Week 20 Report

Inspection Accept

62%

Electrical Testing Pass

73%

This Week in The Lab...

Week 20 Summary

Substandard Part Listing

White Horse Laboratories' Quality Report

Week 20 Summary

Electrical Testing yields continued their pattern of stabilization while Inspection yields made a comeback in Week 20.

Testing yields once again checked in at 73% in Week 20 and have been relatively stable at 70-75% for the past seven weeks.

Inspection yields bounced back from a dreadful 48% in Week 19 to post a 14-point improvement and reached 62% in Week 20.

There were nine part numbers with electrical failure rates of over 5% on the list this week, two of which had a 100% failure rate and one at 92%.

Holiday Announcement - Dragon Boat Festival (Monday, June 2)

The festival commemorates the death of the poet and minister Qu Yuan of the ancient state of Chu during the Warring States period of the Zhou Dynasty. The Chu king made an alliance with the powerful state of Qin, to which Qu was great opposed as he felt the Qin were not to be trusted in their thirst to dominate all of China. For this Qu was banished, and even accused of treason.

Twenty-eight years later, Qin captured Ying, the Chu capital. In despair, Qu Yuan committed suicide by drowning himself in the Miluo River.

It is said that people raced out in their boats to save him, and this is said to have been the origin of dragon boat races. The dragon boat races are now held around the globe, and particularly in China, Hong Kong, and countries with a strong Chinese community.

When Qu's body could not be found, balls of sticky rice were dropped into the river so that the fish would eat them instead of Qu Yuan's body. This is said to be the origin of zongzi (sticky rice wrapped in banana leaf).

White Horse's Hong Kong and China operations will be closed on Monday, June 2nd, and will resume standard operations on Tuesday, June 3.

Week 20 Quality Report

Substandard Part Listing

Motorola MC34014P (Multiple date codes) - 6% Failure Rate - Broken protective diodes.

Xilinx XC9536-15VQG44I (Date Code 1309) - 15% Failure Rate - Program error.

Micron Technology M29W320EB70N6E (Date Code Multiple date codes) - 8% Failure Rate - Program, program verify (read back) and ID errors.

Semtech HMC1020LP4E (Date Code not marked or labeled) - 92% Failure Rate - Opens and shorts.

International Rectifier IR2235SPBF (Date Code not marked or labeled) - 8% Failure Rate - Low output response.

Xilinx XC2S600E-6FGG456C (Date Code 1237) - 8% Failure Rate - Program error and no outputs.

Analog Devices AD7328BRUZ-REEL7 (Date Code 0414) - 100% Failure Rate - Bad protection diodes.

PHILIPS [NXP Semiconductors] SAA7111AHZ (Date Code 0913) - 6% Failure Rate - Open, short pins and broken protective diodes.

Avago Technologies HCPL-7800A-000E (Date Code 1320) - 100% Failure Rate - Gain of only 7.40 to 7.78.

Avago HCPL-7800A-000E - 100% failure for low gain (7.4-7.78)

Notes:

1. Statistics are calculated as a percentage of all lots dis-positioned within the given time period.

2. "Accept" is defined as customer acceptance of report device condition.

3. "Pass" is defined as meeting electrical parameters defined by the agreed upon test plan.

We hope you find this report informative and usefull for your organization.

All the best,

Mark A. Rinehart
White Horse Laboratories