SD-1 clipping diodes

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olsen_lars
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Joined: Mon Oct 23, 2023 2:44 pm

SD-1 clipping diodes

Post by olsen_lars » Mon Oct 30, 2023 9:29 am

I was wondering what type of diodes from Made in Japan run were most common for the SD-1 overdrive.

I’ve had 3 MIJ SD-1s in my hands - and they all had supposedly 1s1588 clipping diodes. The ones with orange base colour and thick black stripe.

I only have seen 1 forum comment stating the thick black stripe diodes are same as 1s1588 diodes with the blue stripe. The difference is stated as a different manufactorers produced the same diodes, but used different colours. Is this true?

What type of diodes does your MIJ SD-1 have?
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fernieite
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Location: Toronto. Age: Early 60s
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Re: SD-1 clipping diodes

Post by fernieite » Wed Nov 01, 2023 11:21 am

Welcome to the forum, man.

My 1981 NEC chip (version A board) has the black stripe clipping diodes.
Here's a lengthy thread that may answer your question.
viewtopic.php?f=6&t=585
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