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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 12th Jul 2018, 9:06 am   #1
mosfetmaniac
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Default What is this component?

Greetings

I've offered to have a look at a friends UPS (yes not vintage sorry) and I have come across this component on the AC supply side, the problem is that I dont know what it is?
Would appreciate if someone could point me in the right direction in identifying it, it's in an Eaton 5p650AU UPS 650VA

Cheers
MM
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Old 12th Jul 2018, 9:10 am   #2
turretslug
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Default Re: What is this component?

It's a miniature, high-current discharge tube- under the heatshrink, there'll be a short ceramic tube with end caps. It's designed to quench short, intense over-voltage spikes (e.g. lightning) and the heatshrink hopes to contain the splinters of ceramic shrapnel if the spike is really brutal!

It should measure open-circuit if in good condition (at least with "usual" ohm-meter voltages!)
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Old 12th Jul 2018, 9:13 am   #3
Cobaltblue
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Default Re: What is this component?

Difficult to tell with the heat shrink on it but possibly a GDT or spark gap ?

https://www.alibaba.com/product-deta...42389dab8yOpA1

Turretslug beat me to it

Cheers

Mike T
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Old 12th Jul 2018, 9:18 am   #4
McMurdo
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Default Re: What is this component?

Quite reliable things really.
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Old 12th Jul 2018, 9:30 am   #5
lesmw0sec
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Default Re: What is this component?

Quote:
Originally Posted by McMurdo View Post
Quite reliable things really.
Absolutely - they have saved my internet router from phone line discharge on a number of occasions. I know they did the job, since the line fuses told me!

Les.
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Old 13th Jul 2018, 5:54 pm   #6
mosfetmaniac
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Default Re: What is this component?

That makes sense considering where it was, the double sided board was making it hard to follow.
Thanks very much to all!
Cheers
MM
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