Infineon Technologies IRLR2905TRRPBF

Overview

IRLR2905TRRPBF from Infineon Technologies (formerly International Rectifier) is a logic-level N-channel Power MOSFET in D-Pak (TO-252AA) package, rated for 55 V V(BR)DSS, 42 A continuous drain current at 25°C, and 0.027 Ω RDS(on) at VGS = 10 V. It features ultra-low on-resistance, fast switching, full avalanche rating, and is optimized for high-efficiency DC-DC converters, motor drives, and synchronous rectification in industrial power supplies.

For engineers reviewing the IRLR2905TRRPBF datasheet, IRLR2905TRRPBF pinout, IRLR2905TRRPBF application, or IRLR2905TRRPBF equivalent, key selection criteria include gate threshold voltage (1.0–2.0 V), total gate charge (48 nC), diode reverse recovery time (80–120 ns), thermal resistance (1.4 °C/W junction-to-case), and logic-level drive compatibility down to 4.0 V.

Technical Context

This fifth-generation HEXFET device uses advanced silicon processing to minimize RDS(on) per die area while maintaining rugged unclamped inductive switching capability (EAS = 210 mJ). Its low gate charge and optimized capacitance profile (Ciss = 1700 pF, Crss = 150 pF) support high-frequency operation up to several hundred kHz in hard-switched topologies.

The integrated body diode exhibits controlled reverse recovery (Qrr = 210–320 nC, trr = 80–120 ns) and forward voltage of 1.3 V at 25 A, enabling reliable synchronous rectification without external Schottky diodes in medium-power SMPS designs.

Key Specifications

Pinout & Package

IRLR2905TRRPBF is housed in a surface-mount D-Pak (TO-252AA) package with exposed drain pad for thermal and electrical connection. The three terminals are arranged in straight-line configuration: Source (S), Gate (G), Drain (D), with Drain electrically tied to the large bottom-side thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRLR2905TRRPBF, IRLZ44N trades higher gate drive energy for through-hole reliability, while STP55NF06L offers lower conduction loss but reduced logic-level consistency-making IRLR2905TRRPBF optimal for compact, 3.3–5 V-controlled SMT power stages requiring balanced switching/conduction performance.

Availability

IRLR2905TRRPBF is available at Aetrix Electronics and suitable for DC-DC converters, motor drives, industrial power supplies, and hot-swap ORing circuits requiring stable component supply across multi-year production cycles.

Supply support for IRLR2905TRRPBF 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 acquired International Rectifier in 2015 and continues its legacy of high-performance power semiconductors with rigorous automotive and industrial qualification standards.

This device belongs to the HEXFET® Power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in medium-power industrial and computing power conversion systems.

FAQ

What is the maximum safe operating temperature for IRLR2905TRRPBF?

The absolute maximum junction temperature is +175°C, with continuous operation limited to 150°C for extended lifetime reliability. Thermal design must ensure RθJC (1.4 °C/W) and PCB copper area maintain TJ ≤ 150°C under worst-case ambient and power dissipation conditions.

Can IRLR2905TRRPBF be driven directly from a 3.3 V microcontroller GPIO?

Yes - its gate threshold voltage range (1.0–2.0 V) and logic-level enhancement allow full turn-on at 3.3 V, though RDS(on) rises to 0.040 Ω at VGS = 4.0 V. For minimal conduction loss, use 5 V drive; for 3.3 V operation, verify load current stays ≤15 A to hold junction temperature within limits.

Does IRLR2905TRRPBF have an integrated ESD protection diode on the gate?

No - the device lacks on-chip gate ESD protection. External Zener clamping (e.g., 12 V TVS between gate and source) is required in environments with handling or system-level ESD exposure to prevent gate oxide damage from voltages exceeding ±16 V.

Is the body diode suitable for continuous freewheeling in a buck converter?

Yes - the intrinsic body diode is rated for continuous source current up to 25 A and pulsed current up to 160 A. However, its 1.3 V forward drop and 80–120 ns reverse recovery cause higher loss than an external Schottky; use synchronous gate drive to minimize diode conduction time.