Help-Replacement part for 2sc4793

acliao · 27th October 2003, 10:58 PM

Can anyone help me on finding the On-Semi replacement part for Toshiba 2sc4793? It's not easy to find 2sc4793 in the US. Thank you.

Vigier · 27th October 2003, 11:12 PM

Hi,

as fas as I know, the 2SC2238 is a good replacement (the 2SC2238 is more common, especially in combination with the 2SA968)

Grtz, Joris

Recitification: P.S. Woops, I didn't read it very well, you want an on-semi equivalent... I don't know one

Vigier · 27th October 2003, 11:27 PM

Hi again,

I've been searching the tables of ON-Semiconductor, using the datasheet of the 2SC4793:
http://www.bmm-electronics.nl/docume...ba/2sc4793.pdf, but I couldn't find a match!
Sorry!

Grtz, Joris

Praise! · 29th October 2003, 11:07 AM

I have some 2SC4793. If you want 1 or 2, I can give them/it
to you. If you need more than 3, I'll have to charge you for that.
Just tell me your address by private-emailing to me. Praise! be
to the LORD!

James Yung
Praise! Audio

Praise! · 29th October 2003, 11:18 AM

If you are using 2SC4793/2SA1837 as drivers, you have
some alternatives: 2SC5171 / 2SA1930 also from Toshiba.
I like them better because they have high and symmetrical
fT = 200 MegaHertz compared to lower and asymmetrical
fT = 100 / 70 MegaHertz. I have them as well in 2 months
depending on factory schedule. Log on to Toshiba
semiconductors for data sheets.

AKSA · 30th October 2003, 01:12 AM

Acliao,

You can use the MJE15030 from OnSemi in place of the 2SC4793. The complement of this device is the MJE15031. It's pin for pin replacement.

These devices have four times the current rating, appreciably more dissipation as well, and are rated at 30MHz. This is not so fast as the 4793/1837, but in practice, and particularly on an audio amplifier, you won't notice the difference as the emitter follower is intrinsically a very fast configuration; the slowest device on an audio amplifier is, by design, the voltage amplifier.

Cheers,

Hugh

mirlo · 4th November 2003, 02:58 AM

I believe you can easily get 2SC4793 from Digikey in the US.

http://www.digikey.com

-- mirlo

yahoo · 17th December 2010, 05:53 PM

the qsc c3298 compliment a1306 will work perfectly

Greg Erskine · 17th December 2010, 06:18 PM

Quote:

Originally Posted by yahoo

the qsc c3298 compliment a1306 will work perfectly

After 7 years he has probably solved his problem or moved on.

AndrewT · 17th December 2010, 06:41 PM

Quote:

Originally Posted by AKSA

.......... rated at 30MHz. This is not so fast as the 4793/1837, but in practice, and particularly on an audio amplifier, you won't notice the difference as the emitter follower is intrinsically a very fast configuration; the slowest device on an audio amplifier is, by design, the voltage amplifier.

7years old, but I do like the nibbles left by AKSA for us mere mortals.

27th October 2003, 10:58 PM	#1
acliao diyAudio Member Join Date: May 2002 Location: Los Angeles, CA	Help-Replacement part for 2sc4793 Can anyone help me on finding the On-Semi replacement part for Toshiba 2sc4793? It's not easy to find 2sc4793 in the US. Thank you.

29th October 2003, 11:07 AM	#4
Praise! diyAudio Member Join Date: Oct 2003 Location: Perth	I have I have some 2SC4793. If you want 1 or 2, I can give them/it to you. If you need more than 3, I'll have to charge you for that. Just tell me your address by private-emailing to me. Praise! be to the LORD! James Yung Praise! Audio

29th October 2003, 11:18 AM	#5
Praise! diyAudio Member Join Date: Oct 2003 Location: Perth	alternatives If you are using 2SC4793/2SA1837 as drivers, you have some alternatives: 2SC5171 / 2SA1930 also from Toshiba. I like them better because they have high and symmetrical fT = 200 MegaHertz compared to lower and asymmetrical fT = 100 / 70 MegaHertz. I have them as well in 2 months depending on factory schedule. Log on to Toshiba semiconductors for data sheets.

30th October 2003, 01:12 AM	#6
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	Acliao, You can use the MJE15030 from OnSemi in place of the 2SC4793. The complement of this device is the MJE15031. It's pin for pin replacement. These devices have four times the current rating, appreciably more dissipation as well, and are rated at 30MHz. This is not so fast as the 4793/1837, but in practice, and particularly on an audio amplifier, you won't notice the difference as the emitter follower is intrinsically a very fast configuration; the slowest device on an audio amplifier is, by design, the voltage amplifier. Cheers, Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

4th November 2003, 02:58 AM	#7
mirlo diyAudio Member Join Date: Jul 2002 Location: San Diego	2SC4793 is at Digikey I believe you can easily get 2SC4793 from Digikey in the US. http://www.digikey.com -- mirlo


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27th October 2003, 11:12 PM	#2
Vigier diyAudio Member Join Date: Nov 2002 Location: Netherlands	Hi, as fas as I know, the 2SC2238 is a good replacement (the 2SC2238 is more common, especially in combination with the 2SA968) Grtz, Joris Recitification: P.S. Woops, I didn't read it very well, you want an on-semi equivalent... I don't know one

27th October 2003, 11:27 PM	#3
Vigier diyAudio Member Join Date: Nov 2002 Location: Netherlands	Hi again, I've been searching the tables of ON-Semiconductor, using the datasheet of the 2SC4793: http://www.bmm-electronics.nl/docume...ba/2sc4793.pdf, but I couldn't find a match! Sorry! Grtz, Joris

17th December 2010, 05:53 PM	#8
yahoo diyAudio Member Join Date: May 2007	the qsc c3298 compliment a1306 will work perfectly

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