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Old 4th April 2005, 02:12 PM   #1
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Default Need help finding replacement diode


I'm repairing an older amp. Need a replacement detector diode to replace the original germanium 2-0A90 (Matsushita/Panasonic).

the only specs listed in the repair manual are as follows:

Reverse Voltage (Vr): 15V
Peak Forward Current (Ifm): 150mA
Forward Surge Current (If surge): 0.4A
Junction Temp (Tj): 70C
Forward Current (If min): 4mA @ 1V (Vf)

I found an NTE replacement (NTE110MP) but the specs look different, and I have heard many no so great things about NTE stuff.

Any help would be appreciated.

Also, if someone can tell me what specs are important for a diode used for signal detection, that would be great to, as I am trying to learn.
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Old 4th April 2005, 02:45 PM   #2
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Found originals (NOS) at B&D Enterpises (
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Old 4th April 2005, 04:21 PM   #3
sam9 is offline sam9  United States
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You will have to do some heavy "Googling" but Fairchild has a cross reference somewhere (I've seen it long ago) that among other things suggests current silicon substitutes for old germainium diodes. I assume this relates to their switching function. I don't think it would work if the diode is used for a voltage reference.
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