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Replacing 2SK 215/2SJ78
Replacing 2SK 215/2SJ78
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Old 16th July 2005, 07:15 PM   #1
palesha is offline palesha  India
diyAudio Member
Join Date: Nov 2001
Location: Pune India
Default Replacing 2SK 215/2SJ78

My friend has a power amplifier with 2SK215/2SJ78 mosfets in the driver stage. He is not getting original devices so he needs to change it. The output is 2SC5200/2SA1943 pair. I don't hv circuit. Has anybody done some replacement like this?
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Old 17th July 2005, 01:58 AM   #2
Charles Hansen is offline Charles Hansen
Join Date: May 2003
Location: Colorado
There is no substitute for these devices. However, they are still in production. Hitachi has separated their discrete semiconductors to Renesas:


You should be able to purchase these for a few dollars each.
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Old 17th July 2005, 04:15 AM   #3
dudu is offline dudu  Israel
diyAudio Member
Join Date: Jul 2005
Location: Tal-el (galil)
Default answer

You can find those Mos-n-fet and Mos-p-fet on:
Login as a demo user.
Best regards
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Old 31st May 2012, 02:49 PM   #4
vish7878 is offline vish7878
diyAudio Member
Join Date: Jun 2010
Default 2sk215 replacement

insted u can used 2sk216 and 2sj79. buy those items on ebay even 2svishk215and 2sj78,hope this helps.............

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Old 9th June 2013, 04:33 AM   #5
lalunatech is offline lalunatech
diyAudio Member
Join Date: Nov 2011
I need a 2SK215 too for a Samson S2000 PA amp where it is used as a driver. This device is unusual in that the centre pin (pin 2) is the source and is connected to the flange. This makes finding a substitute difficult as most modern mosfets seem to have drain on pin 2. I am going for a 2SK216 off eBay, same but 200V not 180V and cheaper than the 215.
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