Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Best TIP42 for audio
Best TIP42 for audio
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
Reply
 
Thread Tools Search this Thread
Old 25th March 2020, 01:38 PM   #1
altec9440 is offline altec9440  France
diyAudio Member
 
Join Date: Oct 2019
Question Best TIP42 for audio

Mouser offer STMicroelectronics & ON Semiconductor sourcing of TIP42C.

Two high quality brands but any preference for audio use ?
  Reply With Quote
Old 25th March 2020, 02:25 PM   #2
Kay Pirinha is offline Kay Pirinha  Germany
diyAudio Member
 
Kay Pirinha's Avatar
 
Join Date: Oct 2011
Location: Somewhere in Germany
A TIP42C is a TIP42C is a TIP42C - and is also a BD244C. You can buy them from any reputable manufacturer without issues.
Anyway, there are much better devices for audio purpose nowadays than these ancient TI ones.
Best regards!
__________________
"I spent a lot of money on booze, birds and fast cars. The rest I just squandered." (George Best)
  Reply With Quote
Old 25th March 2020, 04:48 PM   #3
altec9440 is offline altec9440  France
diyAudio Member
 
Join Date: Oct 2019
Quote:
Originally Posted by Kay Pirinha View Post
Anyway, there are much better devices for audio purpose nowadays than these ancient TI ones.
thanks for answer. Is it the same for opamp : do I avoid NE5534 from TI ?
  Reply With Quote
Old 25th March 2020, 07:03 PM   #4
Kay Pirinha is offline Kay Pirinha  Germany
diyAudio Member
 
Kay Pirinha's Avatar
 
Join Date: Oct 2011
Location: Somewhere in Germany
I don't have too much experience with these. Others say that Signetics or Philips parts are superior over TI's, but I can't complain on TI 5532's - besides a single one that oviously was defective and oscillated badly, where others (also by TI) didn't.
Best regards!
__________________
"I spent a lot of money on booze, birds and fast cars. The rest I just squandered." (George Best)
  Reply With Quote
Old 25th March 2020, 07:30 PM   #5
indianajo is offline indianajo  United States
diyAudio Member
 
indianajo's Avatar
 
Join Date: Jan 2010
Location: Jeffersonville, Indiana USA
I've got TIP42c from Fairchild before On semi bought them. Ft is only 3 mhz, muddy up the highs some when used as VAS or drivers. Would be okay for output emitter follower transistors on 30W amps I suppose. What has cleaner highs as driver in the same circuit (AX6) is MJE15029, with 30 mhz Ft. Top octave solo piano & tinkly bells is where I hear the difference, but I've got 14 khz ear response.
__________________
Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,1.3K, SP2-XT's, T-300 HF Proj's, Steinway console, Herald RA88a mixer, Wurlitzer 4500, 4300
  Reply With Quote
Old 25th March 2020, 09:40 PM   #6
Mark Tillotson is offline Mark Tillotson
diyAudio Member
 
Join Date: May 2018
Location: Cambridge UK
Quote:
Originally Posted by altec9440 View Post
thanks for answer. Is it the same for opamp : do I avoid NE5534 from TI ?

The non-TI one's are slightly lower distortion at HF, the TI ones have the distortion starting to rise a bit more from 5kHz and up IIRC. The effect is measurable with an Analog Precision, according to Doug Self.
  Reply With Quote
Old 26th March 2020, 01:45 AM   #7
Monte McGuire is offline Monte McGuire
diyAudio Member
 
Join Date: Jul 2013
Best TIP42 for audio
The New Japan Radio versions seem to be the nicest (e.g. lowest distortion). This would be the NJM5532D and the selected version NJM5532DD in the DIP-8 package. I think they gave up on the single 5534 version though.

Honestly though, an LM4562 beats the daylights out of a 5532, and is very inexpensive too.

Single ICs to replace a 5534 will be tougher to find now. The only time singles get made now are when the idle dissipation for one amplifier is on the high side, making a dual harder to use.
  Reply With Quote
Old 26th March 2020, 06:47 AM   #8
altec9440 is offline altec9440  France
diyAudio Member
 
Join Date: Oct 2019
Quote:
Originally Posted by Mark Tillotson View Post
The non-TI one's are slightly lower distortion at HF, the TI ones have the distortion starting to rise a bit more from 5kHz and up IIRC. The effect is measurable with an Analog Precision, according to Doug Self.
Are all parts affected ? I use SA5534A version.
  Reply With Quote
Old 26th March 2020, 07:55 AM   #9
Zung is offline Zung  Switzerland
diyAudio Member
 
Join Date: Apr 2005
Location: Geneva
Quote:
Originally Posted by Kay Pirinha View Post
A TIP42C is a TIP42C is a TIP42C...
NOT TRUE!!!

40 years ago, I measured the THD of a bunch of small signal transistors in a simple follower configuration, and they're all different: the more exoctic brands like Ferranti (now Zetex) the worst, the established American brands like Motorola in the middle, and the "classic" European brands like Philips the best. The results range from .009% to .2%.
Attached Images
File Type: jpg BJT follower distortion.jpg (311.9 KB, 102 views)
  Reply With Quote
Old 26th March 2020, 11:41 AM   #10
wg_ski is offline wg_ski  United States
diyAudio Member
 
Join Date: Oct 2007
You can see a lot of variation in small signal transistors because different manufacturers will be using different processes and different die layouts to make the ‘same transistor’. They meet the same data sheet specs, but things that affect distortion and perhaps noise can be quite different. The TIPs are generic power transistors with fairly loose specs. You will see differences between brands, but they are not likely to matter in the application. And they will all be using similar cheap and dirty epitaxial base processes, with similar die sizes to meet the Rth spec. You’re always going to get high and variable (with respect to Vce) output capacitance, and a beta that falls off to the low tens at rated current. What happens at low current is anybody’s guess - and if that is important to you get different makes and measure them. But since the spec is so loose, don’t expect miracles in matching from batch to batch.
  Reply With Quote

Reply


Best TIP42 for audioHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to distinguish counterfeit TIP41 and Tip42 from the genuine? agentgates Parts 16 11th May 2016 01:58 AM
ST TIP41 / TIP42 DATASHEET ANOMALY? gasboss775 Parts 2 24th February 2015 09:25 PM
Simple high quality audio amp using tip41 & tip42 rrbadrike PA Systems 6 15th December 2013 11:10 AM
Problem with tda2030a+tip41/tip42 120w amp rrbadrike Solid State 6 1st April 2012 10:20 AM
Transistors: D1047,TIP42 -> pinout ? ghg Parts 4 18th August 2011 05:34 AM


New To Site? Need Help?

All times are GMT. The time now is 04:48 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki