898 198 2887 198 2876 198 2865 198 2854 198 2843 198 2832 198 2821 198 2810 198 2709 198 1798 198 198 198 19 19 19 19 19 19 19 ada cheng 198 1787 1776 16 15 14 13 11 12 10 09 08 Original Name A-Systems ABB Acbel Polytech Acopian Technical Active Power Active Semiconductor Advanced Analogic Tech Allgemeine Elektricitat Gesellschaft (AEG) AEG Power Solutions Alcatel-Lucent Allegro Microsystems Amelco Semiconductor American Microsystems American Power Conversion Analog Devices Apex Microtechnology APtronic Applied Plasma Physics Argus Technology Computer Products Asea ASEA Power Systems Astec Power Astrodyne Ault Aura Systems Automatic Electric Balmar Basler Electric Company Bear Power Supplies Beckman Instruments BelFuse/BelPower Bell Labs Bellnix Benchmarq Microelectronics Bendix Best Power Technology Beta Dyne Bias Power Technology Bikor Boschert Inc. Bothhand Enterprise Bourns Brown Boveri & Cie Burle Technologies Burr Brown Bussmann C&D Technologies Calex Manufacturing Catalyst Semiconductor Cherokee International Cherry Semiconductor Chicony Electronics 19 07 19 19 19 06 Power Electronics Corporate Genealogy Sprague Semiconductor Merged into General T Acquired by Max McGraw (later McGraw-Edison) Page 7 6/13/11 Page 8 6/13/11 6109 5198 19 5187 19 5176 Communication & Power Industries 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 3965 3954 3943 3932 3921 3910 3809 2898 2887 2876 2865 2854 2843 2832 2821 2810 2709 1798 1787 1776 16 15 14 13 11 12 10 09 08 Original Name Patil Systems Clevite Transistor Products Cleveland Graphic Bronze; later Clevite Corp. Claude Lyons CogniPower GTI Power Systems Combined Technologies Communication Instruments Inc (CII Technologies) Communications & Power Industries Compagnie des Freins et Signaux Condor DC Power Supplies Controlled Power C&E Cooper Cooper-Hewitt Acquired by GE ELCO CPI International Cree Cutter Electric & Manufacturing Changed name to I-T-E Circuit Breaker CyberPower Systems Dallas Semiconductor Delco Acquired by United Motors Delta Electronics Densei-Lambda di/dt Digitronics Diodes ETA Electronics Industry ETM Electromatic Tobersen Gear and Axle Edal Industries Edison General Electric Edison Light Company Elantec Semiconductor Electromanufactuas, S.A. de C.V. (EMSA) Electronic Transistors (ETCo) Electronic Specialists Electrowatt Eltek Energy Eltek Semiconductor Eltek Valere Emerson Network Power EMRISE Enerpro Ericsson EUPEC Exar Exide Electronics Group Exide Technologies Fairchild Semiconductor Falcon Electric Fayetteville Transformer Ferranti Ltd Ferranti Hammond Electric Light Ferranti, Thompson and Ince 19 07 19 19 19 06 Power Electronics Corporate Genealogy 6109 5198 19 5187 19 5176 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 3965 198 3954 198 3943 198 3932 198 3921 198 3910 198 3809 198 2898 198 2887 198 2876 198 2865 198 2854 198 2843 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 2832 2821 2810 2709 1798 1787 1776 16 15 14 13 11 12 10 09 08 Original Name Freescale Semiconductor Friemann & Wolf Duisburg (FRIWO) Friemann & Wolf Gerätebau (FRIWO) FSP Group Furman Sound Gaia Converter Galaxy Power GEC Plessey Semiconductors General Atomics Energy Products General Electric General Instruments General Microelectronics General Semiconductor General Telephone and Electronics General Transistor General Transistor Germanium Products Gould Storage Battery Hackbridge and Hewittic Electric Co., Ltd. Harris (Semiconductor) Electric Heating Apparatus Hind Rectifiers Ltd Hipro Electronics Hitachi Honeywell Huntkey Enterprise Group Hytek Microsystems Computing-Tabulating-Recording (C-T-R) Infineon