Week 50 Quality Report



White Horse Laboratories has been publishing our Weekly Quality Reports since 2009, which are a listing of the devices that have had over 5% lot failure in electrical testing or the buyer has rejected the lot following results of inspection methods

While this list does not imply that the balance of devices within a lot are defective, and is not exhaustive (for example, a 5% failure rate may be too high or some buyers may accept devices in a physical condition that others would not), it is intended to an indicator as to what is going on in the market and is a reminder to be aware of the risks of sourcing without adequate quality control measures in place.

Week 50

Inspection Accept 

90%

 

Electrical Testing Pass

71%

This Week in The Lab...
Week 50 Substandard Parts List
New Laboratory Address
MLCC Service Profile
Substandard Parts Archive
     
                                   
White Horse Laboratories' Quality Report
Week 50 Quality Report
Substandard Parts List
                           
Altera Corporation EP2S60F1020I4N (Date Code 1427) - 27% Failure Rate -  Program error that the VCCINT,VCCIO shorted to GND.
 
Vishay BY203-20STAP (Date Code not marked or labeled) - 50% Failure Rate - The Ir was more than 100uA with 2000V reverse voltage, the Vbr was less than 2000V.
 
Infineon Technologies SAB-C167CR-LM-HA+ (Date Code 1433) - 100% Failure Rate -  Open pins (pin71) and broken protective diode(pin84).
  
Texas instruments TMS320F243PGEA (Date Code not marked or labeled) - 21% Failure Rate  - Short pins.
  
Infineon Technologies BTS410E2 E3043 (Date Code not marked or labeled) - 6% Failure Rate -  Low output.
  
Burr-Brown Corporation ADS7844N/1K (Date Code not marked or labeled) - 6% Failure Rate - Failed testing with typical readings of 0x4A9 at Full-Scale (5V input).
  
 
  
Vishay BY203-20STAP Failure - Ir was more than 100uA with 2000V reverse voltage, the Vbr was less than 2000V.
Notification of Lab Address Change
New Laboratory Address
  
Since the Government has taken over the Buildings in Guo Hong Industrial Park, we moved to a new facility. Our new address is below. We have been operational in the new lab on Monday, December 14, 2015.
  
4A Technology Building H
Gang Zhi Long Science Park
Heping East Road
Longhua New District, Shenzhen
People's Republic of China, 518109
 
深圳市龙华新区龙华街道和平东路港之龙科技园科技大厦H栋4楼A区
 
Please do not send parts to the old address. If a shipment has already been made, have no fear, all couriers have been notified of the new address, and it's only a block away so there will be no impact on delivery time. Thank you!
MLCC Authenticity Verification Service Profile
MLCC (Multilayer Chip Capacitor)

  
Purchasing passive discrete devices such as capacitors, resistors, and inductors can be challenging. It is more challenging to verify authentic product that does not have a die. They seem to work okay, but are they real?
  
White Horse Laboratories has been developing new test and inspection protocols for passive devices through extensive internal experimentation and analysis. The first such solution we are presenting is for Multilayer Chip Capacitors (MLCC). This MLCC profilegoes beyond external visual inspection (EVI) and testing basic capacitance and into how the device is constructed. The capacitance is what makes it a capacitor, the manufacturing is what makes a specific MLCC unique.

This MLCC testing profile includes:
  • Packaging & Documentation Inspection
  • External Visual Inspection (EVI)
  • XRF Material Analysis
  • Parametric electrical testing at ambient and min/max operating temperature range
  • Cross-section
  • Statistical analysis of test data
A solution was needed, and we have provided just that. Just let me know if you have any questions and/or the next time you are considering to purchase MLCC.
 
Weekly Report Archives
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Substandard Parts Lists dating back to 2009


White Horse has been publishing Weekly Quality Reports since 2009. Now we open those archives to you.

 

Simply click on the Weekly Quality Report page on our website and then click the "View our Archive" button to see each posting from 2009 thru 2015.


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

 

All the best,

Mark A. Rinehart
White Horse Laboratories
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.