Hi,I recently had 100 MCPCB's made that had Vishay 15V zener P.no. BZG03C15 on board. The zener is passing 25mA and does not even get warm to touch, yet the voltage across them is 15.6V or more. According to the data sheet, 15.6V is the tolerance maximum with a test current of 50mA, I'm only passing half that. As such my boards, which cost me $3500 are scrap. What recourse is available to consumers when components are supplied out of tolerance?Cheers.
You can buy 0.1% references.. but they're dear
Did your BOM specify the manufacturer and distributor? We require that for all boards we build where we buy the components. Paul
A 15volt TVS diode, as you have used, is made to NOT conduct at the rated 15volt.