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1、请问UC2843AQD8RQ1芯片是否变更了丝印，两种版本丝印如下图所示2、求一份PCN#20211123004.0文件
您好，
确实如您所说，丝印根据PCN发生过变化，上面是新的，下面是旧的。
PCN文件不能在这里公开，您可以到客服中心咨询一下
www.ti.com/.../contact-us.html
