Audio (Lateral) MOSFET's for Class AB - Overview, P-Spice URL's

[NickKUK]

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* BUZ901D VDMOS copyright Daniel Audio April 16, 2013
.model BUZ901D VDMOS(nchan Vto=0.473 Kp=1.585 Lambda=0.092 Rs=0.41 Rd=0.58 Rds=1e6 Cgdmax=100p Cgdmin=10.5p a=0.25 Cgs=400p Cjo=1000p m=0.5 VJ=0.7 IS=1.0E-32 N=50)
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* BUZ906D VDMOS copyright Daniel Audio April 16, 2013
.model BUZ906D VDMOS(pchan Vto=-0.426 Kp=0.673 Lambda=0.073 Rs=0.342 Rd=0.523 Rds=1e6 Cgdmax=215p Cgdmin=15.2p a=0.25 Cgs=696p Cjo=1450p m=0.377 VJ=0.446 IS=1.0E-32 N=50)

During the A220 fix I found these spice models for the BUZ901/906. Not much use nowadays..

 

[TurvenuijaFIN]

Is there any straight replacement for sanken MLE20/MJD20 fets?

 

[vilfort]

A quick look at the datasheet and you may get lucky using Vishay IRFP240 & IRFP9240 MOSFETs - but you may have to work on BIAS voltages here. I have never played with the MLE20/MJD20. The IRPs normally have a 3.6V gate bias voltage to idle at ~ 150mA at 60V. But each setup will vary. Swapping MOSFETs always has extra work associated with it.