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Subject:	Re: Lead-Free Alloys
From:	Tracy Black <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Thu, 8 Apr 1999 13:23:50 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (48 lines)

Andy:

The potential for this would depend on some specifics.  However, generically depending on the mixture ratio
of tin/zinc one alloy that I have seen used was a 91Sn9Zn.  This piticular mix has 14 deg. F higher melting
temperature and has (although I do not believe that you need it) a higher tinsel strength.

TBlack
Microwave Engineering

Andy Mackie wrote:

> Does anyone have any experience with tin/zinc alloys? I heard that Toshiba
> has done some work with these, and I'd love to know if it's a viable
> lead-free alternative for electronics assembly, and what the drawbacks are.
>
> Thanks!
>
> Andy Mackie, PhD (Chairman - IPC Solder Paste Task Group)
> Praxair Inc.
> 777 Old Saw Mill River Road
> Tarrytown
> NY 10591
> Ph: 914-345-6402
> Fx: 914-345-6405
>
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