Hi,
I just recently came across SiC FETs from UnitedSIC. These SIC FET devices consist of a Si MOSFET with an embedded SIC JFET in a cascode configuration. I found these might be an interesting alternative for single ended class A voltage amplification stages. I typically use an IRF610 or IRFBF30 as MOSFET with a separate JFET or MOSFET for cascoding.
Anyone who have experiences in this direction or any comments to my idea?
/Anders
I just recently came across SiC FETs from UnitedSIC. These SIC FET devices consist of a Si MOSFET with an embedded SIC JFET in a cascode configuration. I found these might be an interesting alternative for single ended class A voltage amplification stages. I typically use an IRF610 or IRFBF30 as MOSFET with a separate JFET or MOSFET for cascoding.
Anyone who have experiences in this direction or any comments to my idea?
/Anders
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Website:
United Silicon Carbide Inc. SiC FETs Archives - United Silicon Carbide Inc.
And a device as an example,
https://unitedsic.com/datasheets/DS_UF3C065080T3S.pdf
I just did a spice simulation with one if the SIC Fet devices in a circuit I have and it shows good linearity as well as good HF performance.
United Silicon Carbide Inc. SiC FETs Archives - United Silicon Carbide Inc.
And a device as an example,
https://unitedsic.com/datasheets/DS_UF3C065080T3S.pdf
I just did a spice simulation with one if the SIC Fet devices in a circuit I have and it shows good linearity as well as good HF performance.
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Joined 2009
Paid Member
where we will have some interest is in capacitances - this is where we want to see if these parts are suitable for us. At low voltages SiC usually does poorly. For tube amplifiers where voltages are high we are happier.
For a solid state amp using one of these devices as an output power device, as a source follower, they don't look too attractive to me because you have to give up 20V across drain-source to use them - a common limitation for a cascode. I think it has more promise for high voltage tube / valve amplifiers.
For a solid state amp using one of these devices as an output power device, as a source follower, they don't look too attractive to me because you have to give up 20V across drain-source to use them - a common limitation for a cascode. I think it has more promise for high voltage tube / valve amplifiers.
