The BUK114-50L from NXP Semiconductors (originally Philips) is a logic-level N-channel power MOSFET designed for automotive and industrial switching applications. Housed in a compact 5-pin D²PAK (SOT-426) surface-mount package, it combines high efficiency, low on-resistance, and built-in protection for reliable operation in demanding environments.
This device is part of NXP’s TOPFET family, integrating a vertical DMOS power stage with temperature and short-circuit protection features. With a 50 V drain-source voltage, 15 A continuous drain current, and low RDS(on) of 100 mΩ (typ.), it delivers strong, consistent performance in applications such as lamp drivers, solenoids, and DC motors.
Let’s take a closer look at what makes this automotive-grade transistor a dependable choice for power switching.
Key Features of the BUK114-50L
Logic-Level N-Channel MOSFET
Operates directly from 5 V logic inputs for easy control and integration with microcontrollers.
Integrated Overload Protection
Built-in safeguards against over-temperature and short-circuit conditions with automatic shutdown and latch-off reset.
Overvoltage Clamping
Active clamping at 50–65 V protects against inductive load transients during turn-off.
Low On-Resistance
Typical RDS (on) of 100 mΩ (VIS = 7 V) minimises power loss and heat generation.
Thermal and Short-Circuit Resilience
Capable of handling up to 0.8 kW instantaneous overload dissipation and 200 mJ inductive energy without failure.
Built-In Flag Pin for Status Monitoring
Provides fault indication (over-temperature, short-circuit, or supply fault) for intelligent system feedback.
Fast Switching Performance
Turn-on delay of 8 ns, rise time of 13 ns, and turn-off delay of 100 ns ensure rapid response in PWM or automotive systems.
Compact D²PAK Surface-Mount Package
Space-efficient SOT-426 (5-pin) format with excellent heat transfer and Rth(j-mb) ≤ 3 K/W.
Applications of the BUK9207-30B,118
The BUK114-50L is suitable for a range of automotive and industrial power control systems, including:
- DC motor and solenoid drivers
- Lamp and heater control units
- Power distribution and switching modules
- Embedded automotive controllers
- Battery-powered and portable electronics
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When sourcing the BUK114-50L, choose Component Sense for authenticity, speed, and sustainability.