Hi,
Does anybody know the definition of "discoloration" on PCB gold fingers?
How discoloration is discoloration? IPC standard does not define clearly.

Also, how to determine if the discoloration on gold fingers will affect the
interconnection and create contact problem? All prodcut with discoloration
gold fingers were tested on system without creating any issue but customer
still complains.

Thank you for any input.

YH Shiau

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