MJL3281 / MJW3281 differences? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 4th April 2008, 09:59 PM   #1
gmikol is offline gmikol  United States
diyAudio Member
 
Join Date: Oct 2005
Location: Vancouver, WA
Default MJL3281 / MJW3281 differences?

Other than the physical dimensions of the case?

Looking at the data sheets, I don't see any other difference. Even the Theta-JC's are the same, although, intuitively, I would think the TO-264 package should have a lower thermal resistance.

So all you experts out there, is there any difference?

The MJW's are $0.51 cheaper per piece in small quantities, so if there's no real benefit to the MJL's, I'd rather save a little bit.

--Greg
  Reply With Quote
Old 5th April 2008, 09:33 AM   #2
MikeB is offline MikeB  Germany
diyAudio Member
 
MikeB's Avatar
 
Join Date: Apr 2004
Location: GŁtersloh
Its the same transistor (die) in a different package. It has less metal plate to heat sink transfer. This means that the MJL has better cooling.

Mike
  Reply With Quote
Old 5th April 2008, 03:01 PM   #3
diyAudio Member
 
megajocke's Avatar
 
Join Date: Jan 2003
The JC-thermal resistance might be the same but the bigger case will have an advantage when it comes to case-sink theta, especially when using an insulator between.
  Reply With Quote
Old 5th April 2008, 03:05 PM   #4
diyAudio Member
 
Zero Cool's Avatar
 
Join Date: Sep 2004
Location: MN
I thought the W versions were a higher rated version???? the MPSA42/92 vs the MPSW 42/92 has the W version at twice the dissipation. i thought....
  Reply With Quote
Old 5th April 2008, 05:39 PM   #5
gmikol is offline gmikol  United States
diyAudio Member
 
Join Date: Oct 2005
Location: Vancouver, WA
Quote:
Originally posted by megajocke
The JC-thermal resistance might be the same but the bigger case will have an advantage when it comes to case-sink theta, especially when using an insulator between.
Well...if that isn't a forehead-slapper. This was the benefit I suspected must be there, but wasn't thinking about it in the right way. I'm all straightened out now.

Thanks--

Greg
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Differences between X0 and X0.2 rsbay Pass Labs 2 27th March 2010 04:40 PM
Differences between TMM and MTM configuration ttan98 Multi-Way 2 23rd March 2007 02:27 AM
Mjl3281 Soar Pingrs Solid State 7 9th March 2007 01:47 PM
MJL3281/1302 pinkmouse Parts 8 6th June 2003 06:31 PM
What is the differences between Richard Moon Multi-Way 2 23rd September 2002 01:46 PM


New To Site? Need Help?

All times are GMT. The time now is 09:25 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2