PAGE 1 OF 6 ATMEL CORPORATION Tel:(408)441-0311 Fax:(408)436-4200 AT-27BV256 EPROM RELIABILITY DATA - 125°C OPERATING LIFE TEST (PLASTIC) - 150°C RETENTION BAKE (PLASTIC) - 15 PSIG PRESSURE POT - EXTENDED TEMPERATURE CYCLING - EXTENDED THERMAL SHOCK * This report was generated from AT-27BV256 reliability testing. This data is applicable to the following device types due to same technology grouping as defined in MIL-M-38535 Appendix A: AT-27BV010 AT-27BV020 JULY 2003 2325 Orchard Parkway San Jose CA. 95131 PAGE 2 OF 6 AT-27BV256 PLASTIC PACKAGE 125°C DYNAMIC OPERATING LIFE TEST LOT NUMBER DATE CODE 5B1402 5B9552 240 240.0 0 7D3024B 7D9813 250 250.0 0 8B1150 8B9825 SAMPLE SIZE 250 TOTAL CKT-HRS(K) 250.0 NUMBER OF FAILURES 0 FAILURE RATE TOTAL DEVICE HOURS BEST ESTIMATE 740,000 DEVICE HOURS λ 50°C AMBIENT λ CONFIDENCE ESTIMATE λ λ = 0.09% PER 1000 HOURS EXTRAPOLATION TO 50°C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF O.5eV = 0.003% PER 1,000 HOURS (32 FITS) 60 = 0.004% PER 1000 HOURS 60% CONFIDENCE (42 FITS) 90 = 0.01% PER 1000 HOURS 90% CONFIDENCE (105 FITS) PAGE 3 OF 6 AT-27BV256 PLASTIC PACKAGE 150°C RETENTION BAKE LOT NUMBER DATE CODE SAMPLE SIZE HOURS TO FAILURES 168 500 1000 5B1440 5B9552 273 0 0 0 7D3024B 7D9813 250 0 0 0 8B1150 1C0534 8B9906 1C0149 250 0 0 0 250 0 0 0 FAILURE RATE TOTAL DEVICE HOURS BEST ESTIMATE 1,023,000 DEVICE HOURS λ 50°C AMBIENT λ CONFIDENCE ESTIMATE λ λ = 0.07% PER 1,000 HOURS EXTRAPOLATION TO 50°C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV = 0.001% PER 1,000 HOURS (10 FITS) 60 = 0.001% PER 1,000 HOURS 60% CONFIDENCE (14 FITS) 90 = 0.003% PER 1,000 HOURS 90% CONFIDENCE (32 FITS) PAGE 4 OF 6 AT27BV256 PLASTIC PACKAGE PRESSURE POT TEST DATE CODE PACKAGE TYPE SAMPLE SIZE NUMBER OF FAILURE AT INDICATED HOURS (24 (48) (72) (96) 5B9552 28 TSOP 90 0 0 0 0 5B9552 32 PLCC 122 0 0 0 0 5B9552 32 SOIC 89 0 0 0 0 7D9813 32 PLCC 100 0 0 0 0 7D9815 28 TSOP 100 0 0 0 0 8B9906 32 PLCC 100 0 0 0 0 1C0149 32 PLCC 100 0 0 0 0 PAGE 5 OF 6 AT-27BV256 PLASTIC PACKAGE EXTENDED TEMPERATURE CYCLING -65°C to +150°C PLCC/TSOP/SOIC/PDIP -55°C to +125°C CBGA DATE CODE PACKAGE TYPE SAMPLE SIZE NUMBER OF CYCLES NUMBER OF FAILURES 5B9552 32 PLCC 77 1000 0 5B9552 28 SOIC 77 1000 0 5B9552 28 TSOP 77 1000 0 7D9815 28 TSOP 100 1000 0 7D9813 32 PLCC 8B9906 32 PLCC 100 1000 0 1C0149 32 PLCC 100 1000 0 100 1000 0 PAGE 6 OF 6 AT-27BV256 PLASTIC PACKAGE EXTENDED THERMAL SHOCK -55°C TO +125°C DATE CODE PACKAGE TYPE 5B9552 28 TSOP 5B9552 5A9552 SAMPLE SIZE NUMBER OF CYCLE NUMBER OF FAILURES 77 1000 0 32 PLCC 77 1000 0 28 SOIC 77 1000 0