Soldering a thermal fuse?
 

Hi All,

Connector heater packed up after falling over whilst on.

After much head scratching I found an O/C thermal fuse.

Ive got a replacement (157 degree), Im planning mechanical fixing with some machine screws and nuts, but was wondering, at that rated temp, would it be possible to solder it? Or would that = another O/C fuse?

TIA

Chris

Soldering a thermal fuse?
 

On 19/01/2020 15:33, wrote:
Hi All,

Connector heater packed up after falling over whilst on.

After much head scratching I found an O/C thermal fuse.

Ive got a replacement (157 degree), Im planning mechanical fixing with some machine screws and nuts, but was wondering, at that rated temp, would it be possible to solder it? Or would that = another O/C fuse?

TIA

Chris


Assuming you have basic soldering skills, you should be OK.

If you are concerned, you could use the 'heat shunt' trick which was
commonly used in the early days of transistors etc. (Early transistors
were more prone to damage while being soldered than modern ones.)

All you need for this is a pair of thin-nose pliers. Just use them to
hold the lead between the solder joint and the main body of the
component while soldering and until the joint cools.

Soldering a thermal fuse?
 

On 19/01/2020 15:33, wrote:
Hi All,

Connector heater packed up after falling over whilst on.

After much head scratching I found an O/C thermal fuse.

Ive got a replacement (157 degree), Im planning mechanical fixing with some machine screws and nuts, but was wondering, at that rated temp, would it be possible to solder it? Or would that = another O/C fuse?

TIA

Chris



I've soldered them on car resistor packs.

When cutting out the old fuse leave 0.25 to 0.5 of the wire. This allows
a mexchanical joint to be made by bending the wire and crimping with a
pair of pliers.
To solder you need a large (high wattage, 50W) and solder quickly

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Soldering a thermal fuse?
 

And if you use the heat sinc idea you can also make the pliers stay on with
elastic bands around the handles. Saves growing another arm and hand.
Brian

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On 19/01/2020 15:33, wrote:
Hi All,

Connector heater packed up after falling over whilst on.

After much head scratching I found an O/C thermal fuse.

I've got a replacement (157 degree), I'm planning mechanical fixing with
some machine screws and nuts, but was wondering, at that rated temp,
would it be possible to solder it? Or would that = another O/C fuse?

TIA

Chris



I've soldered them on car resistor packs.

When cutting out the old fuse leave 0.25 to 0.5 of the wire. This allows a
mexchanical joint to be made by bending the wire and crimping with a pair
of pliers.
To solder you need a large (high wattage, 50W) and solder quickly

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

Soldering a thermal fuse?
 

On 19/01/2020 20:38, Brian Gaff (Sofa 2) wrote:
And if you use the heat sinc idea you can also make the pliers stay on with
elastic bands around the handles. Saves growing another arm and hand.
Brian

Gosh that takes me back. Havn't done that for decades. (Not that I do
much electronics any more).

Soldering a thermal fuse?
 

newshound wrote
Brian Gaff (Sofa 2) wrote

And if you use the heat sinc idea you can also make the pliers stay on
with
elastic bands around the handles. Saves growing another arm and hand.

Gosh that takes me back. Havn't done that for decades.

I use surgical clamps, amazingly cheap now.

I use surgical scissors too, because they are
also amazingly cheap and excellent scissors.

(Not that I do much electronics any more).

Soldering a thermal fuse?
 

On Sun, 19 Jan 2020 15:59:09 +0000, Brian Reay wrote:

Assuming you have basic soldering skills, you should be OK.

If you are concerned, you could use the 'heat shunt' trick which was
commonly used in the early days of transistors etc. (Early transistors
were more prone to damage while being soldered than modern ones.)

I still have an actual (normally closed jaws) heat shunt in my toolbox!

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wish to copy them they can pay me £1 a message.
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On Mon, 20 Jan 2020 09:22:26 +1100, cantankerous trolling geezer Rodent
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FLUSH senile asshole's troll****

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Soldering a thermal fuse?
 

Thanks everyone (well, almost everyone!) for your replies.

The fuses have turned up, as have the 2mm machine screws, but no sign of the nuts. So I might give the heat shunt a try.

Soldering a thermal fuse?
 

So, I was ready to get the sodding iron and pliers out, went to the froiler room to get the thermal fuses and thought €œIll just check the packet the machine screws came in in case the nuts are also in there.......

Yup! All screwed up, tested and working!

About 10 minutes after reading your replies earlier, I thought, I remember dad* telling me about holding stuff with pliers to keep the heat away from the components. Just the other day when I was about 8.

*His soldering iron was a six inch piece of 1/2 inch copper pipe hammered flat at the end. With an old file shoved in the other end for a handle. He used to heat it on a gas ring.

Soldering a thermal fuse?
 

On Tuesday, 21 January 2020 20:36:42 UTC, wrote:
So, I was ready to get the sodding iron and pliers out, went to the froiler room to get the thermal fuses and thought €œIll just check the packet the machine screws came in in case the nuts are also in there.......

Yup! All screwed up, tested and working!

About 10 minutes after reading your replies earlier, I thought, I remember dad* telling me about holding stuff with pliers to keep the heat away from the components. Just the other day when I was about 8.

*His soldering iron was a six inch piece of 1/2 inch copper pipe hammered flat at the end. With an old file shoved in the other end for a handle. He used to heat it on a gas ring.

In those days you could buy a house for the amount it cost me to buy a round of drinks in london (slight exaggeration)

Soldering a thermal fuse?
 

In article ,
wrote:
Hi All,

Connector heater packed up after falling over whilst on.

After much head scratching I found an O/C thermal fuse.

I‘ve got a replacement (157 degree), I‘m planning mechanical fixing with
some machine screws and nuts, but was wondering, at that rated temp,
would it be possible to solder it? Or would that = another O/C fuse?

They're generally wire ended? Use a heatsink between wire and fuse before
soldering. Like you once did with transistors. ;-)

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