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Old 20th April 2015, 03:31 PM   #1
dallek1 is offline dallek1  United States
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Default SAE 310 Transistor replacement info

hello,
I have an SAE 310, I need to replace the transistor, (power/TO-3) . they are impossible to read the original numbers, they were stamped SAE1 and SAE2. can anyone provide the correct part numbers please?
ns
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Old 21st April 2015, 08:28 AM   #2
djk is offline djk
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SAE 310, or 3100?

The 100W 3100 needs high voltage parts, the 50W 310 uses darlinton.

I would probably use MJ21195/96 for the 3100 (also suggested by Bongiorno, the designer), or MJ11021/22 for the 310.

http://www.onsemi.com/pub_link/Collateral/MJ11021-D.PDF

The original darlington are NLA, and were rated much lower.

On second thought, these are the same spec as the original (2N6052/59)

http://www.mouser.com/ds/2/68/2n6050-6052-17130.pdf
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Last edited by djk; 21st April 2015 at 08:51 AM.
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Old 21st April 2015, 01:57 PM   #3
dallek1 is offline dallek1  United States
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Quote:
Originally Posted by djk View Post
SAE 310, or 3100?

The 100W 3100 needs high voltage parts, the 50W 310 uses darlinton.

I would probably use MJ21195/96 for the 3100 (also suggested by Bongiorno, the designer), or MJ11021/22 for the 310.

http://www.onsemi.com/pub_link/Collateral/MJ11021-D.PDF

The original darlington are NLA, and were rated much lower.

On second thought, these are the same spec as the original (2N6052/59)

http://www.mouser.com/ds/2/68/2n6050-6052-17130.pdf
i could not ask for a better reply, I found a cross reference site in the meantime but your reply is better, way better.
thank you
ns
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Old 27th April 2015, 07:35 PM   #4
dallek1 is offline dallek1  United States
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please can you tell be the bias procedure for this amp, I should be reading across the 0.2 ohm 5 watt resistors right but what am I setting it to? please?
ns
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