Infineon Technologies IRF7457TR

Overview

IRF7457TR from Infineon Technologies (formerly International Rectifier) is a 20 V, 15 A, 7.0 mΩ N-channel HEXFET Power MOSFET in SO-8 package, optimized for high-frequency synchronous rectification in isolated DC-DC converters and buck regulators for telecom and processor power. It features ultra-low R_DS(on), fully characterized avalanche capability (265 mJ), and low gate charge (28 nC typ.) for efficient switching at 1–2 MHz.

For engineers reviewing the IRF7457TR datasheet, IRF7457TR pinout, IRF7457TR application, or IRF7457TR equivalent, key selection criteria include its 7.0 mΩ on-resistance at V_GS = 10 V, 12 A continuous current at 70°C, 15 A pulsed rating, and SO-8 thermal performance (R_θJA = 50 °C/W).

Technical Context

This MOSFET employs planar silicon process technology with optimized cell pitch and trench-free structure to achieve low conduction loss while maintaining robust unclamped inductive switching (UIS) performance. Its gate threshold voltage (1.0–3.0 V) and low Q_gd/Q_gs ratio (≈0.9) support stable operation with 4.5 V logic-level drive in synchronous rectifier topologies.

The device integrates a fast body diode with t_rr = 50–75 ns and Q_rr = 70–110 nC, enabling efficient reverse recovery in hard-switched and resonant converter stages. Thermal design is supported by validated junction-to-ambient and junction-to-drain thermal resistance values under defined PCB mounting conditions.

Key Specifications

Pinout & Package

SO-8 surface-mount package (JEDEC MS-012AA), 4.9 × 6.0 mm footprint, 1.75 mm height, with exposed drain pad for thermal enhancement. Pin 1 marked via laser etch; lead-free (PbF) construction per RoHS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel power MOSFET applications.

Compared with Si7157DP and DMN2011UVT, the IRF7457TR offers optimal balance of low R_DS(on), moderate Q_g, and proven avalanche ruggedness-making it preferred for telecom and industrial SMPS where reliability under transient stress is critical.

Availability

IRF7457TR is available at Aetrix Electronics and suitable for telecom DC-DC converters, server VRMs, and industrial PoE++ power supplies requiring stable component supply and long-term manufacturability.

Supply support for IRF7457TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and industrial control solutions.

The IRF7457TR belongs to Infineon's legacy HEXFET® Power MOSFET product line, engineered specifically for high-efficiency, high-frequency switching power conversion in consumer, telecom, and computing applications.

FAQ

Is IRF7457TR suitable for 4.5 V gate drive in synchronous rectifier applications?

Yes. The device guarantees R_DS(on) ≤ 10.5 mΩ at V_GS = 4.5 V and I_D = 12 A, with gate threshold voltage specified between 1.0 V and 3.0 V. This ensures full enhancement and low conduction loss when driven directly by 4.5 V logic or controller outputs without level-shifting.

What is the maximum recommended PCB copper area for thermal performance?

Per the datasheet, thermal characterization was performed on a 1-inch² (25.4 mm × 25.4 mm) FR-4 board with 2 oz copper. Increasing copper area beyond this provides diminishing returns; however, using internal ground/power planes and thermal vias beneath the exposed drain pad improves R_θJA by up to 15 °C/W in multilayer boards.

Does IRF7457TR have built-in ESD protection?

No. The device does not integrate dedicated ESD protection circuitry. Its gate oxide is rated for ±20 V absolute maximum V_GS; therefore, handling and PCB layout must follow standard MOSFET ESD precautions-including current-limiting gate resistors, avoidance of floating gate traces, and use of grounded wrist straps during assembly.

Can IRF7457TR replace IRF7457PbF in existing designs?

Yes. IRF7457TR is the tape-and-reel version of the same die and package as IRF7457PbF, with identical electrical specifications, thermal ratings, and pinout. The "TR" suffix denotes packaging format only; no parametric or reliability differences exist between the two part numbers.