Interdesign International Rectifier Intersil Invensys ITE Imperial IXYS iWatt Jenkins Electric Company JJ Electronic Kearney Kemet Kemet Laboratories Kepco Kyle Corporation Lambda Electronics Leader Electronics Liebert Line Material Lineage Power Linear Technology Lite-On Technology Littlefuse Litton Engineering Laboratories Magnetek Marvell Technology 19 07 19 19 19 06 Power Electronics Corporate Genealogy Merged with Automati Acquired by Line Material Acquired by McGraw Electric Litton Industries Page 9 6/13/11 6109 5198 19 5187 19 5176 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 3965 198 3954 198 3943 198 3932 198 3921 198 3910 198 3809 198 2898 198 2887 198 2876 198 2865 198 2854 198 2843 198 2832 198 2821 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 2810 2709 1798 1787 1776 16 15 14 13 11 12 10 09 08 Original Name Maxim Integrated Products Maxwell Laboratories McGraw Electric McGraw-Edison Mean Well Enterprises Micrel Micro-Rel Microchip Technology Micro Linear MicroPlanet Technology Microsemiconductor Mitel Mitsubishi Electric Mobiletron Electronics Molectro Science Monolithic Power Systems Motorola MS Kennedy Murata Manufacturing Natel Engineering National Semiconductor National Union Radio NEMIC (Nippon Electronic Memory Industry Company) NEMIC-Lambda NetPower Technologies NXP Semiconductor O2Micro Oki Power Tech OmniRel ON Semiconductor OnLine Power Optimum Power Conversion Opto 22 Oryx Technology Pacific Semiconductors Partner Technologies Pascall Electronics PECO II Pennsylvania Transformer Technology Phihong Philco Philco Ford Microelectronics Philips (Semiconductor) Photonis Picor (Vicor) Pioneer Magnetics Plessey Power-One Power Paragon Power Trends PowerBright PowerDsine Powerex 19 07 19 19 19 06 Power Electronics Corporate Genealogy Merged with Pennsylvania Transfo Microsemiconductor Changed name to National Un Hughes Semiconductor Division Page 10 6/13/11 6109 5198 19 5187 19 5176 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 3965 198 3954 198 3943 198 3932 198 3921 198 3910 198 3809 198 2898 198 2887 198 2876 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 2865 2854 2843 2832 2821 2810 2709 1798 1787 1776 16 15 14 13 11 12 10 09 08 Original Name Precision Monolithics Primarion Programmable Power Supply PULS Pulse Engineering Q.R.S. Music Qspeed Semiconductor Quantex Capital Radiation Radio Corporation of America (RCA) Radio Electronics & Television Manufacturers Association (RETMA) Radio Receptor Raytheon Renesas Technology REO Rheem Semiconductor RO Associates Rockwell Microelectronics RTE S. Z. de Ferranti Salcomp Samlex America Samsung Toho Sanken Electric SatCon Technology SB Electronics Schneider Electric Schrack Seletron Setec SGS-Fairchild SGS-Microelecttronica SGS-Thompson Shindengen Electric Manufacturing Shockley Transistor Siebe Siemens Signetics Silcon A/S Silicon General Semiconductors Silicon Link Siliconix Sipex G-L Electronics SL Power Electronics SmartPower Systems Société Generale Semiconduttori (SGS) Sola Electric Sola/Hevi-Duty Solomon Solomon Technologies Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering Company) SPD Technologies 19 07 19 19 19 06 Power Electronics Corporate Genealogy Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering Page 11 6/13/11 6109 5198 19 5187 19 5176 6/13/11 19 5165 19 5154 19 5143 19 19 1512 5132 19 5110 19 5009 19 4098 19 4087 19 4076 19 4065 19 4054 19 4043 19 4032 19 4021 19 4010 19 4909 19 3998 198 3987 198 3976 198 3965 198 3954 198 3943 Page 12 198 3932 198 3921 198 3910 198 3809 198 2898 198 2887 198 2876 198 2865 198 2854 198 2843 