Problem detected with the Non-Slip Probe Tips

RE: Problem detected with the Non-Slip Probe Tips

snidhi — Mon, 13 Aug 2018 10:10:20 GMT

I have used the tips for testing but not much until now. And I haven't seen the magnetization yet

Thanks for the heads up though

RE: Problem detected with the Non-Slip Probe Tips

genebren — Sun, 12 Aug 2018 16:36:45 GMT

John,

My probes have not appeared to have any magnetic tendencies. They are still however working perfectly and are happily permanently attached to my hand-help DVM. On the other hand, my tweezers do periodically become magnetized and/or gummed up with flux and refuse to let go of components as I move them around under the microscope. Cleaning and demagnetizing help.

Thanks for the update/heads up!

Gene

RE: Problem detected with the Non-Slip Probe Tips

Jan Cumps — Sun, 12 Aug 2018 10:22:47 GMT

I've just checked. and none of the tips you sent me are magnetic. Not even the smallest SMD I have is trying to stick to the tips.

I tried SOIC-8, SOT-23 and a set of small (0603 and 1206) ceramic capacitors and resistors.

RE: Problem detected with the Non-Slip Probe Tips

Gough Lui — Sun, 12 Aug 2018 03:51:58 GMT

That's something I've fought with before - not only probe tips but tweezers, pliers and virtually any metallic tool imaginable.

It reminds me of what one of my former teachers told me - if your tools are getting magnetized, either you've got a magnet nearby or you've done something silly and run some decent current through at one stage. I suspect he might be right - accumulated DC current flow with the magnetic field might well leave a residual magnetic field.

I suppose for those without a degausser, they could perhaps wave the probe around very quickly on front of a permanent magnet while slowly bringing the magnet away to simulate that decaying-alternating field that should remove residual magnetism as in old CRT monitors.

- Gough