Part Number: 2SK3599
Function: 100V, 29A, N-Channel, MOSFET
Package: TO-220F Type
Manufacturer: Fuji Electric
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Description
The 2SK3599 is a 100V N-channel silicon power MOSFET designed for high-speed switching and efficient power control applications. It features low on-resistance, avalanche ruggedness, and low gate drive requirements, making it suitable for high-efficiency switching designs. This device is commonly used in switching regulators, UPS systems, and DC-DC converter circuits.
Features
- High-speed switching capability
- Low drain-source ON resistance for improved efficiency
- No secondary breakdown characteristic
- Low gate drive power requirement
- Avalanche-proof design for enhanced reliability
- High current handling capability up to 29A
Pinout

Absolute Maximum Ratings (Tc = 25 °C)
| Parameter | Symbol | Value | Unit |
| Drain-Source Voltage | VDSS | 100 | V |
| Gate-Source Voltage | VGSS | ±30 | V |
| Drain Current | ID | 29 | A |
| Power Dissipation | Pd | 2.16 | W |
| Channel Temperature | Tch | 150 | °C |
| Storage Temperature | Tstg | -55 to 150 | °C |
Design Notes
- Low RDS(on) enables efficient conduction with reduced power loss
- High-speed switching requires careful PCB layout to minimize parasitics
- Avalanche capability improves robustness under transient conditions
- Ensure adequate thermal path despite relatively low package dissipation rating
- Gate resistor may be used to balance switching speed and EMI
Typical Circuit Usage
- Switching regulator power stages
- DC-DC converter switching elements
- UPS inverter and power control circuits
- Load switching in medium-voltage systems
- Synchronous rectification applications
How to Choose This Part
- Select for applications up to 100V with high current demand
- Ideal for high-efficiency switching designs
- Ensure thermal dissipation is managed within limits
- Verify gate drive compatibility for optimal switching
- Consider avalanche rating for inductive load environments
Applications
- Switching regulators
- UPS (Uninterruptible Power Supply)
- DC-DC converters
- Power management systems
- Industrial switching circuits
Alternative / Equivalent Products
- IRF540N (100V power MOSFET)
- STP55NF06 (low RDS(on) MOSFET)
- FQP30N06L (logic-level alternative)
- 2SK3563 (similar N-channel MOSFET)
- IPP110N10N3 (high-efficiency MOSFET)
Other data sheets are available within the file: K3599, 2SK359901MR, K3599-01MR