198 2832 198 2821 198 2810 198 2709 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 1798 1787 1776 16 15 14 13 11 12 10 09 08 Original Name Sprague Electric Staco Energy Products Summit Microelectronics Sylvania Synqor Tamura TDI Power TDK Teccor Electronics Technitrol Telcom Semiconductor Teledyne Telefunken Electronic TEMIC Semiconductors Teridian Semiconductor (TSC) TESLAco Texas Instruments Thales Thomson Semiconducteurs Thomson-Houston Toshiba Tranformer and Electrical Company Ltd (TEC) Transistor Products Transitron TRW LSI Tsi Power Tyco Tyco Electronics US Digital Unison Technology Unitech Unitrode Valere Power Varian Associates Veeco Vicor Vincotech Virginia Transformer Vishay Volterra Semiconductor VPT WDC Technologies Western Electric Manufacturing Westinghouse Electric & Manufacturing Xandex Xantrex Technology Mitel Semiconductors Zeftronics Zetex Semiconductors Zilker Labs 19 07 19 19 19 06 Power Electronics Corporate Genealogy 0119 0108 2109 9197 2109 9186 19 9175 19 9164 19 9153 19 19 1913 9142 19 9120 19 9019 19 9008 19 8097 19 8086 19 8075 19 8064 19 8053 19 8042 19 8031 19 8020 19 8919 19 8908 198 7997 198 7986 198 7975 198 7964 198 7953 198 7942 198 7931 198 7920 198 7819 198 7808 198 6897 198 6886 198 6875 198 6864 198 6853 198 6842 198 6831 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 Original Name A-Systems ABB Acbel Polytech Acopian Technical Active Power Active Semiconductor Advanced Analogic Tech Allgemeine Elektricitat Gesellschaft (AEG) AEG Power Solutions Alcatel-Lucent Allegro Microsystems Sprague Semiconductor Amelco Semiconductor American Microsystems American Power Conversion Analog Devices Apex Microtechnology APtronic Applied Plasma Physics Argus Technology Computer Products Asea ASEA Power Systems Astec Power Astrodyne Ault Aura Systems Automatic Electric Merged into General Telephone Balmar Basler Electric Company Bear Power Supplies Beckman Instruments BelFuse/BelPower Bell Labs Bellnix Benchmarq Microelectronics Bendix Best Power Technology Beta Dyne Bias Power Technology Bikor Boschert Inc. Bothhand Enterprise Bourns Brown Boveri & Cie Burle Technologies Burr Brown Bussmann C&D Technologies Calex Manufacturing Catalyst Semiconductor Cherokee International Cherry Semiconductor Chicony Electronics 19 48 19 19 19 47 Power Electronics Corporate Genealogy Acquired by Diamler Benz Acquired by Sanken Electric Spun out of Teledyne as Telcom S Renamed Teledyne Semiconductor American Microsystems Computer Products Renamed Artesyn Tec Merged with Brown Boveri & Cie to form ABB BelPower founded Spun out of AT&T as part of AT&T Technologies; later Lucent Technolo Acquired by Allied Corp. Acquired by General Sign ? Acquired by Microsemi Acquired by Cherokee Acquired by Computer Products (Artesyn) Merged with ASEA to form ABB Page 13 6/13/11 Page 14 0119 0108 2109 9197 2109 9186 19 9175 19 9164 19 9153 19 19 1913 9142 19 9120 19 9019 19 9008 19 8097 19 8086 19 8075 19 8064 19 8053 19 8042 19 8031 19 8020 19 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 19 8919 8908 7997 7986 7975 7964 7953 7942 7931 7920 7819 7808 6897 6886 6875 6864 6853 6842 6831 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 Original Name Patil Systems Clevite Transistor Products Acquired by ITT Claude Lyons CogniPower GTI Power Systems Combined Technologies Communication Instruments Inc (CII Technologies) Communications & Power Industries Compagnie des Freins et Signaux Acquired by Société de Mécanique et de Chaudronnerie de Pons (SMCP) Condor DC Power Supplies Controlled Power C&E Cooper Cooper-Hewitt ELCO CPI International Cree Cutter