Output Mosfets

[Diogo]

Anyone can suggest me good and cheap mosfets to use as audio output devices, suitable for paralelling, with a complementary pair if possible ( N = - P). I just give it up on using the IRF640.
TO-3 and TO-220 types are better for me, I just don't have any TO-3P heatsink, and have lots of TO-220 and TO-3.

I really apreciate any help!

 

[G]

Try Hitachi 2SK216's and 2SJ79's. I beleive that they can be had for a good price at MCM Electronics.

 

[peranders]

I have a box of 2SJ50 and 2SK135 (37 pairs) for sale, not cheap though...

I have also IRF ??? 8A, 200 V in TO-3, both N- and P-channel. They are new and never used. 4 pcs of each.

 

[Diogo]

Ok, A little bit more specific:
I'm looking for something like 7 to 15 amps, and quality is not the 1rst requirement, I just want to try make it work, and what is that TO-3 IRF?

And thanks for your help!

 

[peranders]

Are my parts IRF230/9230 maybe? Sounds familiar. Shall I dig them up?

 

[carlmart]

what is that TO-3 IRF?

IRF is the International Rectifier MOSFET family.

TO-3 is the metallic body type.


Carlos

 

[Diogo]

I was refering to what kind of IRf's
IRF230
IRFP240
IRF532
IRF640, there is many kinds of IRF's......
But thanks anyway carlmart.

 

[Diogo]

I can't find any IRF230 datasheet, and can't find it for sale here in São Paulo/Brasil. Can you e-mail me the datasheet peranders?

 

[peranders]

Re: what is that TO-3 IRF?

IRF is the International Rectifier MOSFET family.

Or Harris....

TO-3 is the metallic body type.

TO = Transistor Outline

Datasheets

http://ec.irf.com/ec/adirect/ir?cmd=search&query=IRF230

http://ec.irf.com/ec/adirect/ir?cmd=search&query=IRF9230

 

[Luke]

HI Peranders,

I have a few 2SJ50 and 2SK135 as well, do you know of any good circuits for future reference that uses these?

 

[joensd]

Hi luke,
Following the link you´ll find schematic with these fet´s:
http://www.mif.pg.gda.pl/homepages/tom/files/70MOS.gif
I´m not sure but i think it´s the mini-crescendo from Elektor.

 

[trwh]

Luke, I posted a schematic on this thread:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=5831

that uses 2SJ50 and 2SK135 transistors in the output stage.

 

[Luke]

thanks for the schematics

 

[promitheus]

the 2sj50 and 2sk135 come out only in TO-3 metal case and are very expensive. There are equivelant MOsFETs from Hitachi in TO-3P plastic case which I used once and are at the same ratings as the above. I don´t remember their code.
2SJ612 ans 2SK1058 but I could be wrong.

At very cheaper price you can get the IRF or IRFP from International rectifier Or even cheaper from Harris.
The most famous are IRFP240, IRFP250 and the IRFP9240 and IRFP9250.

But have a different pin lay out then the Hitachi.

 

[joensd]

The code for the lateral mosfets is 2SK1058 and 2SJ162.
They are some of the more easy to get mosfets.
But you can also use "direct" substitutes from exicon in TO3-case.
For 2SK135/2SJ50 they would be ECF10N16/ECF10P16.

 

[promitheus]

I new I had it wrong...
thanks for the correction.
are these exicon easy to find in Germany ?

 

[Christer]

You might find the following link helpful if you have difficulties
obtaining the Exicon devices. You can order online at very
good prices for the plastic versions. I suppose TO3 will be
more expensive.

http://www.profusionplc.com/hitachi.htm

 

[promitheus]

Thanks for the link.
I will check it out.