White Horse Laboratories’ Week 18 Counterfeit Detection Report
67% Accept 80% Pass
Week 18 saw another climb in functional performance with lot acceptance climbing to 80% from 73% in Week 17. Physical inspection results dipped to 67% in Week 18 from 70% in Week 17. The first week of May saw significant volume at $230,332.00 in purchase value.
Despite quite high volumes in Japanese product, failures were limited to the one lot of Toshiba TMPN3120FE5MG(I) devices.
An interesting one to look at is the Epson/Crystal devices, SPG8640BN. The SPG8640xx-series has different suffixes specifying different output frequencies.
Devices with different output frequencies had been remarked to the “BN” suffix, but electrical testing identified the different output frequencies, from the “AN” and “CN” suffixes, and even some devices with no output frequency (most likely damage from prior use or in handling when remarking). This is a classic example of remarking.
Week 18 Substandard Product Listing
PMC Sierra/Agilent HDMP-1022G/HDMP-1022 (Date Codes 0029 & 0109) -
13% failure – open pins and bad protection diodes.
PMC Sierra/Agilent HDMP-1024G (Date Codes 0105 & 0719) – 17% failure – open pins and bad protective diodes.
Intersil DG509AAK (Date Code 0235) – 14% failure – on-resistance higher than 1KOhms and wrong switching state.
Epson/Crystal SPG8640BN (Date Code 0438) – 82% failure – 67% with output frequency of 153.6KHz (“CN” suffix), 9.5% with output frequency of 120KHz (“AN” suffix), and 5.5% with no output signal.
Toshiba TMPN3120FE5MG(I) (Date Code 0909) – 62% failure – open pins and bad protection diodes.