Electric & Manufacturing Merged with Imperial-Eastman to become ITE Imperial CyberPower Systems Dallas Semiconductor Delco Delta Electronics Densei-Lambda di/dt Digitronics Diodes ETA Electronics Industry ETM Electromatic Tobersen Gear and Axle Edal Industries Edison General Electric Edison Light Company Elantec Semiconductor Electromanufactuas, S.A. de C.V. (EMSA) Electronic Transistors (ETCo) Electronic Specialists Electrowatt Eltek Energy Eltek Semiconductor Eltek Valere Emerson Network Power EMRISE Enerpro Ericsson EUPEC Exar Exide Electronics Group Exide Technologies Fairchild Semiconductor Falcon Electric Fayetteville Transformer Ferranti Ltd Ferranti Hammond Electric Light Ferranti, Thompson and Ince 19 48 19 19 19 47 Power Electronics Corporate Genealogy Acquired by RTE Spun out of Varian Associates Acquired by SL Industries Acquired by Siem Merger of Siemens & AEG divisions Acquired by BTR Acquired by National SemiconductorSpun out of National S Microelectronics soldBankrupt to plessey 6/13/11 0119 0108 9197 9186 9175 9164 9153 1913 9142 9120 9019 9008 8097 8086 8075 8064 8053 8042 8031 8020 8919 8908 7997 7986 7975 7964 7953 7942 7931 7920 7819 7808 6897 6886 6875 6864 6853 6842 6831 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 ada cheng Page 15 6/13/11 2109 2109 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 19 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 Original Name Freescale Semiconductor Friemann & Wolf Duisburg (FRIWO) Acquired by CEAG Friemann & Wolf Gerätebau (FRIWO) Changed name to FRIWO FSP Group Furman Sound Gaia Converter Galaxy Power GEC Plessey Semiconductors General Atomics Energy Products General Electric GE Solid State sold to Harris General Instruments Spun out microelectronics group as Microchip Tec General Microelectronics Acquired by Philco-Ford Microelectronics General Semiconductor General Telephone and Electronics Merged with Automatic Electric General Transistor Acquired by General Instruments General Transistor Germanium Products Gould Storage Battery Acquired by Japan Energy Hackbridge and Hewittic Electric Co., Ltd. Harris (Semiconductor) Electric Heating Apparatus Merged with Sola Electric to fo Hind Rectifiers Ltd Also known as Hirec Hipro Electronics ?? Not sure when founded Hitachi Honeywell Huntkey Enterprise Group Hytek Microsystems Computing-Tabulating-Recording (C-T-R) Infineon Interdesign Monochip brand Acquired by Ferranti International Rectifier Intersil Acquired by GE Invensys ITE Imperial Acquired by Gould IXYS iWatt Jenkins Electric Company JJ Electronic Kearney Acquired by Coop Kemet Kepco Kyle Corporation Lambda Electronics Acquired by Veeco Leader Electronics Liebert Acquired by Emerson Line Material Lineage Power Linear Technology Lite-On Technology Littlefuse Litton EngineeringLitton Laboratories Industries Magnetek Marvell Technology 19 48 19 19 19 47 Power Electronics Corporate Genealogy ada cheng 0119 0108 2109 9197 2109 9186 19 9175 19 9164 19 9153 19 19 1913 9142 19 9120 19 9019 19 9008 19 8097 19 8086 19 8075 19 8064 19 8053 19 8042 19 8031 19 8020 19 8919 19 8908 198 7997 198 7986 198 7975 198 7964 198 7953 198 7942 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 19 19 19 19 Original Name Maxim Integrated Products Maxwell Laboratories McGraw Electric Merged with Pennsylvania Transformer McGraw-Edison Mean Well Enterprises Micrel Micro-Rel Microchip Technology Micro Linear MicroPlanet Technology Microsemiconductor Microsemiconductor Mitel Mitsubishi Electric Mobiletron Electronics Molectro Science Monolithic Power Systems Motorola MS Kennedy Murata Manufacturing