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Subject:	Re: Solder Designations
From:	Steve Gregory <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, Steve Gregory <[log in to unmask]>
Date:	Fri, 5 Jan 2007 12:43:16 -0600
Content-Type:	text/plain
Parts/Attachments:	text/plain (53 lines)

Hi Gregg!

I've always understood that Sn60A was Sn60/Pb40 solder, Pb36B was
Sn62/Pb36/Ag2 solder, and of course Sn63A is Sn63/Pb37 solder...

Steve Gregory 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gregg A. Owens
Sent: Friday, January 05, 2007 11:29 AM
To: [log in to unmask]
Subject: [TN] Solder Designations

Dear Technetters:
 
I have had a student of mine ask a question which has stumped me, but
should (hopefully) be easy for our metallurgist folks out there. 
 
J-STD-001 3.2 Solder refers to Sn60A, Pb36B and Sn63A. To what specific
solder alloy do these designations apply? I have looked at J-STD-005B to
attempt to find these specific designations (specifically the inclusion
of "A" or "B") but without success. 
 
Any thoughts?
 
Gregg Owens, MIT
Manufacturing Technology Training Center, Inc.
Mira Loma, CA 91752 
 

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