Overview
The BUK9K17-60EX is an automotive-qualified N-channel MOSFET optimized for high-current, high-efficiency switching applications. With a 170 A continuous drain current, 60 V drain-source rating, and exceptionally low RDS(on) down to 4.5 mΩ, it delivers strong performance in powertrains, motor control systems, DC-DC converters, and heavy-load switching stages. Its rugged Safe Operating Area (SOA) and low gate charge make it suitable for high-frequency designs where thermal management and efficiency are critical.
Core Parameters
| Parameter | Specification |
|---|---|
| Type | N-channel MOSFET |
| Drain-Source Voltage (VDS) | 60 V |
| Continuous Drain Current (ID @ 25°C) | 170 A |
| Pulsed Drain Current (ID,pulse) | 680 A |
| RDS(on) @ 10 V | 4.5 mΩ typical |
| Total Gate Charge (Qg) | 125 nC |
| Gate-Source Voltage (VGS max) | ±20 V |
| Avalanche Energy (EAR) | 1045 mJ |
| Junction Temperature Range | –55°C to +175°C |
| Package | LFPAK56 (Power-SO8) |
Features
- Extremely low RDS(on) (4.5 mΩ typical) minimizes conduction losses under heavy load
- High 170 A continuous drain current, with 680 A pulsed capability
- Automotive-grade reliability compliant with AEC-Q101
- Robust avalanche energy rating (1045 mJ) ensures survival under inductive load switching
- Low gate charge supports high-frequency switching and reduced gate-drive losses
- Enhanced SOA performance for demanding thermal environments
- LFPAK56 package offering strong thermal conductivity and compact PCB footprint
Typical Application Scenarios
| Application | Why BUK9K17-60EX Fits |
|---|---|
| Automotive Powertrains | Low RDS(on) and high ID handle starter motors, pumps, and solenoids |
| DC-DC Converters | Low Qg supports high switching efficiency |
| Electric Motor Drives | 170 A rating enables reliable heavy-load commutation |
| Battery Management Systems | Withstands large surge currents and thermal stress |
| Power Tools & Industrial Drivers | Rugged SOA for repetitive inductive loads |
| High-current Switching Modules | 60 V rating ideal for 12 V and 24 V bus systems |
Performance Comparison
| Feature | BUK9K17-60EX | Standard 60 V MOSFET | High-Performance MOSFET |
|---|---|---|---|
| RDS(on) | 4.5 mΩ typ | 8–15 mΩ | 3–5 mΩ |
| Continuous ID | 170 A | 50–120 A | 150–250 A |
| Qg | 125 nC | 150–200 nC | 80–140 nC |
| Avalanche Energy | 1045 mJ | 300–700 mJ | 900–1200 mJ |
| Package | LFPAK56 | DPAK/SO8 | LFPAK variants |
With a strong balance of low conduction loss, large SOA, and high current rating, the BUK9K17-60EX sits solidly among high-efficiency power switching MOSFETs.
Conclusion
The BUK9K17-60EX delivers a combination of low RDS(on), high avalanche robustness, and 170 A current capability, making it ideal for automotive and industrial power stages. Its LFPAK56 package and low gate charge enable compact, efficient, and thermally stable designs. For engineers building high-current motor drivers, DC-DC converters, or heavy inductive switching systems, this MOSFET provides reliable and repeatable performance under demanding conditions.
Manufacturer Profile
The BUK9K17-60EX is produced by Nexperia, a global supplier of discrete semiconductors and MOSFETs well known for high-reliability, automotive-qualified power components. The company’s LFPAK technology delivers industry-leading thermal efficiency and ruggedness for advanced power electronics applications.
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