Natel Engineering National Semiconductor National Union Radio Changed name to National Merged Unionwith Electric Eureka-Williams NEMIC (Nippon Electronic Memory Industry Company) NEMIC-Lambda NetPower Technologies NXP Semiconductor O2Micro Oki Power Tech OmniRel ON Semiconductor OnLine Power Optimum Power Conversion Opto 22 Oryx Technology es Semiconductor Pacific Semiconductors Division Partner Technologies Pascall Electronics PECO II Pennsylvania Transformer Technology Phihong Philco Acquired by Ford Motor Company (now Visteon) Philco Ford Microelectronics Philips (Semiconductor) Photonis Picor (Vicor) Pioneer Magnetics Plessey Semis began Power-One Power Paragon Power Trends PowerBright PowerDsine Powerex 198 7931 7920 7819 7808 6897 6886 6875 6864 6853 6842 6831 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 48 47 Power Electronics Corporate Genealogy Spun out of General Instruments Changed name to Microsemi Acquired Siltex for semis start Spun out Fairchild Se Acquired by Electrolux Page 16 Acquired by Intelek Acquired by GEC & Siemens AG consortium Acquired by SPD 6/13/11 ada cheng Page 17 0119 0108 2109 9197 2109 9186 19 9175 19 9164 19 9153 19 19 1913 9142 19 9120 19 9019 19 9008 19 8097 19 8086 19 8075 19 8064 19 8053 19 8042 19 8031 19 8020 19 8919 19 8908 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 19 19 19 19 Original Name Precision Monolithics Primarion Programmable Power Supply PULS Pulse Engineering Q.R.S. Music Qspeed Semiconductor Quantex Capital Radiation Acquired by Harris Radio Corporation of America (RCA) Radio Electronics & Television Manufacturers Association (RETMA) Radio Receptor Acquired by General Instruments Raytheon Renesas Technology REO Rheem Semiconductor Acquired by Raytheon RO Associates Rockwell Microelectronics RTE S. Z. de Ferranti Salcomp Samlex America Samsung Toho Sanken Electric SatCon Technology SB Electronics Schneider Electric Schrack Seletron Setec SGS-Fairchild SGS-Microelecttronica SGS-Thompson Shindengen Electric Manufacturing Shockley Transistor Siebe Siemens Signetics Acquired by Philips Silcon A/S Silicon General Semiconductors Silicon Link Siliconix Sipex G-L Electronics Went public as G-L Industries Changed name to SGL Industries SL Power Electronics SmartPower Systems Société Generale Semiconduttori (SGS) Sola Electric Acquired by Basic Products Sola/Hevi-Duty Solomon Solomon Technologies o Tsushin Kogyo Tokyo Tsushin (Tokyo Telecommunications Kogyo (Tokyo Telecommunications Engineering Company) Engineering Company) SPD Technologies 198 7997 7986 7975 7964 7953 7942 7931 7920 7819 7808 6897 6886 6875 6864 6853 6842 6831 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 48 47 Power Electronics Corporate Genealogy Acquired by Analog Devices Acquired by Bel Fuse Beddis International Acquired by GE Acquired by Cooper Acquired by Nokia Acquired by Siemens (Ele Changed name to Acquired by SymmetriCon Acquired by Vishay Renamed SL Industries 6/13/11 0119 0108 2109 9197 2109 9186 19 9175 19 9164 19 9153 19 19 1913 9142 19 9120 19 9019 19 9008 19 8097 19 8086 19 8075 19 8064 19 8053 19 8042 19 8031 19 8020 19 8919 19 8908 198 7997 198 7986 198 7975 198 7964 198 7953 198 7942 198 7931 198 7920 198 7819 198 7808 198 6897 198 6886 198 198 198 198 198 198 198 198 198 198 198 19 19 19 19 19 19 19 ada cheng 198 6875 6864 6853 6842 6831 6820 6719 6708 5797 5786 57 56 55 54 53 52 51 50 49 Original Name Sprague Electric Staco Energy Products Summit Microelectronics Sylvania Merged with General Telephone Synqor Tamura TDI Power TDK Teccor Electronics Technitrol Telcom Semiconductor Teledyne Telefunken