2SA1302 and 2SC3281

Diode · 7th March 2003, 12:26 AM

Where is a good supplier of these parts. Cost is an issue so I'm looking for cheap as well.

What can I use instead of these? Flatpacks please. I'm trying to steer away from TO-3's if possible.

Thanks in advance,

Chris

OliverD · 7th March 2003, 12:31 AM

As those parts are out of production, it is likely you will get counterfeits - especially from a cheap source. In most applications, the 2SA1943 and 2SC5200 are a direct replacement from Toshiba with very similar specs.

Toshiba power BJTs are available from digikey for reasonable prices.

Jonathan M · 7th March 2003, 12:40 AM

Hi Chris,

Toshiba stopped producing these some 2 years (at least) ago. The replacements from Toshiba are the 2SA1943 and 2SC5200.

You could you equivalent MJL parts (MJL-1302 and MJL-3281) or even the MJL21193/4 parts. These are sampling at www.on-semi.com if you wish to go that route. Also, www.audiochips.net has the MJL chips in matched pairs for $12 a pair I believe.

I have been stung by fake output transistors building a P68 Sub amp of Rod Elliott design. My report of the amp is here . You should be able to click through from their for pics of my fake transistors (Go through the Electronics link).

Cheers,
Jonathan

sam9 · 7th March 2003, 01:39 AM

I believe www.sealelectronics.con still sells some matched pairs. There is a premium, but it beats buying more than you need and matching them yourself.

rendisha · 7th March 2003, 04:13 AM

Try at Allied

MJL1302A - $3.3500
MJL3281A - $2.9800

MJL21193 - $3.9000
MJL21194 - $3.9000

Dave · 7th March 2003, 05:40 AM

Digi-key are well priced as far as I know and I'd be very very surprised if they sold fake devices.

Diode · 7th March 2003, 11:45 PM

Thank you everyone for the help!!!! It's so nice as I have been extremely frusterated trying to get these parts.

Chris

saurus · 10th March 2003, 03:28 PM

I got my MJL1302A/3281A's from Newark and they work fine.
The free samples from OnSemi are the way to go, but sometimes they are backordered and you don't get them for weeks.

Samuel Jayaraj · 10th March 2003, 03:35 PM

I am surprised that no one here pointed out that the MJL21193/ MJL21194 are not electrical equivalents of MJL3281/MJL1302 as are the upgraded versions viz., 2SC5200/2SA1943.

PMA · 10th March 2003, 05:15 PM

Use 2SA1943/2SC5200 instead of them, you will avoid the danger of clones.

7th March 2003, 12:26 AM	#1
Diode diyAudio Member Join Date: Feb 2003 Location: Oklahoma USA	2SA1302 and 2SC3281 Where is a good supplier of these parts. Cost is an issue so I'm looking for cheap as well. What can I use instead of these? Flatpacks please. I'm trying to steer away from TO-3's if possible. Thanks in advance, Chris __________________ The best audio is clean audio!

7th March 2003, 12:40 AM	#3
Jonathan M diyAudio Member Join Date: Nov 2002 Location: New Zealand	Watch for fakes... Hi Chris, Toshiba stopped producing these some 2 years (at least) ago. The replacements from Toshiba are the 2SA1943 and 2SC5200. You could you equivalent MJL parts (MJL-1302 and MJL-3281) or even the MJL21193/4 parts. These are sampling at www.on-semi.com if you wish to go that route. Also, www.audiochips.net has the MJL chips in matched pairs for $12 a pair I believe. I have been stung by fake output transistors building a P68 Sub amp of Rod Elliott design. My report of the amp is here . You should be able to click through from their for pics of my fake transistors (Go through the Electronics link). Cheers, Jonathan

7th March 2003, 01:39 AM	#4
sam9 diyAudio Member Join Date: Jun 2002 Location: Left Coast	matched pairs I believe www.sealelectronics.con still sells some matched pairs. There is a premium, but it beats buying more than you need and matching them yourself.

7th March 2003, 11:45 PM	#7
Diode diyAudio Member Join Date: Feb 2003 Location: Oklahoma USA	Thank you everyone for the help!!!! It's so nice as I have been extremely frusterated trying to get these parts. Chris __________________ The best audio is clean audio!

10th March 2003, 03:35 PM	#9
Samuel Jayaraj diyAudio Member Join Date: May 2001 Location: Bangalore, India	I am surprised that no one here pointed out that the MJL21193/ MJL21194 are not electrical equivalents of MJL3281/MJL1302 as are the upgraded versions viz., 2SC5200/2SA1943. __________________ Sam


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7th March 2003, 12:31 AM	#2
OliverD diyAudio Member Join Date: Nov 2002 Location: Germany	As those parts are out of production, it is likely you will get counterfeits - especially from a cheap source. In most applications, the 2SA1943 and 2SC5200 are a direct replacement from Toshiba with very similar specs. Toshiba power BJTs are available from digikey for reasonable prices.

7th March 2003, 04:13 AM	#5
rendisha diyAudio Member Join Date: Apr 2002 Location: Belgrade, Serbia	Try at Allied MJL1302A - $3.3500 MJL3281A - $2.9800 MJL21193 - $3.9000 MJL21194 - $3.9000

7th March 2003, 05:40 AM	#6
Dave diyAudio Member Join Date: Oct 2001 Location: New Zealand	Digi-key are well priced as far as I know and I'd be very very surprised if they sold fake devices.

10th March 2003, 03:28 PM	#8
saurus diyAudio Member Join Date: Aug 2002 Location: West of Boston	I got my MJL1302A/3281A's from Newark and they work fine. The free samples from OnSemi are the way to go, but sometimes they are backordered and you don't get them for weeks.

10th March 2003, 05:15 PM	#10
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	2SA1302/2SC3281 Use 2SA1943/2SC5200 instead of them, you will avoid the danger of clones.

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