Does anyone know the difference between the AC128 and AC128K transistors?

Thanks in advance

they are the same except that the AC128k has a heatsink around it

To me it seems like a heat sink would be better, I wonder if that would help with the temperature flakyness of a Fuzz Face.  Do you think that the AC128K would have some other weird effect in a Fuzz Face?

Thanks again

I don't think that it has any effect except that it might be easier to solder.
What you shouldn't forget is that a heatsink isn't some kind of 'diode' which works only in one way - it work in both ways. If you have a very high 'outside' temperature a heasink makes it easier for the device to warm up... but this doesn't matter here.
I believe there will be no difference.

Jacques has some info about the AC128 at http://www.geocities.com/stompbox2001/ac128.htm

I have some for sale on Ebay at http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3701592621

regards, Jack

Hi,
For my part all the AC 128K i've bought are over the gain range to build good biaised Fuzz-Faces .They are all over 200Hfe ,i think it's because this models with heatsink are made for high-gain amplifier systems .
If you find some pieces with  right Hfe :why not ! :wink:
Regards
Bruno

"Do not forget to warm her up like a tube amp: germanium women will not give you their bodies unless you are a gentleman"
This is the funniest sentence I have read in ages!
Luke

Yeah thats funny !   And are silicon women less warm but tighter and maybe less prone to leakage. Sorry I couldn't resist that one.

Posts like that are going to make sure that we don't get any involvement from the very few women stompbox designers and builders that there are.

Please show greater respect.


-Peter

Hi,
I ever read this expression.
Is it  from  Jacques Stomboxes website?Be careful to mention his name !
It's a great man :wink:
Bruno

wtf?

Yeah- it IS from Jacques's website. I didnt know- I found that page through a google search. Sorry about the confusion though.
Luke