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removing solder from a 0.015" hole

#23537

removing solder from a 0.015" hole | 26 February, 2003

I'm trying to solder a 0.011" lead into a 0.015" +/-0.003" hole. Stop laughing please. This is normally possible with difficulty, except if the lead is removed and the attempt is made to re-install a lead. Anyone have thoughts on how to remove nearly all solder from a 0.015" +/-0.003" plated hole and reinstall a 0.011" lead into a 0.092" thick PCB. I think this is impossible with normal de-soldering techniques. Is drilling or other mechanical removal techniques an option? I know this is not a DFM friendly design, but I may be stuck with it for now.

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RDR

#23538

removing solder from a 0.015 | 26 February, 2003

We use itty bitty drill bits in these cases. You can get one from your PCB supplier. Be careful they break easy.

Russ

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#23539

removing solder from a 0.015 | 26 February, 2003

Try this: * Lay the board onto a solder pot with the via in question on the heat. * Push the wire into the via. * Step back and pat yourself on the back.

Since you probably have components in the area of the via that you don't want to cook, try a variant of the above by using a soldering iron in-place of the pot.

Finally, bag cleaning the solder from the via and just solder the wire to the via pad and drop a dollop of indutrial strength epoxy to secure the wire.

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MA/NY DDave

#23566

removing solder from a 0.015 | 28 February, 2003

Hi

Wow, Sounds like a neat problem.

As an other idea try inserting the largest wire you can get in the hole and heating the free end to wick solder up the wire away from the hole.

I probably like the solder pot with a small nozzle the best so it heats the entire hole and creates wetting while you insert the next wire.

Other ideas, Yet Hey you have the fun.

YiEng MA/NY DDave

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