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https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1584666/iso7741-confirm-roughened-leadframe-not-oxidation-iso7741fqdwrq1
器件型号： ISO7741
你好 Jun Li、
是的、这种外观对于粗糙的引线框来说是正常的。
如果您怀疑此器件有问题、请确认您已从 TI.com 或经批准的供应商购买此器件。 有关更多详细信息、请参阅反假冒|质量政策与程序和供应商列表。
此致、 Andrew
