Solder Problems (PDP-8/m related)

From: Don Maslin <donm_at_cts.com>
Date: Fri Dec 3 15:28:01 1999

On Fri, 3 Dec 1999, Tony Duell wrote:

> > >Be warned that a relatively cold iron can do _more_ thermal damage than a
> > >hot one. _All_ irons are hot, and if you use a colder one you keep it on
> > >too long to complete the connection and thus overheat the component.
> > >
> > >I find a #8 good for almost all work. A #7 is useable, but I don't like
> > >it. #5 or #6 is too cold...
> >
> > You're right. I meant to add that the solder that I'm using is a very
> > low temperature solder with silver in it. 500 or 600 degrees would be too
>
> That silver-loaded solder is great stuff. I have a reel that I use for
> SMD work and for repairs on Tektronix 500 series (which use silver-plated
> ceramic terminal strips). It was expensive, but it lasts a _long_ time.
>
> Another warning. There's a stuff called 'silver solder' used by
> engineers. This is _NOT_ the same stuff at all -- it's high melting point
> (you can use it on small steam engine boilers, etc). I'm not sure it even
> contains silver.
>
> -tony
 
Yes, it does, and it is applied with a torch and water soluble flux.

                                                 - don
 
Received on Fri Dec 03 1999 - 15:28:01 GMT