Electronic TEMIC Semiconductors Teridian Semiconductor (TSC) TESLAco Texas Instruments Thales Thomson Semiconducteurs Thomson-Houston Toshiba Tranformer and Electrical Company Ltd (TEC) Transistor Products Transitron TRW LSI Tsi Power Tyco Tyco Electronics US Digital Unison Technology Unitech Unitrode Valere Power Varian Associates Veeco Vicor Vincotech Virginia Transformer Vishay Volterra Semiconductor VPT WDC Technologies Western Electric Manufacturing Westinghouse Electric & Manufacturing Xandex Xantrex Technology Mitel Semiconductors Zeftronics Zetex Semiconductors Zilker Labs 19 48 19 19 19 47 Power Electronics Corporate Genealogy Acquired by Vishay Merged with SGS Microelectronica to form SGS-Thompso Acquired by Raytheon Semiconductor ?? ?? Acquired by Siebe Acquired by Unitech Lucent Technologies Page 18 6/13/11 ada cheng Page 19 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 18 18 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 19 19 19 19 Original Name Most Recent Name A-Systems ABB Acbel Polytech Acopian Technical Active Power Active Semiconductor Advanced Analogic Tech Allgemeine Elektricitat Gesellschaft (AEG) AEG AEG Power Solutions Alcatel-Lucent Allegro Microsystems Amelco Semiconductor Spun out of Teledyne as Telcom Semiconductor American Microsystems Renamed AMI Semiconductor Acquired AMI Semiconductor by On Semiconductor American Power Conversion Acquired by Schneider Electric Analog Devices Apex Microtechnology Acquired by Cirrus Logic APtronic Applied Plasma Physics Argus Technology Computer Products Renamed Artesyn Technologies Acquired by Artsyn Emerson Technologies MergedAsea with Brown Boveri & Cie to form ABB ASEA Power Systems Astec Power Acquired by Emerson Astrodyne Ault Acquired by SL Industries Aura Systems Automatic Electric Balmar Basler Electric Company Bear Power Supplies Beckman Instruments BelFuse/BelPower AT&T as part BellofLabs AT&T Technologies; later Lucent Technologies Lucent Technologies Bellnix Benchmarq Microelectronics Acquired by Unitrode Bendix Best Power Technology Acquired by General Signal Beta Dyne Bias Power Technology Bikor Acquired by Cherokee International Boschert Inc. Bothhand Enterprise Bourns Brown Boveri & Cie Burle Technologies Acquired by Photonis Burr Brown Acquired by Texas Instruments Bussmann McGraw-Edison C&D Technologies Calex Manufacturing Catalyst Semiconductor Acquired by On Semiconductor Cherokee International Acquired by Lineage Power Cherry Semiconductor Acquired by On Semiconductor Chicony Electronics 18 92 91 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 89 88 Power Electronics Corporate Genealogy 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 Page 20 18 92 18 91 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 ada cheng 18 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 Original Name Most Recent Name Patil Systems Cirrus Logic Clevite Transistor Products Claude Lyons CogniPower GTI Power Systems Acquired Coldwatt by Flextronics Combined Technologies Communication Instruments Inc (CII Technologies) Acquired by Tyco Communications Spun & Power out Industries of Varian Associates Compagnie des Freins et Signaux Condor DC Acquired Power by Supplies SL Industries Controlled Power C&E Cooper Cooper Industries Cooper-Hewitt ELCO Cosel CPI International Cree Cutter Electric & Manufacturing CyberPower Systems Dallas Semiconductor Acquired by Maxim Integrated Products Delco Delta Electronics Densei-Lambda Acquired by TDK di/dt Acquired by Power-One Digitronics Diodes ETA Electronics Industry ETM Electromatic Tobersen Gear and Axle Eaton Edal Industries