what can i substitute the MJL4302A and the MJL4281A with?

demogorgon · 1st January 2005, 04:30 AM

Hi!
im currently ordering all the parts im gonna need for building the ESP P3a amp.

unfortunatly i'm not getting a hold of the MJL4302 end MJL4281A, or the suggested repalcements 2SA1216 and 2SC2922.

im gonna place the order shortly, but need a replacement!
i'm thinking about going for the BUW12 and its PNP complimentary..

I'm really hoping it's possible to just swap trnsistors, but offcours it isn't.. any sugestions?

regards
a overly tierd marius

hienrich · 1st January 2005, 04:39 AM

MJL21194/MJL21193

MJ15003/MJ15004

MJL21196/MJL21195

I GUESS THIS THINGS MIGHT WORK.

demogorgon · 1st January 2005, 04:46 AM

Hi Hienrich!

thanks for helping out!

unfortunatly the place i'm ordering from dont have'm..

any other transistor that you can think of?

regards
marius

demogorgon · 1st January 2005, 04:55 AM

well, i really have to order now, so i went for the original project 3 output devices. the MJE 2955T\3055T

I'l order the others in time i guess, when i can get them.

regards
marius

li_gangyi · 1st January 2005, 05:04 AM

dun use the 3055s and 2955s...they wun be as good...get the original parts from Onsemi...
www.onsemi.com

hienrich · 1st January 2005, 05:07 AM

i thinhk li_gangyi's right he thinks what i think. before what i think!!!!

demogorgon · 1st January 2005, 05:09 AM

Can't..

you have to pay shipment for samples right?
and then you have to use a visa, and i'm 17, so i dont have a visa..

guess i'l wait untill this summer when i turn 18 with getting the original parts from on-semi.

-marius

hienrich · 1st January 2005, 05:16 AM

by the way what devices are now at you hands. if you think that you in doubt with that just try to look for its specs in the net.

demogorgon · 1st January 2005, 05:16 AM

until then, the MJE 2955T\3055T will work.. right?
just not as good..
i bought 4 pears, needing only one pear per chanel, guess i could paralell two pairs to make up for missing power handeling. (right?)

Hienrich: i dont really have anything i could use as of right now.. only some darlingtons, but because og their high gain, they are not sutable for this amp i think..

hienrich · 1st January 2005, 05:21 AM

yes, it good to have two pairs than one, even with 8 ohm loads.
for a rather cooler operation for a long time. are these devices prefered for the project? if so then , go on. force cooling is also a must.

1st January 2005, 04:30 AM	#1
demogorgon diyAudio Member Join Date: Jul 2004 Location: Behind you.	what can i substitute the MJL4302A and the MJL4281A with? Hi! im currently ordering all the parts im gonna need for building the ESP P3a amp. unfortunatly i'm not getting a hold of the MJL4302 end MJL4281A, or the suggested repalcements 2SA1216 and 2SC2922. im gonna place the order shortly, but need a replacement! i'm thinking about going for the BUW12 and its PNP complimentary.. I'm really hoping it's possible to just swap trnsistors, but offcours it isn't.. any sugestions? regards a overly tierd marius

1st January 2005, 05:04 AM	#5
li_gangyi diyAudio Member Join Date: Jun 2003 Location: Woodlands Circle	dun use the 3055s and 2955s...they wun be as good...get the original parts from Onsemi... www.onsemi.com __________________ Kids in the back seat cause accidents...Accidents in the back seat cause kids...

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1st January 2005, 04:39 AM	#2
hienrich diyAudio Member Join Date: Dec 2004 Location: City of Gentle People	MJL21194/MJL21193 MJ15003/MJ15004 MJL21196/MJL21195 I GUESS THIS THINGS MIGHT WORK.

1st January 2005, 04:46 AM	#3
demogorgon diyAudio Member Join Date: Jul 2004 Location: Behind you.	Hi Hienrich! thanks for helping out! unfortunatly the place i'm ordering from dont have'm.. any other transistor that you can think of? regards marius

1st January 2005, 04:55 AM	#4
demogorgon diyAudio Member Join Date: Jul 2004 Location: Behind you.	well, i really have to order now, so i went for the original project 3 output devices. the MJE 2955T\3055T I'l order the others in time i guess, when i can get them. regards marius

1st January 2005, 05:07 AM	#6
hienrich diyAudio Member Join Date: Dec 2004 Location: City of Gentle People	i thinhk li_gangyi's right he thinks what i think. before what i think!!!!

1st January 2005, 05:09 AM	#7
demogorgon diyAudio Member Join Date: Jul 2004 Location: Behind you.	Can't.. you have to pay shipment for samples right? and then you have to use a visa, and i'm 17, so i dont have a visa.. guess i'l wait untill this summer when i turn 18 with getting the original parts from on-semi. -marius

1st January 2005, 05:16 AM	#8
hienrich diyAudio Member Join Date: Dec 2004 Location: City of Gentle People	by the way what devices are now at you hands. if you think that you in doubt with that just try to look for its specs in the net.

1st January 2005, 05:21 AM	#10
hienrich diyAudio Member Join Date: Dec 2004 Location: City of Gentle People	yes, it good to have two pairs than one, even with 8 ohm loads. for a rather cooler operation for a long time. are these devices prefered for the project? if so then , go on. force cooling is also a must.

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