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请问为什么 PIN发黄，上锡NG（出现蜂窝状）
您好，您在哪儿购买的？如果是通过TI estore购买的就没问题。
因为有些器件从原来的非粗化引线框架改为单面粗线化引线框架，这种技术的改进是为了提供更好的焊接附着力，所以这些器件看起来发黄像是被腐蚀掉了。
您参考下面的FAQ：
https://e2e.ti.com/support/logic-group/logic/f/logic-forum/718449/faq-why-do-the-leadframes-look-strongly-oxidized-or-corroded
