Is the watermark on the back of the chip normal? Is it a process problem or a quality problem? Will it affect the use of the machine?

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Is the watermark on the back of the chip normal? Is it a process problem or a quality problem? Will it affect the use of the machine?

HI
应该是有一些影响的,看起来像是被氧化了。
请问是真空包装吗? 异常比率多少? 购买渠道是哪里(是否直接向TI购买)?
Hi
建议直接找TI购买。
不是氧化,有确认黑色物质是什么吗?污渍吗?
能否确认是否影响焊接?