CR3401 CR Micro -30V -4.7A P-Channel MOSFET SOT-23
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- -30 V / -4.7 A continuous drain current, SOT-23 package
- Rds(on) 44 mΩ typ, 55 mΩ max at VGS = 10 V
- Qg 10 nC and Ciss 492 pF
- P-channel, Trench process
The CR Micro CR3401 is a -30 V -4.7 A P-channel MOSFET in a SOT-23 package, built on the Trench process. On-resistance is 44 mΩ typical and 55 mΩ maximum at a 10 V gate drive; 61 mΩ typical at 4.5 V, so it also works from a logic-level driver; gate charge is 10 nC with 492 pF input capacitance; threshold voltage spans -0.7 to -1.6 V.
Key Specifications
| Drain-Source Voltage (VDS) | -30 V |
| Continuous Drain Current (ID) | -4.7 A |
| Rds(on) @ VGS = 10 V, typ. | 44 mΩ |
| Rds(on) @ VGS = 10 V, max. | 55 mΩ |
| Rds(on) @ VGS = 4.5 V, typ. | 61 mΩ |
| Rds(on) @ VGS = 4.5 V, max. | 75 mΩ |
| Gate Threshold Voltage (VGS(th)) | -0.7 – -1.6 V |
| Total Gate Charge (Qg) | 10 nC |
| Input Capacitance (Ciss) | 492 pF |
| Channel Polarity | P-channel |
| Process Family | Trench |
| Package | SOT-23 |
Process Technology
Trench — the gate is etched vertically into the drift region, multiplying channel width per unit area. Lowest Rds(on) in the sub-200 V range; the trade-off is higher Qg and a more fragile body diode under hard commutation.
Applications
Low-voltage DC-DC converters, load switches, battery protection, and brushed or stepper motor drive.
Selection Notes
- Rds(on) rises with junction temperature. Size the heatsink against the hot value given in the datasheet, not the 25 °C number in the table above.
- If the gate is driven below 10 V, check the 4.5 V Rds(on) line — parts without that rating are not characterised for logic-level drive.
- For high-frequency stages compare Qg and Ciss against the Rds(on) gain. A part one bin lower in Rds(on) often costs more switching loss than it saves in conduction.
- The body diode recovery of low-Rds(on) parts can be severe in bridge topologies. Verify dv/dt and dead time against the datasheet before dropping it into a half bridge.
Common Questions
Is the CR3401 an N-channel or P-channel device?
It is P-channel. The drain-source rating is -30 V.
Can the CR3401 be driven from a 4.5 V logic-level gate signal?
Yes. The datasheet characterises Rds(on) at 4.5 V: 61 mΩ typical and 75 mΩ maximum.
What is the gate threshold voltage of the CR3401?
VGS(th) is specified between -0.7 and -1.6 V. Below the lower figure the part is off; above the upper figure it is fully on at the rated current.
How much gate charge does the CR3401 need?
Qg is 10 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 CR3401 come in?
SOT-23. Check the datasheet mechanical drawing for lead spacing and thermal pad dimensions before laying out the footprint.
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