Week 49 Report

Inspection Accept

50%

Electrical Testing Pass

68.8%

Weeks 49 Summary                                                                                                          

Inspection yields continued their downward trajectory again in Week 49, reaching a low of 50%, falling another 10% from Week 48's 60%. The 50% is one of the lowest yields of 2012.

Electrical testing yields ricocheted from 60.9% in Week 48 to 68.8% in Week 49. Electrical failures range from opens caused by electrical overstress during prior use or salvaging on refurbished devices to parametric failures.

XC4005E-4PQ100I JTAG Test Schematic

Substandard Part Listing 

ON Semiconductor NTD25P03LT4G (Date Code 0230) - 100% Failure Rate - High Rds(on).

Analog Devices AD7685CRMZ (Date Code not marked or labeled) - 100% Failure Rate - Incorrect digital output.

Xilinx XC4005E4PQ100I (Date Code 0717) - 100% Failure Rate - Bitstream data would not load via PROM and JTAG.

Cypress Semiconductor VIC068A-BC (Date Code not marked or labeled) - 10.3% Failure Rate - Open/short pins and bad protection diodes.

Vishay 594D337X9016R2T (Date Code not marked or labeled ) - 8.51% Failure Rate - High breakdown of direct current leakage (DCL).