Edison General Electric Edison Light Company Elantec Semiconductor Acquired by Intersil Electromanufactuas, S.A. de C.V. (EMSA) Acquired by Cooper Power Systems Electronic Transistors (ETCo) Electronic Specialists Electrowatt Acquired by Siemens Eltek Energy Merged with Valere Power Eltek Semiconductor Eltek Valere Emerson Network Power EMRISE Enerpro Ericsson EUPEC Acquired by Infineon Exar Exide Electronics Group Acquired by BTR Exide Technologies Fairchild Semiconductor Spun out of National Semiconductor Falcon Electric Fayetteville Transformer Ferranti Ltd Ferranti Hammond Electric Light Ferranti, Thompson and Ince 19 89 19 19 19 88 Power Electronics Corporate Genealogy 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 Page 21 18 92 18 91 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 19 ada cheng 18 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 89 Original Name Most Recent Name Freescale Semiconductor Friemann & Wolf Duisburg (FRIWO) Friemann & Wolf Gerätebau Changed (FRIWO) name to FRIWO FRIWO FSP Group Furman Sound Acquired by Panamax Gaia Converter Galaxy Power Acquired by BelPower GEC Plessey Semiconductors Acquired by Mitel (eventually Zarlink Semiconductors) General Atomics Energy Products General Electric Spun General out microelectronics Instruments group as Microchip Acquired Technology by Motorola General Microelectronics General Semiconductor Acquired by Vishay General Telephone and Electronics GTE General Transistor General Transistor Germanium Products Gould Storage Battery Hackbridge and Hewittic Electric Co., Ltd. Harris (Semiconductor) Spun out as Intersil Electric Heating Apparatus Merged with Sola Electric to form Sola Hevi-Duty Hevi-Duty Electric Hind Rectifiers Ltd Hipro Electronics Acquired by Chicony Electronics Hitachi Merged into Renesas Honeywell Huntkey Enterprise Group Hytek Microsystems Acquired by Natel Engineering Computing-Tabulating-Recording (C-T-R) IBM Infineon Interdesign International Rectifier Intersil Invensys ITE Imperial IXYS iWatt Jenkins Electric Company JJ Electronic Kearney Acquired by Cooper Power Systems Kemet Kepco Kyle Corporation Lambda Electronics Leader Electronics Liebert Line Material Lineage Power Linear Technology Lite-On Technology Acquired/sold by Vishay Littlefuse Litton Engineering Laboratories Acquired by Northrup Grumman Litton Industries Magnetek Marvell Technology 19 19 19 88 Power Electronics Corporate Genealogy 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 94 18 93 Page 22 18 92 18 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 19 ada cheng 18 91 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 89 Original Name Most Recent Name Maxim Integrated Products Acquired Dallas Semiconductor Maxwell Laboratories Maxwell Technologies McGraw Electric McGraw-Edison Mean Well Enterprises Micrel Micro-Rel Microchip Technology Micro Linear Acqired by Sirenza Microdevices MicroPlanet Technology Microsemiconductor Microsemi Mitel Mitsubishi Electric Mobiletron Electronics Molectro Science Monolithic Power Systems Motorola MS Kennedy Acquired by Anaren Murata Manufacturing Natel Engineering National Semiconductor Spun out Fairchild Semiconductor National Union Radio National Union Electric NEMIC (Nippon Electronic Memory Industry Company) NEMIC-Lambda Merged with Nippon Electric to form Densei NetPower Technologies NXP Semiconductor O2Micro Oki Power Tech OmniRel Acquired by International Rectifier ON Semiconductor OnLine Power Optimum Power Conversion Opto 22 Oryx Technology Pacific Semiconductors Partner Technologies Pascall Electronics Acquired by Intelek PECO II