Fairchild Mosfets for Aleph?

[ppereira]

Hi, woud this be a suitable replacement for the IRF mosfets?

http://www.fairchildsemi.com/ds/FQ/FQH44N10.pdf

Thanks

 

[MikeW]

Should work OK with rail under 50 volts.

 

[Nelson Pass]

As I understand it, Fairchild, a subsidary of National
Semiconductor, purchased Samsung's power Mosfet fab facility in
Korea with staff and who knows what else.

We use Fairchild parts and like them very much, but I have to
say that the 9610's we got from Samsung did not work out for
us.

Where this will put Fairchild product in the future is anybody's
guess, but I'll let you know if anything develops.

😎

 

[ppereira]

Thanks Nelson and Mike,

Paul

 

[ppereira]

The specs looked great and I thought I was on to something but after doing a search the only distributor that even lists them is Newark and they have a lead time of 262 days and a minimum order of 450...

 

[Nelson Pass]

The Harris 9610 is available as far as I know, and is about
as good.

 

[ppereira]

Nelson, I apologize for not explaining this earlier, these are actually power mosfets in a TO-247 package.

Quick Specs:

48A, 100V, RDS(on) = 0.039W @VGS = 10V
Low gate charge (typical 48 nC)
Low Crss (typical 85 pF)
Fast switching
100% avalanche tested
Improved dv/dt capability
175°C maximum junction temperature rating


Thanks,
Paul

 

[MikeW]

FQA19N20

I have some FQA19N20's. Four new and 8 that I swapped out of another amp. The VGS is 4.9-5.1, to high for my Mini-A's. If you want them send me an E-mail.

 

[Nelson Pass]

Hi, woud this be a suitable replacement for the IRF mosfets?

http://www.fairchildsemi.com/ds/FQ/FQH44N10.pdf

Thanks

5 amps bias at about 20 V idle. Sweet.

😎

BTW, Where do you get all these transistors, Mike?

 

[john-china]

Re: Re: Fairchild Mosfets for Aleph?

quote :"5 amps bias at about 20 V idle,sweet"
what does this mean?

i think one mosfet can not bear 5A*20V=100w.

Mr. Pass, would you please tell me detail information inside?

 

[Nelson Pass]

Looking at the curves, I think you could make a pretty
linear little amp at that operating point. I would like
10 amps, but I wouldn't dare to try it. The 20V implies
something like a Zen circuit with a 40 volt rail, and you
could expect maybe 20 watts output. The 180 watt
chip would certainly need all the cooling you could throw
at it, and it might not last too long, but I bet it would
sound great while it did.

😎

 

[MikeW]

Re: Re: Fairchild Mosfets for Aleph?

5 amps bias at about 20 V idle. Sweet.

😎

BTW, Where do you get all these transistors, Mike?

I bought 25 of these. Did you find a use for the 515 Watters?

 

[Nelson Pass]

I had a data sheet, and then I lost it and
can't find it on the net. 😡

 

[MikeW]

Here is the link

http://www.fairchildsemi.com/pf/HU/HUF75652G3.html

I sent it, but sometimes they don't download very well.