[sdiy] Mystery part.. probably a resistor ??

[Peter Ullrich]

Metal oxide varistors have the same design and housing.
Have a look at the TDK/Epcos CU4032 (10.2x8mm) or CU3225(8x6.3mm) series.
https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_CU_Standard.pdf
Ciao
Peter

Von: Synth-diy <synth-diy-bounces at synth-diy.org> Im Auftrag von H.Sergio Alves via Synth-diy
Gesendet: Dienstag, 7. April 2026 13:33
An: Colin Hinz <music-lists at primus.ca>
Cc: synth-diy at synth-diy.org
Betreff: *EXT* Re: [sdiy] Mystery part.. probably a resistor ??

Looks like a TVS to me :)

On Wed, 1 Apr 2026 at 23:06, Colin Hinz via Synth-diy <synth-diy at synth-diy.org<mailto:synth-diy at synth-diy.org>> wrote:
Jean-Pierre,

I can't ID the component, alas. (Thank you, encrapulated search engines
:( ) I do recognize the ruler from the Chicago Etching Corporation,
though. I got one at a trade show long ago. What are the odds?

Unsurprisingly the company is long gone. Looks like a Nordstrom store
occupies the site now.

- Colin

On 01/04/2026 4:49 p.m., Jean-Pierre Desrochers via Synth-diy wrote:
> This is completely out of synth stuff but maybe you could help identify
> this part..
>
> It is from a double electric reclining sofa.
>
> It has 2 small controls PCB's. One on each side holding 7 small limit
> switches
> with 3 of these parts that look like resistors.
>
> On the sofa's left side
>
> 4 of the switches still work but the 3 others
> do not operate their motor anymore.
>
> The right side still works.
>
> I desoldered the 3 parts which are the same
>
> and measured them.
>
> 2 measured 270pf (burned open resistor ?)
>
> And the other measures around 1.0 ohm.
>
> They operate 29vdc motors.
>
> What do you think ?

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