Power transistors

Josip_Del · 6th January 2011, 07:55 AM

Are these transistors any good? For example SymAsym, etc…
http://www.semelab-tt.com/pdf/bipola...20MG6331-R.pdf
http://www.semelab-tt.com/pdf/bipola...20MG9411-R.pdf

AndrewT · 6th January 2011, 09:47 AM

the spec reads as good.
SOA 3Adc @ 100Vce is indeed mighty.
I wouldn't class it as 60MHz fT more like 40 to 50MHz, comparable to other manufacturers.

Probably worth trying a complementary pair of samples and report to us and Semelab.

CBS240 · 6th January 2011, 10:16 AM

Pretty hefty BJT's. Competitive.

A nice beefy driver stage might be in order to maximize potential for these.

tommy1000 · 10th December 2011, 10:11 AM

Does anyone have a SPICE model for the MG6331 transistor?
Thanks

djk · 01:35 AM

SEMELAB|MG6331-R|TRANS,AUDIO,NPN,260V,18A,TO-3P | Newark.com

"SOA 3Adc @ 100Vce is indeed mighty."

SOA is only 1A at 100V.

http://www.farnell.com/datasheets/866305.pdf

mt490 · 12th December 2011, 01:54 AM

The specs for the semelab and magnatec brand transistors seem to be very different despite the similarities of the part numbers and parent company.

djk · 12th December 2011, 02:30 AM

This is the highest SOA device in plastic I have ever seen:

http://www.onsemi.com/pub_link/Colla...MJL21195-D.PDF

AndrewT · 12th December 2011, 09:24 AM

Quote:

Originally Posted by djk

SOA is only 1A at 100V.

http://www.farnell.com/datasheets/866305.pdf

and the datasheet shows the knee in the SOA plot @ ~2.5A and 60Vce. giving 150W dissipation. Clearly not a 300W device.

Pingrs · 12th December 2011, 11:31 AM

Quote:

Originally Posted by AndrewT

and the datasheet shows the knee in the SOA plot @ ~2.5A and 60Vce. giving 150W dissipation. Clearly not a 300W device.

The OP’s data sheet (doc 9096) reads ~2.3A at 140V. The Farnell one (doc 8684) is odd- nine divisions/decade on the log/log graph? So which do you trust?

Brian.

tommy1000 · 12th December 2011, 11:40 AM

These are the most powerfull I have found in plastic, MG6333 and MG6332:
http://www.farnell.com/datasheets/866313.pdf
http://www.farnell.com/datasheets/866312.pdf
But the Cob is 800 pF!

6th January 2011, 07:55 AM	#1
Josip_Del diyAudio Member Join Date: Aug 2009	Power transistors Are these transistors any good? For example SymAsym, etc… http://www.semelab-tt.com/pdf/bipola...20MG6331-R.pdf http://www.semelab-tt.com/pdf/bipola...20MG9411-R.pdf

6th January 2011, 09:47 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	the spec reads as good. SOA 3Adc @ 100Vce is indeed mighty. I wouldn't class it as 60MHz fT more like 40 to 50MHz, comparable to other manufacturers. Probably worth trying a complementary pair of samples and report to us and Semelab. __________________ regards Andrew T.

6th January 2011, 10:16 AM	#3
CBS240 diyAudio Member Join Date: Aug 2005 Location: K-town	Pretty hefty BJT's. Competitive. A nice beefy driver stage might be in order to maximize potential for these. __________________ All the trouble I've ever been in started out as fun......

12th December 2011, 01:30 AM	#5
djk diyAudio Member Join Date: Feb 2001 Location: USA	SEMELAB\|MG6331-R\|TRANS,AUDIO,NPN,260V,18A,TO-3P \| Newark.com "SOA 3Adc @ 100Vce is indeed mighty." SOA is only 1A at 100V. http://www.farnell.com/datasheets/866305.pdf __________________ Candidates for the Darwin Award should not read this author. Last edited by djk; 12th December 2011 at 01:35 AM.

12th December 2011, 02:30 AM	#7
djk diyAudio Member Join Date: Feb 2001 Location: USA	This is the highest SOA device in plastic I have ever seen: http://www.onsemi.com/pub_link/Colla...MJL21195-D.PDF __________________ Candidates for the Darwin Award should not read this author.


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10th December 2011, 10:11 AM	#4
tommy1000 diyAudio Member Join Date: Mar 2008	Does anyone have a SPICE model for the MG6331 transistor? Thanks

12th December 2011, 01:54 AM	#6
mt490 diyAudio Member Join Date: Jun 2010	The specs for the semelab and magnatec brand transistors seem to be very different despite the similarities of the part numbers and parent company.

12th December 2011, 11:40 AM	#10
tommy1000 diyAudio Member Join Date: Mar 2008	These are the most powerfull I have found in plastic, MG6333 and MG6332: http://www.farnell.com/datasheets/866313.pdf http://www.farnell.com/datasheets/866312.pdf But the Cob is 800 pF!

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