RM KL 203 Transistors

[Ashtec]

Yep IRF520N's work but they do run a bit hotter!!!!!!!

Hi,
Is the IRF 520N PIN OUT THE SAME AS THE MOS RM3 DEVICE AS I NEED TO CHANGE ALL FOUR
all short circuit
thanks
jim

Yep the same mate...........

[jimtylee]

Okay thanks
I bought 4 irf 520n unmarked on ebay but after fitting them my power out was only 30 watts instead of as before 80 ish watts i guess there are low grade ones out there...have now ordered 4 new ones by international rectifier company hope these will be okay when fitted....
jim.............

[cfcclive]

Hi guys I have the same problem I think! No power output preamp still functioning but as soon as amp on no power output! Changed for 520n's then?

[RayOK]

Just fixed mine up today with IRF520's, runs very nice, but needed some work to BIAS... Check out here for pics and description...

https://www.facebook.com/media/set/?set ... 68e964121a

[listner132]

I have also changed the fets from the origonal rm3 fet i have tried both fqp13n10,s and also irf520's both replacments work ok but the power is about 30 watts less that what it was with its origonal fets..