replacement for mje15003&4

tomes · 26th February 2010, 12:46 PM

Hi, need help from you all recomend which are the best tr to replace my old kit a class a amp which just use mje15003&mje15004 one each per channel. thank

HighTec · 02:03 PM

Hm, those transistors are way obsolete and hard to find their datasheet. I think they are 120-150V, 8A, 50W transistors but I'm not sure. Try to replace them with MJE15030/ MJE15031.

http://www.onsemi.com/pub_link/Colla...MJE15028-D.PDF

Edit: are you sure you read it right? Maybe it's MJ15003? Dunno.

alexcp · 26th February 2010, 02:25 PM

If that's MJ15003/4, they should still be available (ON Semi, for example, lists them as "Active" in the lead free version). A good replacement would be MJ21193/4 - they are more recent and said to have less Hfe "droop" at high collector current.

26th February 2010, 12:46 PM	#1
tomes diyAudio Member Join Date: Jun 2004 Location: pj	replacement for mje15003&4 Hi, need help from you all recomend which are the best tr to replace my old kit a class a amp which just use mje15003&mje15004 one each per channel. thank

26th February 2010, 01:58 PM	#2
HighTec diyAudio Member Join Date: Mar 2003 Location: Sibenik, Croatia	Hm, those transistors are way obsolete and hard to find their datasheet. I think they are 120-150V, 8A, 50W transistors but I'm not sure. Try to replace them with MJE15030/ MJE15031. http://www.onsemi.com/pub_link/Colla...MJE15028-D.PDF Edit: are you sure you read it right? Maybe it's MJ15003? Dunno. Last edited by HighTec; 26th February 2010 at 02:03 PM.

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26th February 2010, 02:25 PM	#3
alexcp diyAudio Member Join Date: Jun 2009 Location: Florida Blog Entries: 28	If that's MJ15003/4, they should still be available (ON Semi, for example, lists them as "Active" in the lead free version). A good replacement would be MJ21193/4 - they are more recent and said to have less Hfe "droop" at high collector current.

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