Kathy, I don't have any insight for you, however I am thankful that you shared your 'purchasing' issue. And all along I thought we were the only ones who had a purchasing department that works for the vendor and not for us!! Richard Hamilton Clemar Mfg. / Rain Bird [log in to unmask] > -----Original Message----- > From: Kathy Palumbo [SMTP:[log in to unmask]] > Sent: Wednesday, July 28, 1999 10:12 AM > To: [log in to unmask] > Subject: [TN] Dewetting Issues > > Currently we are experiencing a lot dewetting issues on our HASL coated > boards. When tested in house they failed IPC solderability testing, and > when tested at two outside independent labs they failed solderability > testing at both labs. The problem we are having is our purchasing > department still thinks we are full of it and will not support us in > returning the boards to the board house, and naturally the board house is > taking our purchasing departments side and will not take the boards back > now. > > Both our purchasing department and the board house are claiming "there is > no > long term reliablity issues with dewetting". Naturally my M.E. and Q.E. > group disagree with their statement. > > What I am looking for is long term reliability studies regarding dewetting > on typical HASL coated FR4 PCB material. Does anyone out there know of > any > such studies, or can you steer me in the right direction? > > Thanks for you help in advance! > > Sincerely, > Kathy Palumbo > > ############################################################## > TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c > ############################################################## > To subscribe/unsubscribe, send a message to [log in to unmask] with > following text in > the body: > To subscribe: SUBSCRIBE TECHNET <your full name> > To unsubscribe: SIGNOFF TECHNET > ############################################################## > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for > additional > information. > If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################