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April 2000

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Subject:
From:
"Dieselberg, Ron" <[log in to unmask]>
Date:
Wed, 26 Apr 2000 06:40:10 -0400
MIME-Version:
1.0
X-To:
Lon Weffers <[log in to unmask]>
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, "Dieselberg, Ron" <[log in to unmask]>
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Lon, EUTECTIC refers to an alloy, usually tin/lead, where the melting point
of the alloy is below the melting point of either of the two original
metals. Secondly a eutectic solder alloy has no pasty range, it turns from a
solid to a liquid or liquid to solid without going through a pasty stage as
most other alloys do. There are several eutectic solder alloys i.e..
Sn63/Pb37, Sn 62, Sn96 etc. Refer to J-STD-006 Appendix A. Any solder where
the "Liq" and "Sol" temperatures are the same (indicated by "e" in the "Liq"
column)is said to be a eutectic alloy.
Hope this helps.
Ron Dieselberg
BAE SYSTEMS
Cincinnati Electronics Corp.

-----Original Message-----
From: Lon Weffers [mailto:[log in to unmask]]
Sent: Tuesday, April 25, 2000 15:24
To: [log in to unmask]
Subject: [TN] eutectic


Dear friends,

It might seem a stupid question, but what does Eutectic mean when they talk
about eutectic soldertemperature?

Thanks in advance
Lon weffers

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