White Horse Laboratories Week 25 Counterfeit Detection Report
Week 25 saw a welcomed recovery in acceptance rates following inspection, climbing 15 points from Week 24 to 80% in Week 25. Similarly, lot pass rates on electrical testing climbed 11 points to 83% in Week 25 with volumes gaining 14% on the improved yields.
Bear in mind that not all lots go through both inspection analysis and electrical testing – many lots are rejected after inspection and never make it to testing while other lots are tested only depending on the buyer’s requirements.
Inspection: 80% accept Testing: 83% passed
Week 25 Substandard Product Listing
Dallas DS17487-5 (Date Code 1109) – 5% failure – program and verify error.
PME Sierra/Agilent/HP HDMP-1022G (multiple Date Codes including 0821 & 0908) - 15% failure – open and short pins, bad protection diodes.
PMC Sierra/Agilent/HP HDMP-1024G (multiple Date Codes including 0911, 0913, 0923, 0931, 0953 & 9850) – 18% failure – open and short pins, bad protection diodes.
Mitsubishi CM50DY-24H (Lot Numbers E72SK2 & 692AA37) – 45% failure - low collector-emitter voltage, Vces.
IXYS DSEI2X101-06A (Date Code 0603) – 100% failure – high forward voltage, Vf.
Infineon ITS4141N (Date Code 1035) – 52% failure – still active at supply voltage of 7V and very low output voltage at supply voltage of 45V.
STMicroelectronics STD45NF758T4 (Date Code 0943) – 100% failure – low breakdown voltage, BVdss, and high on-state drain resistance, Rds(on).