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Sets, Parts and Service Information Wanted (private buyers only, no swaps) If you need help obtaining components, sets or equipment, post a message here. Private buyers only - no traders. No swaps.

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Old 24th Sep 2021, 8:36 am   #1
Cobaltblue
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Default International Rectifier 12T20T

Information on this part is eluding me.

Its most likely from the 1960's or 70's

It's a square epoxy block of a similar design to bridge rectifiers only it has 5 connections instead of 4

It reads like a silicon 3 phase bridge rectifier.

Its a curiosity really I have no immediate use for it. Its come out of a box last opened in the early 1980 when I moved from Torquay, I probably had data on it at that time

Cheers

Mike T
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Old 24th Sep 2021, 9:48 am   #2
Restoration73
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Default Re: International Rectifier 12T20T

I think the extra pin is trigger (gate) and the four diodes are in fact thyristors.
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Old 24th Sep 2021, 10:12 am   #3
Cobaltblue
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Default Re: International Rectifier 12T20T

This is how it looks on the component analyser and Multimeter.

They read as Silicon diodes all with very similar forward voltage drop and capacitance.

Cheers

Mike T
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Old 24th Sep 2021, 10:31 am   #4
Marconi_MPT4
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Default Re: International Rectifier 12T20T

There is short form data on the ASAP Aerospace site:

https://www.asap-aerospace.com/rfq/i...498085/12t20t/

Scroll down the page to about half way.

It is rated at 12A 200/275V (@60Hz) and described as a rectifier.

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Old 24th Sep 2021, 11:31 am   #5
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Default Re: International Rectifier 12T20T

Thanks for that Rich its more than I was able to find

Cheers

Mike T
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