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Old 06-30-2022, 08:47 AM   #1
Crystaleyes
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Default Anyone know of an alternative for a R10E2662-2 DPDT relay

I'm having trouble finding an R10 E2662-2 telephone relay, originally made by Potter & Brumfield, and have also been unable to find a suitable replacement.

It is missing from a Fluke 8600A bench multimeter

It isn't really mentioned in the manual, yet judging by others in the series, it appears to have a 4.5v coil, but I could be wrong...

I can find the later R10 E1Y2 relay, however it has a 12v coil

Enclosing pictures of the socket and relay pin assembly

Here is the service manual;

https://assets.fluke.com/manuals/8600a___imeng0300.pdf
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Last edited by Crystaleyes; 06-30-2022 at 09:19 AM..
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Old 06-30-2022, 10:15 AM   #2
Per Hansson
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

I can confirm it is most likely a 4.5v relay because it sits on the +5v line and is controlled by a transistor so that will have a 0.7v drop...

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Old 06-30-2022, 10:55 AM   #3
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

Maybe this? R10-E2Y2-V52 (Digikey) 6v coil (operates at 4.5v) It has PCB terminals but might work?

Last edited by R_J; 06-30-2022 at 10:59 AM..
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Old 06-30-2022, 11:01 AM   #4
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

Looking at a photo here shows a coil resistance of 145Ω
From that same series of relays you've shown we can see there exists a version with a coil resistance of 140Ω so pretty much a perfect match:
R10-E1W2-S140 it is a 5v relay but it operates down to 3.75v
Just need to make sure it has the proper number of contacts and the configuration they are in and that it fits the socket:
https://eu.mouser.com/ProductDetail/...J6JE0CHQ%3D%3D
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Old 06-30-2022, 07:30 PM   #5
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

Even if the pins are not exactly the same if you have room in the enclosure you might be able to mount it some where near the board
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Old 07-01-2022, 03:39 AM   #6
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

As long as the coil voltage and relay configuration is the same, you can wire the new relay in and glue it in its new place. I even done this with unobtainable rf relays. Works fine as kind.
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Old 07-01-2022, 06:30 PM   #7
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Default Re: Anyone know of an alternative for a R10E2662-2 DPDT relay

Fantastic info gents. Just what the doctor ordered.

With so many different relay options, searching for an obsolete equivalent isn't so easy..

Many thanks!
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