Pennsylvania Transformer Technology Phihong Philco Philco Ford Microelectronics Philips (Semiconductor) Photonis Picor (Vicor) Pioneer Magnetics Acquired Plessey by GEC & Siemens AG consortium Power-One Power Paragon Acquired by SPD Technologies Power Trends Acquired by Texas Instruments PowerBright PowerDsine Powerex 19 19 19 88 Power Electronics Corporate Genealogy Page 23 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 05 19 04 19 03 19 02 19 01 19 00 19 99 19 98 18 97 18 96 18 95 18 18 18 18 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 ada cheng 18 94 93 92 91 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 Original Name Most Recent Name Precision Monolithics Primarion Acquired by Infineon Programmable Power Supply PULS Pulse EngineeringAcquired by Bel Fuse Pulse Q.R.S. Music Qspeed Semiconductor QuantexBeddis CapitalInternational Radiation Radio Corporation of America (RCA) Radio Electronics & Television Manufacturers Association (RETMA) Electronics Industries Alliance (EIA) Radio Receptor Raytheon Renesas Technology REO Rheem Semiconductor RO Associates Acquired by EMRISE Rockwell Microelectronics Spun out as Conexant Conexant RTE S. Z. de Ferranti Salcomp Samlex America Samsung Toho Sanken Electric Sanken Electric SatCon Technology SB Electronics Schneider Electric Schrack Acquired by Siemens (Electromechanical Components) Seletron Setec SGS-Fairchild SGS-Microelecttronica SGS-Thompson Changed name to STMicroelectronics STMicroelectronics Shindengen Electric Manufacturing Shockley Transistor Siebe Merged with BTR to form Invensys Siemens Signetics Silcon A/S Silicon General Acquired Semiconductors by SymmetriCon Silicon Link Siliconix Sipex G-L Electronics SL Industries SL Power Electronics SmartPower Systems Société Generale Semiconduttori (SGS) Sola Electric Sola/Hevi-Duty Solomon Solomon Technologies Tokyo Tsushin Kogyo (Tokyo Telecommunications Engineering Company) Sony SPD Technologies 19 89 19 19 19 88 Power Electronics Corporate Genealogy ada cheng Page 24 19 18 19 17 19 16 6/13/11 19 15 19 14 19 13 19 19 11 12 19 10 19 09 19 08 19 07 19 06 19 19 19 19 19 19 19 18 18 18 18 18 18 18 18 18 18 18 18 18 2108 2108 2108 2108 2108 2108 2108 2108 2108 2108 198 19 19 19 19 19 19 19 19 19 19 19 Original Name Most Recent Name Sprague Electric Staco Energy Products Summit Microelectronics Sylvania Synqor Tamura TDI Power TDK Teccor Electronics Technitrol Telcom Semiconductor Acquired by Microchip Teledyne Telefunken Electronic TEMIC Semiconductors Acquired by Vishay Teridian Semiconductor (TSC) TESLAco Texas Instruments Thales Merged with Thomson SGS Microelectronica Semiconducteurs to form SGS-Thompson Thomson-Houston Toshiba Tranformer and Electrical Company Ltd (TEC) Transistor Products Transitron TRW LSI Acquired by Raytheon Semiconductors Tsi Power Tyco Tyco Electronics US Digital Unison Technology Unitech Acquired by Siebe Unitrode Acquired by Texas Instruments Valere Power Merged with Eltek Energy Varian Associates Veeco Vicor Vincotech Part of Lineage Holdings Virginia Transformer Vishay Volterra Semiconductor VPT Acquired by HEICO Corp WDC Technologies Western Electric Manufacturing Westinghouse Electric & Manufacturing Xandex Xantrex Technology Acquired by Schneider Electric (inverters) and Ametek (programmable power unit). Mitel Semiconductors Zarlink Semiconductors Zeftronics Zetex Semiconductors Acquired by Diodes Zilker Labs Acquired by Intersil 19 05 04 03 02 01 00 99 98 97 96 95 94 93 92 91 90 89 88 87 0896 0885 0874 0863 0852 0841 0830 0729 0718 0707 9796 98 97 96 95 94 93 92 91 90 89 88 Power Electronics Corporate Genealogy