Re-insulating fine wire connections
Re-insulating fine wire connections
(OP)
I am doing some research work on that involves soldering insulated fine wire (above 30 AWG) to fine pitch SMD and othre components so that I have small sensor with flying leads. The reason for this is so that I can put component on end of thin tube to make a probe type instrument.
After soldering I need to re insulate connections with a conformal coating that would be thin and tough enough to allow some flexing and not increase volume of probe end.
Can you recommend compound easy to apply and quick drying.
Working environment normal room temp. no harsh chemicals, dry.
Voltages: less than 24V
After soldering I need to re insulate connections with a conformal coating that would be thin and tough enough to allow some flexing and not increase volume of probe end.
Can you recommend compound easy to apply and quick drying.
Working environment normal room temp. no harsh chemicals, dry.
Voltages: less than 24V





RE: Re-insulating fine wire connections
Polyurethane is also good.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Re-insulating fine wire connections
RE: Re-insulating fine wire connections
Dan - Owner

http://www.Hi-TecDesigns.com
RE: Re-insulating fine wire connections
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If we learn from our mistakes I'm getting a great education!
RE: Re-insulating fine wire connections
In your case, though I would be tempted to do the following:
1) use heat stripable insulated wire
2) after the solder connections are done, either pot the local area with 5 minute epoxy, or use the above Insulating Coating. This is to protect the solder joint (weak point) from failing.
3) If there are any long lead lengths, I would use a small dab of non-acetic acid cure RTV (the type they use in fish tanks) every 0.5" along the wire(s) length, to bond it to whatever "housing" you have. This will keep the wires from flexing under vibration and breaking due to mechanical resonance.
After that, you should be able to handle 20G of vibration without trouble.
www.MaguffinMicrowave.com
Maguffin Microwave wireless design consulting