Sourcing or fabricating a replacement capacitor

Thread Starter


Joined Feb 26, 2020
Hi all,
I'm looking to replace a blown capacitor in some workshop equipment.
The exact item is proving hard to replace and I was thinking of making a composite set of caps to replace.
This is not an area I am familiar with so would appreciate a sanity check.

The cap is a dual canister cap with 3 wires connecting each pole of an AC motor to ground.

Label reads:

0.1uf (x2)
0.005uf(y) + 0.005uf(y)
Delta 250v

I suspect this is a motor run capacitor, with built in noise reduction?
Although the values are a little low for a motor run cap.

I am really struggling to find an equivalent part. Would it be correct to connect a 100nf+5nf in parallel X2 and bond the grounds together?,
If so would non polarized (polypropylene) caps be appropriate in this application 0.1uf electrolytic is hard to find.

Thread Starter


Joined Feb 26, 2020
Thanks for the reply albert, Yes. I had made some association when I saw the 3 chord cap with power filter caps from tube amps.
I had assumed this was a motor run cap because its the only other 2 in a can cap i'd heard of.

I have since come to realise the X2 is the classification not times 2. And understand this to be a filter capacitor array.

I have identified the following as a suitable replacement.