Infineon Technologies IRLH7134TR2PBF

Overview

IRLH7134TR2PBF from Infineon Technologies is a 40 V, 50 A (case temperature), low-profile PQFN 5×6 mm N-channel enhancement-mode Power MOSFET optimized for high-efficiency synchronous rectification and DC-DC conversion. It delivers R_DS(on) = 2.8 mΩ (typ) at V_GS = 10 V, Q_g = 39 nC (typ), and thermal resistance R_θJC(bottom) = 1.2 °C/W - enabling high-current, low-loss switching in space-constrained power stages.

For engineers reviewing the IRLH7134TR2PBF datasheet, IRLH7134TR2PBF pinout, IRLH7134TR2PBF application, or IRLH7134TR2PBF equivalent, key selection criteria include its 4.5 V gate drive compatibility (R_DS(on) ≤ 3.9 mΩ), MSL1 industrial qualification, RoHS-compliant PQFN package, and body diode recovery performance (t_rr = 25–38 ns, Q_rr = 74–110 nC) critical for hard-switched topologies.

Technical Context

This HEXFET® device uses trench-gate silicon technology to achieve ultra-low on-resistance with fast switching dynamics. Its dual-side cooling PQFN 5×6 mm package features an exposed drain pad on the bottom and integrated source/ground terminals - supporting high-current conduction while minimizing junction-to-PCB thermal impedance.

The MOSFET exhibits strong gate threshold stability (V_GS(th) = 1.0–2.5 V, tempco = −5.6 mV/°C) and robust avalanche capability (E_AS = 125 mJ, I_AR = 50 A). Its capacitance profile (C_iss = 3720 pF, C_oss = 610 pF, C_rss = 350 pF) and gate charge partitioning (Q_gs2 = 4.5 nC, Q_gd = 16 nC) are tuned for efficient 4.5 V–10 V gate drive in high-frequency DC-DC converters.

Key Specifications

Pinout & Package

PQFN 5×6 mm Outline "E" package with exposed drain pad (D) on bottom surface, 8-pin configuration (3× source, 1× gate, 4× drain tie points), MSL1 rating, and 0.9 mm maximum height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRFH7134TR2PBF, the original IRLH7134TR2PBF remains valid for legacy design continuity, while SiR872DP-T1-GE3 offers minor R_DS(on) improvement at cost of increased switching charge - requiring re-optimization of gate resistor and driver sizing.

Availability

IRLH7134TR2PBF is available at Aetrix Electronics and suitable for secondary-side synchronous rectification, DC-DC brick applications, and boost converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant PQFN packaging.

Supply support for IRLH7134TR2PBF 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 German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

This device belongs to the HEXFET® Power MOSFET product line, engineered for high-efficiency, high-current switching in compact power supplies, motor drives, and renewable energy systems where thermal density and gate drive simplicity are critical.

FAQ

What is the maximum continuous drain current at 100°C case temperature?

The IRLH7134TR2PBF supports 85 A continuous drain current at T_C(bottom) = 100°C and V_GS = 10 V, per the Absolute Maximum Ratings table. This rating assumes proper PCB thermal design with ≥4 thermal vias under the exposed drain pad and ≥1 oz copper on inner layers.

Does this MOSFET require a gate resistor for safe operation?

A gate resistor (typically 1–10 Ω) is required to dampen ringing and limit peak gate current during switching. The device's Q_g = 39 nC and low C_iss/C_rss ratio make it sensitive to gate loop inductance; omitting the resistor risks oscillation and gate oxide stress, especially at >300 kHz.

Can the body diode be used for freewheeling in a buck converter?

Yes - the integral body diode has V_SD = 1.3 V at 50 A and t_rr = 25–38 ns, making it suitable for freewheeling in non-synchronous buck converters up to ~200 kHz. However, for >90% efficiency, synchronous rectification using complementary gate control is strongly recommended.

Is the PQFN 5×6 package lead-free and halogen-free?

Yes - the IRLH7134TR2PBF is RoHS-compliant and explicitly stated as containing no lead, bromide, or halogen. The "PbF" suffix confirms lead-free termination, and the MSL1 rating confirms moisture sensitivity compliance for standard SMT reflow profiles.