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 --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------