I do agree it can be difficult but I have to ask the question why?

If you are purchasing PCBs you specify what finish you want.

If your customer is supplying PCBs for you to assembly you should know
what he is procuring for you or you should give him advice on which is
the best choice.

If both finishes are processed correctly buy the supplier they will both
solder, one better than the other!!!!

Bob Willis
2 Fourth Ave, Chelmsford,
Essex, CM1 4HA, England
Tel: 01245 351502
Fax: 01245 496123
Mobile: 07860 775858
Email: [log in to unmask]
Web: www.leadfreesoldering.com
Web: www.bobwillis.co.uk


-----Original Message-----
From: Leadfree [mailto:[log in to unmask]] On Behalf Of Pratap Singh
Sent: 09 September 2004 15:40
To: [log in to unmask]
Subject: [LF] Tin and Silver Plating on PCB

Technetters,

It is hard to distinguish visually a tin plated PCB vs a silver plated
PCB. Do you know some process that can be implemented at incoming
inspection to separate these two platings. In general silver plated PCB
is a bit brighter than tin plated PCB. Any help is appreciated.


_____________________
pratap singh
Tel./Fax: (512) 255-6820
email: [log in to unmask]
www.rampinc.com

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-------------------------------------------------------------------------------Leadfee Mail List provided as a 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 Leadfree
To temporarily stop/(start) delivery of Leadree for vacation breaks send: SET Leadfree NOMAIL/(MAIL)
Search previous postings at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
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