new SiC JFETs?

[2 picoDumbs]

I think if you order half tube quantity for instance they cut the tube physically in half so you still have a good chance of getting similar devices. If you order 2 or 3 you might get the leftovers from the bottom of the bin.

I'll send them an email.
Thanks for the tip

 

[2 picoDumbs]

​

C2M0280120D Looks good too

 

[mikegranger]

​

C2M0280120D Looks good too

That's the part that I ordered four pieces of to compare with.

 

[2 picoDumbs]

That's the part that I ordered four pieces of to compare with.

I might get half a tube of each

 

[aspringv]

C2M0280120D is the one I was tempted by - higher transconductance...

 

[2 picoDumbs]

C2M0280120D is the one I was tempted by - higher transconductance...

Buy both, assuming it's within your budget

 

[2 picoDumbs]

C2M1000170Dlook more stable to temperature rise than IRFP240. Should make biasing simpler.

 

[2 picoDumbs]

If anyone is interested, I have spice models.

 

[Zen Mod]

feel free to click them here

 

[hazard500]

Cree C2M technology is so last year. Check out the next gen C3M. Its only rated at 900volts, but transconductance is 13 and Pd is 125 watts. I can't figure out what advances have been made going from C2M to C3M.

900-V SiC MOSFET | Cree Power converter

 

[wrenchone]

The 900V Cree SiC fets look like they won't be hitting distributors until October or so. Digi-Key shows Cree 1200V devices, Rohm (cheaper), ST, and Microsemi (both these vendors are pricey).

Mouser may have the Panasonic devices by now - I'll check and see.

 

[2 picoDumbs]

Couldn't imagine Philips/ST or Panasonic devices being cheaper than Cree but if so that would be good news.

 

[stefanobilliani]

Can someone post a circuit to try the real Cree transistor.... I have 4 of them, did put some to a zen-like circuit but had lots of noise at the output... any help?

 

[kasey197]

Based on the datasheet, the two cree parts mentioned need quite a lot of volts to bias up, so it may not work well as a drop-in replacement for a typical IRF240 circuit - did you you manage to bias up the transistor ?

Which cree part did you try and what was the circuit used ?

 

[2 picoDumbs]

Can someone post a circuit to try the real Cree transistor.... I have 4 of them, did put some to a zen-like circuit but had lots of noise at the output... any help?

Which Cree device device do you have?

 

[stefanobilliani]

I have the C2M1000170D. the circuit was a typical zen lite with bulbs load. Vdd around 45 volt. I did try to bias with positive or negative vgs.... some how it did bias up... but plenty of noise and if i remember correctly there was also plenty of gain...

 

[2 picoDumbs]

You will need Vgs of somewhere between 7V and 8V.
Is that enough information to get you started?

Do you have a gate resistor?

 

[stefanobilliani]

You will need Vgs of somewhere between 7V and 8V.
Is that enough information to get you started?

Do you have a gate resistor?

yes, gate resistor Always.
okay thank you will try again soon

 

[2 picoDumbs]

What value gate resistor?
You might need to increase it to maintain stability. You will probably need a higher value than what Nelson normally uses on IRFP240. As a guess, 3 times as large

 

[stefanobilliani]

What value gate resistor?
You might need to increase it to maintain stability. You will probably need a higher value than what Nelson normally uses on IRFP240. As a guess, 3 times as large

okay i'll use 1k.