We have an issue with EN6337QI / ALC3-1AB408490003.
Please see attached the report with the failure description.
More information below:
Starting 1st of June up to 23rd July as monitoring period, from 344 we have 14 pcs related to this component issue.
This would mean 4.07% Failure Rate
Symptom: Card Failure Infrastructure at -5°C
Card is working properly at 25°C, but at climatic cycling (-5°C), component crashes.
At climatic cycle (-5°C),, where we are rebooting the cards, card doesn’t work no more.
Placement of the component is 3 on the board, it always fails on the same 1/3
According with the electrical scheme, we measured the resistivity between the resistor in connection with and ground, with a multimeter.
After replacing the defective component, result was always pass
Yes, the process is split:
- FCT (Functional Testing) – working properly
- FST (System Climatic Testing)
6. Did they violate solder re-flow temperature profiles, moisture sensitivity? Please provide the re-flow temperature profiles.
We performed XRay on the component mounted on SSY level to check if any soldering issue might have caused internal short of the component
No trace identified as risk of might have caused this behaviour
Impossible as the component present already internal shorts
Thank you and Best Regards,