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XTR110: SO404219

Part Number: XTR110

Tool/software:

I have customer that is having issue:

 

We received an order of 50 boards on PO 502469.  30 on 6/27 and 20 on 6/30.  As we began testing these boards we found a problem with U12 part number XTR110KP.  It is a 4-20mA output device and doesn't pass our test specs.  We replaced the devices on 3 different boards with parts from our stock and all were fixed.  The photo below shows 2 of the bad parts and 1 of our parts in stock that work.  When we discover an issue like this, what is the protocol to get them repaired?  I know you folks don't test the boards, but I don't know the protocol.  Also, we have 50 more boards on order on PO 502589 and we definitely do not want these MFR/Data code parts put into this next batch.  Please let me know how to move forward and thank you.

Per invoice :

Date code 2328+5 

Lot code - 4204835ML4 

Mouser PO - 029-BR180