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Isolating a screw which fails under ESD test

Isolating a screw which fails under ESD test

(OP)
Hello all,

We are having problems with a carbon-steel M3x16 self-tapping screw, which fails under voltage pulse test (25 kilo-Volts).

It is a self tapping screw for plastics, and when under test, voltage passes through it into the system.

I'm looking for a solution, in the form of an isolated type of self-tapping screw (maybe other material), if exists,

or

ways to isolate this screw.

Any other suggestion(s) on how to avoid this problem will be appreciated.

recommendations?

Thanks in advance,
Eran.

RE: Isolating a screw which fails under ESD test

What is it arcing to?
Shorter screw and thicker boss are the first steps.
But if it is shorting to a particular internal item them perhaps a shield between them would help.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Isolating a screw which fails under ESD test

(OP)

Quote (EdStainless)


Shorter screw and thicker boss are the first steps.
But if it is shorting to a particular internal item then perhaps a shield between them would help.

Thanks!
I'll try that.

Best regards.

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