[Boatanchors] Solder

[W2HX]

I also think one of the benefits of eutectic is that the melting point is very specific, not a range of temperatures where it might melt/solidify. So there is less chance a wire/component lead will move when cooling to help prevent cold joints.

 
73 Eugene W2HX
 


-----Original Message-----
From: Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of D C _Mac_ Macdonald
Sent: Sunday, May 10, 2015 3:48 PM
To: K5UJ Bob Atkinson
Cc: boatanchors at mailman.qth.net; krkaplan at cox.net
Subject: Re: [Boatanchors] Solder

63/37 is "eutectic" solder.  That means it melts at the lowest possible temperature with those two components. 
 
It matters if you are on circuit boards and with highly heat sensitive components. 
  
* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* k2gkk hotmail com *
* Oklahoma City, OK *
* USAF & FAA (Ret.) *
* * * * * * * * * * * 
 

 
> Date: Sun, 10 May 2015 14:36:44 -0500
> From: ranchorobbo at gmail.com
> To: peterl at standingwave.org
> CC: boatanchors at mailman.qth.net; krkaplan at cox.net
> Subject: Re: [Boatanchors] Solder
> 
> I'm having trouble understanding how 3% can matter.
> 
> Rob
> K5UJ
> >>
> >> I think you will ultimately be happiest with 63/37 rosin core in 
> >> the diameter of your choice ( I use .030"). I gave up on 60/40 
> >> years ago
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