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IRFL4310TRPBF

IFXIRFL4310TRPBF

Infineon Technologies
N-Channel 100 V 1.6A (Ta) 1W (Ta) Surface Mount SOT-223
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Overview

The IRFL4310TRPBF is a high-voltage N-Channel power MOSFET housed in a space-efficient SOT-223 package. Designed for 100V applications, it balances a low gate charge of 25 nC with a continuous drain current rating of 1.6A. This device is optimized for switching and power conversion tasks where surface-mount footprint and thermal performance are critical considerations.

Why Choose This Part

This MOSFET offers a low input capacitance of 330 pF and a gate charge of 25 nC, enabling faster switching speeds and reduced drive losses. Its SOT-223 package provides a compact alternative to DPAK while maintaining a 1W power dissipation rating. With a 100V Vdss rating, it provides significant design margin for 48V and 72V rail applications.

Applications

DC-DC Converters
Acts as a high-side or low-side switch in buck, boost, or SEPIC converters requiring up to 100V operation.
Solenoid and Relay Driving
Provides reliable switching for inductive loads in industrial and consumer electronics.
LED Backlighting
Suitable for driving high-voltage LED strings in display panels and architectural lighting.
Battery Management Systems
Utilized in protection circuits and cell balancing for high-voltage multi-cell battery packs.

Key Specifications

FET Type N-Channel
Vgs (Max) +/-20V
Technology MOSFET (Metal Oxide)
Mounting Type Surface Mount
Package / Case TO-261-4, TO-261AA
Vgs(th) (Max) @ Id 4V @ 250uA
Operating Temperature -55degC ~ 150degC (TJ)
Rds On (Max) @ Id, Vgs 200mOhm @ 1.6A, 10V
Power Dissipation (Max) 1W (Ta)
Supplier Device Package SOT-223
Gate Charge (Qg) (Max) @ Vgs 25 nC @ 10 V
Drain to Source Voltage (Vdss) 100 V
Input Capacitance (Ciss) (Max) @ Vds 330 pF @ 25 V
Drive Voltage (Max Rds On, Min Rds On) 10V
Current - Continuous Drain (Id) @ 25degC 1.6A (Ta)

Getting Started

When designing with this MOSFET, ensure the gate drive voltage reaches 10V to achieve the rated Rds(on) of 200mOhm. For thermal management, provide sufficient copper area on the PCB at the Drain tab (Pin 4) to dissipate heat from the SOT-223 package. Use a standard flyback diode when switching inductive loads to prevent voltage spikes from exceeding the 100V limit.