Author Topic: Please help ID old capacitor (I think)  (Read 530 times)

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Offline watchmakerTopic starter

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Please help ID old capacitor (I think)
« on: April 30, 2024, 11:55:57 am »
I think this used to be a capacitor.  It is out of a 50 year old machine.

In looking up other capacitors for replacement, measurement units seem to have changed from mFD to uFD and I am not sure how to interpret the color code.

THANKS!

2153842-0
Regards,

Dewey
 

Online Ian.M

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Re: Please help ID old capacitor (I think)
« Reply #1 on: April 30, 2024, 12:03:42 pm »
Mullard 'Tropical Fish' metallised PET or polyester film capacitor.
https://www.petervis.com/electronics/capacitor/capacitor-colour-code.html
 

Offline Roehrenonkel

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Re: Please help ID old capacitor (I think)
« Reply #2 on: April 30, 2024, 12:04:50 pm »
Hi watchmaker,

100nF 250V (IMHO)
 

Online wasedadoc

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Re: Please help ID old capacitor (I think)
« Reply #3 on: April 30, 2024, 12:28:38 pm »
Brown, black, yellow is 1,0,4 and means 10 followed by 4 zeros pF.  100nF or 0.1uF.  (Without a doubt because I used lots of these and other values back in the 1970s.)
 

Offline watchmakerTopic starter

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Re: Please help ID old capacitor (I think)
« Reply #4 on: April 30, 2024, 05:11:09 pm »
Thank you both.  I thought the top color was just part of the body.  Ya larned me sumpin!
Regards,

Dewey
 

Online themadhippy

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Re: Please help ID old capacitor (I think)
« Reply #5 on: April 30, 2024, 05:43:11 pm »
pity they no longer use the colour code instead of todays minuscule print
 

Offline srb1954

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Re: Please help ID old capacitor (I think)
« Reply #6 on: May 01, 2024, 10:23:30 am »
Thank you both.  I thought the top color was just part of the body.  Ya larned me sumpin!
It was a common problem for the leads to break away from this type of capacitor when soldering into circuit. The heat from the soldering softens the weak solder used to connect to the capacitor electrodes and, apart from the solder on those electrodes, the only thing holding the leads on is a couple of layers of paint!

If you want to replace this capacitor with the same type (for historical accuracy) you need to ensure that absolutely no sideways forces are applied to the leads when soldering.
 

Offline wraper

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Re: Please help ID old capacitor (I think)
« Reply #7 on: May 01, 2024, 10:43:21 am »
Capacitor is likely still operational and measurable. Just stick a probe instead of missing terminal.
 


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