bipolar (bjt) transistor families for audio power output stages - Page 79

tiefbassuebertr · 9th May 2011, 08:22 AM

From which of these listed types is expected, that they are also over a longer period of time available (at least for several years) and not obsolete respectively only available as cloned version ??

tiefbassuebertr · 9th October 2011, 10:25 AM

Quote:

Originally Posted by tiefbassuebertr

From which of these listed types (about post #1) is expected, that they are also over a longer period of time available (at least for several years) and not obsolete respectively only available as cloned version ??

No comments?

blmn · 9th October 2011, 12:06 PM

Well,

English is not my native language, but, considering that I understood the question, I suppose the family 1302/3281 and their improved new units must be in production for a long time.

Regards

tiefbassuebertr · 27th November 2011, 05:01 PM

I am looking for new launched BjT power devices for audio output buffer and general purpose applications.
What's currently new?

homemodder · 01:18 PM

Sanken 2SA2223/2SC6145, besides excellent parameters, look at the excellent SOA obtained from TO 3P package.

IMHO, Sanken is still the best BJT power transistor manufacturer and if you buy from certain vendors you could get prices even or better than ONSEMI.

tiefbassuebertr · 28th November 2011, 01:57 PM

Quote:

Originally Posted by homemodder

Sanken 2SA2223/2SC6145, besides excellent parameters, look at the excellent SOA obtained from TO 3P package.

IMHO, Sanken is still the best BJT power transistor manufacturer and if you buy from certain vendors you could get prices even or better than ONSEMI.

The main disadvantage for me by Sanken's (and Toshiba's) power BjT devices is the fact, that there are a lot of counterfeits on the marked, often very difficult to distinguish from the genuine/original versions - go to
Counterfeit Transistors
I have heard, that this risk by brands like Fairchild, ROHM and ST is significantly lower.

tiefbassuebertr · 03:23 PM

dawsoo · 11th December 2011, 05:56 PM

Quote:

Originally Posted by tiefbassuebertr

jinma: Thank you for this advice

No; - go to
??????????? Audio????: TTA1943, TTC5200????????? ?????????
to see the differences
datasheets in english are also available there.
http://www.semicon.toshiba.co.jp/doc...eet_090713.pdf
http://www.semicon.toshiba.co.jp/doc...eet_090713.pdf

TTA1943/TTC5200 vs 2SC1943/2SC5200

Compare Cob!!! 220/140pF vs 360/220pF ... Soa beta , and other is same

tiefbassuebertr · 28th December 2012, 09:44 AM

Quote:

Originally Posted by tiefbassuebertr

Are there really no books, application notes and literature about various emitter structures in Audio power bipolare junction transistors?

Are there any news?

tommy1000 · 28th December 2012, 02:01 PM

Quote:

Originally Posted by tiefbassuebertr

Are there any news?

Power transistors have their emitters and bases interleaved as narrow fingers. This is necessary to prevent “current crowding” and consequent “second break down”. In addition multiple emitter structure also reduces parasitic ohmic resistance in the base current path.

From what I understand each semiconductor manufacturer have there own
proprietary design to solve this.

28th November 2011, 01:15 PM	#785
homemodder Account disabled at member's request Join Date: May 2006	Sanken 2SA2223/2SC6145, besides excellent parameters, look at the excellent SOA obtained from TO 3P package. IMHO, Sanken is still the best BJT power transistor manufacturer and if you buy from certain vendors you could get prices even or better than ONSEMI. Last edited by homemodder; 28th November 2011 at 01:18 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Output transistor power dissipation.	nigelwright7557	Solid State	11	26th May 2008 01:55 PM
Power horizontal deflection transistors work fine in output stages ?	aldovan	Solid State	7	31st August 2007 01:31 PM
sziklai-darlington diamond buffer (SDDB) for power output stages	mtlin12	Solid State	5	1st April 2005 06:55 AM
power transistor output capacitance	hienrich	Solid State	3	26th December 2004 07:18 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

9th May 2011, 08:22 AM	#781
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	From which of these listed types is expected, that they are also over a longer period of time available (at least for several years) and not obsolete respectively only available as cloned version ??

9th October 2011, 12:06 PM	#783
blmn diyAudio Member Join Date: Feb 2001 Location: .	Well, English is not my native language, but, considering that I understood the question, I suppose the family 1302/3281 and their improved new units must be in production for a long time. Regards

27th November 2011, 05:01 PM	#784
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	I am looking for new launched BjT power devices for audio output buffer and general purpose applications. What's currently new?