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Author Topic: Diode identification  (Read 3203 times)

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Offline k.valentinoTopic starter

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Diode identification
« on: January 23, 2016, 12:25:13 pm »
Hi  :) , need help with one diode marked as ED 51 (Mercedes ABS module). I need to replace it, it’s blown. It's Vishay diode size DO-214AB. From Vishay web page datasheets I don’t found this diode.
I thought this is TVS diode, but it's not grounded  :-// . I Don't know!
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Online PA0PBZ

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Re: Diode identification
« Reply #1 on: January 23, 2016, 12:39:10 pm »
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Offline k.valentinoTopic starter

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Re: Diode identification
« Reply #2 on: January 23, 2016, 12:54:32 pm »
Quote from: PA0PBZ on January 23, 2016, 12:39:10 pm
This: http://www.marsport.org.uk/smd/smde.htm says it's EGF1D.

Hi, thx! 90% thought the same model, but I doubted by the size.

Someone else...
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Offline k.valentinoTopic starter

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Re: Diode identification
« Reply #3 on: January 23, 2016, 01:32:01 pm »
at the same PCB have another diode also marked as ED, but it is less than the blown  :-//
« Last Edit: January 23, 2016, 01:43:07 pm by k.valentino »
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Offline k.valentinoTopic starter

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Re: Diode identification
« Reply #4 on: January 24, 2016, 11:18:12 pm »
Detected  ;) - ES3D.
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Offline android

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Re: Diode identification
« Reply #5 on: January 25, 2016, 07:46:24 am »
...and your ED51 is an old General Semiconductor ES1D. See...

http://matthieu.benoit.free.fr/cross/competitive/general_semi/marking.pdf

...apparently the 51 is the date code (1995 January), which matches the era of the other devices on the board.
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Offline k.valentinoTopic starter

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Re: Diode identification
« Reply #6 on: January 27, 2016, 11:29:52 pm »
Thx android! All fine :), with replace the diode (with MUR420)
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