Author Topic: A replacement for an old PNP transistor  (Read 1003 times)

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Offline FatalityXTopic starter

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A replacement for an old PNP transistor
« on: September 09, 2019, 05:55:52 pm »
Hello everyone, I'm looking for a replacement for this transistor (https://www.datasheet4u.com/datasheet-pdf/Rohm/B1357/pdf.php?id=944128) from an old Casio keyboard (CT 770) that I'm trying to fix. Thanks.
 

Offline magic

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Re: A replacement for an old PNP transistor
« Reply #1 on: September 09, 2019, 07:01:29 pm »
It seems there are some on eBay. Maybe genuine, I'm not sure if they would bother faking a nonstandard package like this one.
Search for the full name: 2SB1357.
 

Offline kripton2035

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Offline MagicSmoker

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Re: A replacement for an old PNP transistor
« Reply #3 on: September 09, 2019, 07:11:08 pm »
It's difficult to give a recommendation without knowing exactly how this BJT is being used, but *most* of the time the specific part isn't too critical.

The package - TO-126 (aka TO-225) - is practically obsolete, but DigiKey, somewhat to my surprise, lists about 40 parts in stock in that package. A few possible substitutes from that list are MJE171G, KSB1151YS, BD440S, BD788G, 2N5195G.

 

Offline richnormand

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Re: A replacement for an old PNP transistor
« Reply #4 on: September 09, 2019, 08:35:33 pm »
NTE378.
Not exact mechanical replacement but should be OK if you cannot find the original.
Repair, Renew, Reuse, Recycle, Rebuild, Reduce, Recover, Repurpose, Restore, Refurbish, Recondition, Renovate
 


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