Weeks 43 & 44 Report

Inspection Accept

55%

Electrical Testing Pass

82%

Weeks 43 & 44 Summary                                                                                                          

In Week 43, Electrical Testing yields jumped to 100% after dropping to 79% in Week 42, and then again fell all the way to 64% in Week 44, averaging 82% for the period.

There were nine lots with higher than a 5% failure rate, three of which were 100%.

Inspection yields edged up to 70% in Week 43 from Week 42's 69%, before plummeting down to 40% in Week 44, averaging 55% for the period.

FGB30N6S failure for high Gate-to-Emitter on-state Voltage

Fairchild FDD6670A (Date Code nor marked or labeled) - 38% Failure Rate

Littlefuse SP0505BAHTG (Date Code not marked or labeled) - 100% Failure Rate - Hi

 gh Vr.   

Toshiba TMP68HC11A1T (Date Code 0540) - 8% Failure Rate - Short pins and bad protective diodes.

STMicroelectronics STP80NF70 (Date codes 238, 328, and 337) - 33% Failure Rate - Failed of high breakdown.

Fairchild FGB30N6S2D (Date code not marked or labeled) - 100% failure rate - High Vgs(th).

Texas Instruments TMS320C50PQA57 (Date code not marked or labeled) - 15% failure rate - open and shorted pins and bad protective diodes.

On Semiconductor MBRS540T3G (Date Code not marked or labeled) - 100% failure rate - High Vf.

STMicroelectronics ST72T141K2M6 (Date Code not marked or labeled) - 22% failure rate - failed loading program.