who knows this transistor? - 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 23rd February 2007, 11:48 AM   #1
d.O.LF is offline d.O.LF  Belgium
diyAudio Member
 
Join Date: Feb 2007
Location: gent
Default who knows this transistor?

Hi all,


I have here a transistor where I know nothing about. The only thing I know that it is a PNP transistor.
Here's what's written on it:
SK
A957
170

I searched the web about this transistor but couldn't find anything. I hope maybe someone could give me more information about this transistor cause I would like to simulate the schematic where it's in in LTSPice....


Thank You!

dolf
  Reply With Quote
Old 23rd February 2007, 11:54 AM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Well, well...a neighbor.

A957 is 2SA957. Googling for the datasheet will be successful, don't know if a spice model can be found.

/Hugo - from Evergem
  Reply With Quote
Old 23rd February 2007, 11:54 AM   #3
roender is offline roender  Romania
diyAudio Member
 
roender's Avatar
 
Join Date: Sep 2006
2sa957, PNP audio driver, Vceo 150V, Ic 2A, Pc 30W, Ft 20Mhz
  Reply With Quote
Old 23rd February 2007, 12:02 PM   #4
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
The SK means it an original Sanken device, not 2d production.
A similar SK/SKN device is the 2SA1668.
__________________
2015 : World Cup Cat Hacky Sack
  Reply With Quote
Old 23rd February 2007, 05:13 PM   #5
d.O.LF is offline d.O.LF  Belgium
diyAudio Member
 
Join Date: Feb 2007
Location: gent
Thank you very much!

I have found the datasheet (http://www.tranzistoare.ro/datasheets2/41/41160_1.pdf) and I'm wandering how I can transform this to Spice parameters.

I have found this program called spicemod to do this:
http://www.intusoft.com/spicemod.htm
But I can't seem to download it anywhere, does someone know a similar program?

Greetz,
dolf

@Netlist: If you live near Gent, do you know KAHO St.Lieven?
  Reply With Quote
Old 23rd February 2007, 05:18 PM   #6
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Dolfje Weerwolfje,

that's the datasheet of the Korean version of the 2SA957.
__________________
2015 : World Cup Cat Hacky Sack
  Reply With Quote
Old 23rd February 2007, 05:41 PM   #7
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Dolf,
Making a model from a good datasheet is possible but you'll need the more qualified people around here.

Yes I know both campuses but I'm not familiar with their students.

/Hugo
  Reply With Quote
Old 23rd February 2007, 05:55 PM   #8
d.O.LF is offline d.O.LF  Belgium
diyAudio Member
 
Join Date: Feb 2007
Location: gent
Quote:
Originally posted by jacco vermeulen
that's the datasheet of the Korean version of the 2SA957.
Does that make any difference for the transistor parameters?
  Reply With Quote
Old 25th February 2007, 08:25 AM   #9
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
No, 2SA957 is 2SA957.

/Hugo
  Reply With Quote
Old 25th February 2007, 11:28 AM   #10
d.O.LF is offline d.O.LF  Belgium
diyAudio Member
 
Join Date: Feb 2007
Location: gent
Since I couldn't get my hand on a spice model for the 2SA957, I looked for a model of the MJE15031 which according to what I've found could also do the job.

Hope it won't make a big difference.

Thank you very much for all the replies though!

@Netlist: I'm doing my thesis there and this simulation was part of my work to achieve my goal.
  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
Can bias transistor mount on top(body) of output transistor?? Leolabs Solid State 23 16th February 2008 12:35 AM
Transistor Id glen65 Solid State 13 4th March 2006 10:31 PM
503 transistor dazling69 Solid State 5 18th September 2005 09:03 PM
Best Transistor? samsagaz Solid State 13 18th October 2004 09:22 AM
Transistor ID EchoWars Solid State 6 24th January 2004 12:45 PM


New To Site? Need Help?

All times are GMT. The time now is 03:17 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