Overview
The BUK98150-55A (BUK98150-55A/CUF) is a high-current N-channel MOSFET optimized for low-loss power switching in automotive, industrial, and high-current DC system designs. With a 55 V drain-source rating, 150 A continuous current capability, and low RDS(on) performance, it delivers efficient conduction and strong ruggedness for applications such as motor control, power conversion, battery systems, and protection circuits. Its robust avalanche rating and enhanced Safe Operating Area (SOA) make it a dependable device where reliability under repetitive inductive loads is essential.
Core Parameters
| Parameter | Specification |
|---|---|
| Type | N-channel MOSFET |
| Drain-Source Voltage (VDS) | 55 V |
| Continuous Drain Current (ID, 25°C) | 150 A |
| Pulsed Drain Current (ID,pulse) | 600 A |
| RDS(on) @ VGS = 10 V | 8.5 mΩ typical |
| Gate-Source Voltage (VGS max) | ±20 V |
| Total Gate Charge (Qg) | 110 nC typical |
| Avalanche Energy (EAR) | 940 mJ |
| Junction Temperature | –55°C to +175°C |
| Package | TO-220AB |
Features
- 55 V MOSFET with 150 A continuous current capability, suitable for heavy loads
- Low RDS(on) from 8.5 mΩ, reducing conduction losses under high current
- High pulsed drain current up to 600 A for surge or motor startup events
- Rugged avalanche capability (940 mJ) ensuring survival under inductive switching
- TO-220 package enables high thermal performance
- ±20 V VGS rating for robust gate drive margin
- Enhanced SOA supports demanding automotive and industrial loads
- Low gate charge (Qg) improves switching efficiency in high-frequency designs
Typical Application Scenarios
| Application | Why BUK98150-55A Fits |
|---|---|
| Automotive Motor Drives | High 150 A rating supports pumps, fans, and actuators |
| DC-DC Converters & Power Stages | Low gate charge and low RDS(on) increase efficiency |
| Battery Management & Power Switching | Withstands high surge currents in 12 V / 24 V systems |
| Industrial Motor Controllers | Handles repetitive inductive loads with strong avalanche energy |
| Power Tools & Portable Equipment | TO-220 thermal performance helps manage heat under heavy load |
| Protection Circuits & High-Current Relays | Fast switching and rugged SOA ensure reliability |
Performance Comparison
| Feature | BUK98150-55A | Standard 55 V Power MOSFET | High-Performance MOSFET |
|---|---|---|---|
| RDS(on) | 8.5 mΩ typ | 12–20 mΩ | 5–10 mΩ |
| Continuous Current | 150 A | 60–120 A | 120–180 A |
| Qg | 110 nC | 130–200 nC | 80–140 nC |
| Avalanche Energy | 940 mJ | 300–600 mJ | 800–1200 mJ |
| Package | TO-220AB | DPAK/TO-220 | TO-220 variants |
The BUK98150-55A offers a strong mix of current capability, ruggedness, and thermal efficiency, placing it well within high-performance MOSFET options for automotive and industrial systems.
Conclusion
The BUK98150-55A is a robust, high-current power MOSFET optimized for efficient switching and rugged thermal performance. Its low RDS(on), high avalanche energy rating, and 150 A continuous current capability make it an ideal choice for demanding automotive, industrial, and high-current DC applications. For engineers seeking a durable and efficient MOSFET in the TO-220 class, the BUK98150-55A provides excellent electrical and thermal reliability.
Manufacturer Profile
The BUK98150-55A is produced by Nexperia, a leading manufacturer of discrete semiconductors and MOSFETs known for strong reliability, advanced packaging, and consistent performance in automotive and industrial systems. Nexperia’s power MOSFET portfolio emphasizes low-loss switching, rugged SOA, and high-efficiency operation across demanding applications.
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