Thanks to all of you for the continuing information and discussion on this subject. I have requested a precise, technical specification of the gold finish from our supplier so that we can make intelligent use of all the thoughtful and relevant information being provided by you. Thanks again. > -----Original Message----- > From: Chafin, Ken G. > Sent: Monday, August 20, 2001 2:31 PM > To: [log in to unmask] > Subject: Solder vs Gold Pads on SMT > > We presently use SMT printed wiring boards with 60/40 tin-lead solder > finish on the pads. > > Our PWB supplier has offered to supply our boards with a 30 micron > electroless gold finish on the pads at the same price. > > Does anyone have any views on the relative merits of the two finishes? > Solderability? Durability? Reliability? > > We manufacture electronic control and signaling systems for the rail and > rapid transit industry and our equipment is often in harsh environments. > > Thanks for any information on the subject. --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------