Ken, OSP coated boards are tested electrically before the coating is applied by fab houses. The coating is applied at last fabrication process step just before packaging and shipping. Matthew Norsat International Inc. >>> Ken Patel <[log in to unmask]> January 6, 1999 9:31 am >>> Meaning OSP bare boards are not being tested before shipment to customer by fab house? Can anyone explain this? I am currently going through proto run and would like to more about OSP. re, Ken Patel At 04:08 PM 1/5/99 -0600, Seth Goodman wrote: >In looking for alternatives to HASL finished boards, several suppliers have >mentioned immersion white tin. Since it is a conductive surface, whereas >OSP is not, the finished board can be electrically tested. My question >concerns tin whisker growth. Is this a problem for a chemically deposited >finish like this, or does this only occur with electroplated tin finishes? > >What kind of experiences or opinions do folks have concerning immersion >white tin compared to OSP and immersion gold over nickel? > >Seth Goodman >Goodman & Associates >7687 Leta Way >Verona, WI 53593 >Tel (608)833-9933 >Fax (608)833-9966 > >################################################################ >TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. >For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 >################################################################ > > > ______________________________________________________ Ken Patel Phone: (408) 490-6804 1708 McCarthy Blvd. Fax: (408) 490-6859 Milpitas, CA 95035 Beeper: (888) 769-1808 ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################