Process Controls
Transcription
Process Controls
HERMETICS (Metal Can) Process Capabilities WAFER SAW & WASH • Capabilities up to 8 inch wafer and 3 mils thick wafer • Wafer Saw DAD 341 and Ultratech 603 Cleaner • With CO2 Re-ionizer to maintain water resistivity of 0.1 to 1 Meg-ohm • 100% saw through and partial cut DIE DEMOUNTER • Manually operated using Viking equipment – mostly being used for big die sizes • Manual die plating process using butyrate plastic sheet for smaller die sizes • Viking 1010B Process Controls • Kerf width measurement • Visual inspection DIE ATTACH • Eutectic Attach - ESEC 2003 semi-auto attach process (forming gas N2/H2) • Eutectic Attach - Manual using tunnel die attach (forming gas N2/H2) • Au/Si (380°C to 420°C); Au/Sn (320°C to 340°C) • Epoxy Attach - AMI 3200 auto machine • Epoxy Attach - Manual process using dispenser I & J fisnar and AD3000 • Epoxy Cure - 170°C to 180°C @ 1hr Process Controls • Die Shear Test – max 5kg • Die Punch Test – 90% silicon remaining • Die Flick Test – 75% silicon remaining and no more than 75% voids DIE SHEAR TEST WIREBOND • Ultrasonic bonding • M20 manual - capable for heavy wires (5.0 to 15 mils aluminum wire 99.99%). • ASM509 and ASM559 automatic bonders capable for fine wires (1.0 mil to 2.0 mils aluminum wire 99.99%) • KNS1470 semi-auto bonder - capable for fine wires (1.0 mil to 2.0 mils aluminum wire 99.99%) • KNS484 manual bonders - capable for fine wires (1.0 mils to 4.0 mils aluminum wire 99.99%) Process Controls • Wire Pull Test WIRE PULL TESTER SEAL • Sealers for hermetic packages with excellent hermeticity. • Taylor & Windfield, Polaris 150 or 13 Process Controls • • • • • Fine & Gross Leak Crimp Test Electrode imprint Moisture Level - 50 PPM max Oxygen Level - 500 PPM max FINE LEAK GROSS LEAK MARKING • Transfer Ink marking (black ink – single part) • Markplate developer (AGFA Repromaster, Markem 452E / 452W) • Markem 300T / Markem U-1131 marking using mark plate and ink Process Controls • Mark permanency test for ink type process • 100% visual inspection STABILIZATION BAKE (Blue M-Oven) • 883 condition C: 150°C to 155°C @ 24hrs • 883 condition D: 200°C to 205°C @ 24 hrs TEMPERATURE CYCLE (Ransco) • Military: No. of Cycles: 10 cycles Cold Temp: -65°C to -75°C Hot Temp: 150°C to 165°C TEMPERATURE CYCLE • Commercial: No. of Cycles: 5 cycles Cold Temp: -55°C to -75°C Hot Temp: 150°C to 165°C CENTRIFUGE (Triotech) • Stress Level: 20,000 to 30,000 CENTRIFUGE LEAD FINISH • Manual pneumatic system solder dip • Solder Dip: Pb (63Sn/37Pb) and Pbfree (96.5Sn/3.0Ag/0.5Cu) Solder Alloy; Flux water soluble Process Controls • Solderability Test FINE LEAK (Alcatel Helium) • 100% Fine leak test • Helium purity: 95% GROSS LEAK (Triotech / Binks) • 100% Gross leak test • Galden FINE LEAK PACK • Pack in box, tube or styrofor GROSS LEAK