RELIABILITY DATA LTC1555 / LTC1556 8/21/2006 • OPERATING LIFE TEST PACKAGE TYPE SAMPLE SIZE OLDEST DATE CODE SSOP/TSSOP 546 9701 546 • PRESSURE COOKER TEST AT 15 PSIG, +121°C PACKAGE TYPE SAMPLE SIZE SSOP/TSSOP 7,138 7,138 • TEMP CYCLE FROM -65°C to +150°C PACKAGE TYPE SAMPLE SIZE NEWEST DATE CODE 9724 0309 OLDEST DATE CODE NEWEST DATE CODE 7,444 9724 7,444 • THERMAL SHOCK FROM -65°C to +150°C SAMPLE SIZE OLDEST DATE CODE K DEVICE HOURS (1) AT +125°C 0027 OLDEST DATE CODE SSOP/TSSOP PACKAGE TYPE NEWEST DATE CODE 276.34 276.34 K DEVICE HOURS 495.83 495.83 K DEVICE CYCLES 0309 NEWEST DATE CODE 1,364.78 1,364.78 K DEVICE CYCLES SSOP/TSSOP 3,784 9724 0309 3,784 (1) Assumes Activation Energy = 0.7 Electron Volts (2) Failure Rate Equivalent to +55°C, 60% Confidence Level = 42.83 FITS (3) Mean Time Between Failures in Years = 2,663 Note: 1 FIT = 1 Failure in One Billion Hours. Form: 00-03-6209B. R369 957.90 957.90 NUMBER OF (2) FAILURES 0 0 NUMBER OF FAILURES 0 0 NUMBER OF FAILURES 0 0 NUMBER OF FAILURES 0 0 Rev 18