Customer Zhejiang Lancoo feedback that they receive LM2587SX-ADJ/NOPB 1000PCS, batch number: 1058381EM1, DC: 2108+5. During the process of using this batch of regulator tubes, it was found that the color of the device pins changed from silver to gold (pls find below) The device pins shows Gold is 3PCS,2 PCS output fuction abnormal,1PCS bruned.
Pls help to check why the device pin color change from silver to gold.
(艾睿)TI LM2587SX-ADJ稳压管异常反馈联络函(20220609).pdf