Infineon Technologies IRF6894MTRPBF

Overview

IRF6894MTRPBF from Infineon Technologies is a 25 V, 37 A (T_A = 25°C), N-channel HEXFET® Power MOSFET with integrated monolithic Schottky diode in DirectFET™ MX package. It delivers 0.9 mΩ R_DS(on) at V_GS = 10 V and 1.4 mΩ at 4.5 V, optimized for synchronous buck converter high-side and low-side FET sockets in CPU core DC-DC power stages.

For engineers reviewing the IRF6894MTRPBF datasheet, IRF6894MTRPBF pinout, IRF6894MTRPBF application, or IRF6894MTRPBF equivalent, key selection criteria include ultra-low on-resistance, dual-sided cooling capability, 31 nC total gate charge, integrated Schottky diode for Q_rr reduction, and compatibility with standard SO-8 PCB footprints despite its 0.7 mm profile.

Technical Context

This MOSFET employs trench-gate silicon technology and DirectFET™ MX packaging to achieve industry-leading R_DS(on) × Q_g figure-of-merit. Its gate threshold voltage of 1.6 V (typ.) enables robust 4.5 V logic-level drive while maintaining tight ±0.5 V tolerance across temperature.

The integrated Schottky diode reduces reverse recovery charge to 58 nC (typ.), enabling high-frequency operation up to 1 MHz in synchronous buck topologies. Dual-sided thermal interface design yields R_θJC = 2.3 °C/W and improves thermal resistance by 80% versus prior-generation packages.

Key Specifications

Pinout & Package

IRF6894MTRPBF uses the DirectFET™ MX (Medium Can, X-Designation) package: metal-can, double-sided thermal interface, 0.7 mm height, footprint compatible with SO-8 layouts. Drain is electrically connected to the top metal can; source and gate are soldered to the PCB substrate.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF6662TRPBF and SiR626DP-T1-GE3, the IRF6894MTRPBF uniquely combines sub-1 mΩ on-resistance, integrated Schottky diode, and dual-sided cooling-enabling higher power density and efficiency in thermally constrained, high-frequency CPU VRMs where thermal interface area is shared between multiple phases.

Availability

IRF6894MTRPBF is available at Aetrix Electronics and suitable for server CPU core VRMs, AI accelerator power stages, and 5G baseband radio PSUs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IRF6894MTRPBF 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, and industrial control ICs and discrete devices.

This part belongs to the DirectFET™ power MOSFET product line, engineered specifically for high-efficiency, high-power-density DC-DC conversion in computing and communications infrastructure where thermal performance and switching speed are critical.

FAQ

What is the maximum continuous drain current at 70°C ambient temperature?

The IRF6894MTRPBF supports 29 A continuous drain current at T_A = 70°C with V_GS = 10 V, as specified in the Absolute Maximum Ratings table. This rating assumes surface mounting on a 1-inch square copper board in still air and reflects silicon-limited conduction capability under realistic board-level thermal conditions.

Does the integrated Schottky diode replace the body diode in all operating conditions?

Yes-the monolithic Schottky diode is connected in parallel with the intrinsic body diode and dominates conduction during reverse recovery due to its lower forward voltage (0.75 V typical at 30 A) and absence of minority-carrier storage. This eliminates reverse recovery tail current and associated switching losses in synchronous rectification.

Can IRF6894MTRPBF be used in high-side switch configurations?

No-it is optimized as a low-side (synchronous rectifier) device. Its gate threshold voltage (1.6 V typ.) and low R_DS(on) are tailored for ground-referenced drive. High-side use would require a floating gate driver and suffers from reduced effective V_GS margin due to bootstrap capacitor droop at high duty cycles.

What PCB layout recommendations apply to maximize dual-sided cooling performance?

Mount the DirectFET™ MX package directly onto a 2-oz copper thermal pad connected to internal ground planes via ≥8 thermal vias (0.3 mm diameter). Apply thermal interface material to the top drain can and mate it to an aluminum or copper heatsink. Avoid solder mask over thermal pads to ensure low-contact resistance on both sides.