Are these switchers suitable for SMPS?

[Pentium4]

In the datasheet: http://te-epc-lpc.web.cern.ch/te-epc...0MOSFET_ST.pdf it says "High voltage NPN power transistor for standard definition CRT display" May be a stupid question, but is this what it was specifically designed for? Or would these be a good option for upgrading 13009's? Thanks

[tom66]

Re: Are these switchers suitable for SMPS?

They are designed for 15kHz flyback application with high off-state breakdown but relatively slow speed and low cost. Might work, but not intended for that application.

[senz_90]

Re: Are these switchers suitable for SMPS?

try it with ammeter in series with mains voltage. i am curious too! ! if this work maybe i would upgrade my cheap ass psu which has 13007. but aware when the amps goes high slowly and this looks like not applicable.

[momaka]

Re: Are these switchers suitable for SMPS?

I *think* they will work.
Data sheet shows a test where the transistors are running at 64 KHz and 1.6 uH inductive load. I'm not sure what the inductance of a PSU main transformer is, though, nor if running them at this high of a frequency would mean that you have to de-rate their specs. But try it and see. Just make sure to use the light bulb trick so parts don't go
If you want to try it with a more significant load but still don't want to plug it straight into the wall, use a portable heater, a toaster, coffee maker, toaster oven, or something similar rated in the range of around 400-600W or so. This should limit the current if something does go *poof* so at least your fuse won't blow.