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
################################################################