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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 10th Nov 2018, 7:51 pm   #1
saddlestone-man
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Default 5E4 diode spec

Hello All

Does anyone know the spec of the 5E4 diode, which I believe was used in some Advance test gear, and maybe in some AVOs?

Is it silicon or germanium?

best regards ... Stef
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Old 10th Nov 2018, 8:56 pm   #2
ms660
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Default Re: 5E4 diode spec

5E4...Silicon, 400V PIV, Imax 350mA from various glimpses on the web.

Lawrence
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Old 10th Nov 2018, 9:13 pm   #3
HamishBoxer
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Default Re: 5E4 diode spec

BY127 or similar would work.
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Old 10th Nov 2018, 9:48 pm   #4
ms660
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Default Re: 5E4 diode spec

5E4....To save me writing the data out, book page 18, Line No. 594c:

https://archive.org/details/DATASemi...olVII/page/n19

EDIT: The sign of the cross means PIV rating, sign meanings etc are at the end of the book.

Lawrence.

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Old 10th Nov 2018, 10:05 pm   #5
saddlestone-man
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Default Re: 5E4 diode spec

Many thanks for the data.

best regards ... Stef
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