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Old 20th January 2011, 10:17 PM   #1
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Default Transistor needed

I need a 2SB618A to repair a Harman Kardon receiver. It is PNP power with a 7A and 150V rating.

Can anyone help find one of these, or a reasonable substitute? The receiver isn't worth spending much so anything cheap is good.
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Old 21st January 2011, 08:13 PM   #2
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2SB 556 ( this is a to3, of course) From a monacor amp that Didn't die!
Should be super compatible
I am ready to give up on all my tosh To3 (eight) (I test them with a little tool that goes beep, and is soo quiet if they are dead)
Are you quite sure the NPN complement is really OK?
I can come up with approprate drivers ( even Tosh) which would be a very good idea,
and possibly a pair of emitter resistors if you tell me the value.
The only thing representing notable $$ is the PNP, and even that will be cheap
Doug
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Old 21st January 2011, 11:02 PM   #3
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Thanks Doug! I have all the parts I need except the PNP. They are available but too pricey for me. This is for a receiver someone asked me to fix and then waffled. If I can fix it I might be able to sell it for what I already have in it. Otherwise it's in my way and I may end up scrapping it.
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Old 23rd January 2011, 06:55 PM   #4
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Default smeiconductor

Ok, but the shipping is ?? Do you have an idea, thru post office?
I can use a CD mailer and hope they don't squish it.
My price is $11 You can get another if this cooks, for some reason
(I expect you to use a variac and bring up the power slowly, checking for symmetrical voltages, current draw)
Turns out this is the pioneer one, the other pair is 427 from the monacor, I can't imagine there is much difference.
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Old 23rd January 2011, 11:23 PM   #5
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Quote:
Originally Posted by bob91343 View Post
I need a 2SB618A to repair a Harman Kardon receiver. It is PNP power with a 7A and 150V rating.

Can anyone help find one of these, or a reasonable substitute? The receiver isn't worth spending much so anything cheap is good.
How about $4 plus shipping.
MJ15022G ON Semiconductor Bipolar Power
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Old 24th January 2011, 08:12 PM   #6
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Yeah but that's NPN and I need PNP.
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Old 24th January 2011, 11:17 PM   #7
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Quote:
Originally Posted by bob91343 View Post
Yeah but that's NPN and I need PNP.
Opps skipped a line
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Old 24th January 2011, 11:45 PM   #8
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Okay thanks. The only hesitation I have is that I am not sure it's a good sub (and will probably require chassis surgery to mount) and when I add shipping it will raise the price. I'll talk to Mouser and find out the cheapest shipping.

Thanks you for the lead[ I appreciate it. I did find the right part but the place has $100 minimum. So many suppliers do that, effectively saying they don't want to bother with the little guys.
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Old 25th January 2011, 12:22 AM   #9
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No the transistor I am replacing is NOT a TO-3. It's a strange, rare package with bat wings and that's part of the problem.
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Old 25th January 2011, 12:26 AM   #10
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Quote:
Originally Posted by bob91343 View Post
No the transistor I am replacing is NOT a TO-3. It's a strange, rare package with bat wings and that's part of the problem.
Ohh..Bat wings--Good luck!! They have long been out of production.MarkTheFIXER designed and fabricated PCB's to adapt the batwings to TO-3PL's to substitute for the Pioneer SX-1280's
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