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Re: [TowerTalk] DIN Connectors You Can't Solder To

To: "Martin Ewing - AA6E" <aa6e@ewing.homedns.org>
Subject: Re: [TowerTalk] DIN Connectors You Can't Solder To
From: "Rick Karlquist" <richard@karlquist.com>
Reply-to: richard@karlquist.com
Date: Sat, 17 Nov 2007 16:37:24 -0800 (PST)
List-post: <mailto:towertalk@contesting.com>
Here is what they do with ROHS stuff at the shop where I work:
Apply RA liquid flux, and then get a blob of 63/37 solder
on the tip of the iron.  Touch this to the pin
just long enough to get it tinned.  Now it will
solder easily.

Rick N6RK




Martin Ewing - AA6E wrote:
> "Reduction of Hazardous Substances" (RoHS) is a European initiative
> which requires manufacturers to use non-lead-bearing solder for
> commercial electronics devices, among other practices.  You have to
> follow these rules if you want to sell in EU -- in practice, the world
> electronics business is following suit.
>
> See
> http://en.wikipedia.org/wiki/Restriction_of_Hazardous_Substances_Directive
>
> The rules don't apply to hobbyists, but most of the stuff we will buy
> will be RoHS compliant.  In practice, this means that soldering is
> trickier because you have to use higher temperature solders.
>
> On the other hand, we might all preserve our mental faculties a little
> longer! (One of the symptoms of Pb poisoning is reduced IQ.)
>
> 73 Martin AA6E
>
> David Robbins K1TTT wrote:
>> First, what is RoHS???
>>
>> Most likely they are plated with chrome.  I would take some fine
>> sandpaper
>> and scratch the plating of the top of the pins, that at least gives a
>> little
>> area to tack onto.  If the pins have a hollow on the back like most of
>> them
>> find a drill or jeweler's file that fits in there and scrape out the
>> plating
>> also.  This also works for chrome plated pl-259's since most all of
>> these
>> types of things are just plated brass.
>>
>> David Robbins K1TTT
>> e-mail: mailto:k1ttt@arrl.net
>> web: http://www.k1ttt.net
>> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>>
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