Is easy-solder resistance wire an oxymoron?

Apr 10, 2012 7 Replies

Title says it all: I'm thinking of making a snubber network with a cap and a low turn-count coil that's hard up against a ground plane, so I get series R, parallel R, and a bit of inductance all in one go.



But it's a no-go if it can't be made from easily found wire and just soldered down in production.



Suggestions?


My liberal friends think I'm a conservative kook. My conservative friends think I'm a liberal kook. Why am I not happy that they have found common ground? Tim Wescott, Communications, Control, Circuits & Software http://www.wescottdesign.com

Constantan solders easily - IIRC about 30 x resistivity of Cu.

Cheers

Syd

If you don't care much about the tempco, just use brass wire. It's pretty high resistivity and easily available.

This is a good suggestion.. for small quantities, just strip some type T or J or E thermocouple wire.. AWG20 solid is quite common. The Constantan is the red (negative) wire with US color codes.

get

Phosphur Bronze has about 7x the resistivity of copper. You can also solder stainless with some 'nasty' fluxes. All kinda 'springy' though.

George H.

Manganin solders pretty well and has a very low tempco.

John Larkin Highland Technology Inc www.highlandtechnology.com jlarkin at highlandtechnology dot com Precision electronic instrumentation Picosecond-resolution Digital Delay and Pulse generators Custom timing and laser controllers Photonics and fiberoptic TTL data links VME analog, thermocouple, LVDT, synchro, tachometer Multichannel arbitrary waveform generators

Was that your mother's excuse for you?

You can't have a sense of humor, if you have no sense.

get=20

In some lab cases i brazed the ends of nichrome wire to make solderable tips. Not recommended for production.

?-)

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