CRXF140M120G4Z CR Micro 1200V 14A SiC MOSFET TO-220F
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- 1200 V / 14 A continuous drain current, TO-220F package
- Rds(on) 175 mΩ typ, 225 mΩ max at VGS = 15 V
- Qg 31 nC and Ciss 522 pF
- N-channel silicon carbide, 4H-SiC
The CR Micro CRXF140M120G4Z is a 1200 V 14 A N-channel silicon carbide MOSFET in a TO-220F package. 175 mΩ typical at a 15 V gate drive (225 mΩ maximum); 140 mΩ typical at 18 V; Qg is 31 nC; VGS(th) 2 to 4 V.
Key Specifications
| Drain-Source Voltage (VDS) | 1200 V |
| Continuous Drain Current (ID) | 14 A |
| Rds(on) @ VGS = 15 V, typ. | 175 mΩ |
| Rds(on) @ VGS = 15 V, max. | 225 mΩ |
| Rds(on) @ VGS = 18 V, typ. | 140 mΩ |
| Rds(on) @ VGS = 18 V, max. | 180 mΩ |
| Gate Threshold Voltage (VGS(th)) | 2 – 4 V |
| Total Gate Charge (Qg) | 31 nC |
| Input Capacitance (Ciss) | 522 pF |
| Channel Polarity | N-channel |
| Package | TO-220F |
Process Technology
Silicon carbide has a critical field roughly ten times that of silicon, so the drift layer can be far thinner for the same blocking voltage. The result is a much lower specific on-resistance at 1200 V and above, and a breakdown voltage that barely moves with temperature. The trade-offs are a narrower gate window and a body diode that should not carry continuous third-quadrant current.
Applications
Solar inverters, three-phase motor drives, UPS, and railway auxiliary converters.
Selection Notes
- Silicon carbide holds a much flatter Rds(on) over temperature than silicon, but the gate window is narrow. Drive at 15–18 V on and a negative or zero volt off bias as the datasheet specifies.
- The body diode is not intended for continuous third-quadrant conduction. Where the topology requires it, check the datasheet's reverse conduction figures or add an external Schottky.
- Switching speed is limited by the gate loop, not the die. Keep the gate loop inductance low and budget for a negative turn-off spike on the gate.
- Paralleling needs matched VGS(th). Because VGS(th) spread is narrow the parts parallel well, but layout symmetry still decides current sharing.
Common Questions
Is the CRXF140M120G4Z an N-channel or P-channel device?
It is N-channel. The drain-source rating is 1200 V.
Can the CRXF140M120G4Z be driven at 4.5 V?
No 4.5 V on-resistance figure is published for this part. It is characterised at 15 V gate drive, so use a driver that reaches 15 V.
How much gate charge does the CRXF140M120G4Z need?
Qg is 31 nC. Size the driver against that figure at your switching frequency, and add the gate loop loss to the total dissipation budget.
What package does the CRXF140M120G4Z come in?
TO-220F. Check the datasheet mechanical drawing for lead spacing and thermal pad dimensions before laying out the footprint.
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