Heat-sink the resistor?

 ...


On 1/16/18, Bob Blick <bobblick@outlook.com> wrote:
> What techniques are most effective in keeping power resistors from
> desoldering themselves from PC boards? I'm thinking there are basically
> three methods:
>
> 1. Don't use them at anywhere near their rated power. That's fine except =
if
> you need to tolerate the occasional overload condition.
>
> 2. Pour extra copper on and around the pads.
>
> 3. Use as much length of the wire leads as possible. That could really
> decrease the rigidity of the mounting.
>
> 4. ??
>
> Attached is a picture of the temperature chart. I'm using the 5 watt AC05=
..
> Note the 260 degree K rise at rated power.
>
> If I fold or clinch the leads it will keep the resistor from falling out,
> but the solder is going to melt. I imagine that won't give the greatest
> electrical connection :)
>
> Datasheet here:
>
> http://www.vishay.com/docs/28730/acac-at.pdf
>
> Thanks,
>
> Bob
--=20
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