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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 17th Jan 2021, 7:25 pm   #1
Ted Kendall
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Default 2SK23A equivalent?

This is a FET in a Sony (ALPS) FM front end I'm trying to subdue. Anybody know of a readily available equivalent? The usual sources aren't that forthcoming.
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Old 17th Jan 2021, 7:39 pm   #2
Restoration73
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Default Re: 2SK23A equivalent?

Towers lists BFW61 or 2N5459 - the latter is stocked by Cricklewood Electronics.

BF256 L versions have the same pinout d,g,s
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Old 17th Jan 2021, 7:41 pm   #3
JonSnell
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Default Re: 2SK23A equivalent?

NTE312. Replacement: 2SK23A. - JFET N Channel.
https://www.datasheetarchive.com/2SK23A-datasheet.html
It looks like Newark have some stock; https://www.newark.com/nte-electroni...-92/dp/29C5294

Hope that helps.
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Old 17th Jan 2021, 10:42 pm   #4
Bazz4CQJ
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Default Re: 2SK23A equivalent?

attached are datasheets for a 2SK19, and my recollection is that the 19 was used in some FM tuners and is not too far away from the 23. I can pop a 19 in the post for you if you'd like to try it. I bought a few for a project some time ago.

B
Attached Files
File Type: pdf 2sk19.PDF (44.7 KB, 70 views)
File Type: pdf 2sk19 data.pdf (147.0 KB, 54 views)
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Old 18th Jan 2021, 12:39 am   #5
Ted Kendall
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Default Re: 2SK23A equivalent?

Thank you all - PM sent, Baz.
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