Infineon Technologies IRF7425

Overview

IRF7425 from Infineon Technologies (formerly International Rectifier) is a P-channel enhancement-mode HEXFET® Power MOSFET in SO-8 package, designed for high-efficiency DC-DC conversion and load switching in low-voltage power management systems. It features -20 V V_DS, 8.2 mΩ R_DS(on) @ V_GS = -4.5 V, -15 A continuous drain current at 25°C, and integrated body diode with 120–180 ns reverse recovery time - enabling compact synchronous buck converter topologies and battery protection circuits.

For engineers reviewing the IRF7425 datasheet, IRF7425 pinout, IRF7425 application, or IRF7425 equivalent, key selection criteria include verified R_DS(on) at logic-level gate drive (-4.5 V), SO-8 thermal performance (50 °C/W R_θJA), body diode Q_rr (160–240 nC), and gate charge profile (Q_g = 87 nC typ.) for PWM-controlled power stages.

Technical Context

This P-channel MOSFET operates as a high-side switch or synchronous rectifier in buck converters, OR-ing circuits, and hot-swap controllers. Its -1.2 V gate threshold (V_GS(th)) ensures reliable turn-on with standard logic-level drivers, while its 13 mΩ R_DS(on) @ V_GS = -2.5 V supports operation under constrained gate drive conditions.

The device integrates a fast-recovery body diode (t_rr ≤ 180 ns, Q_rr ≤ 240 nC) optimized for freewheeling in discontinuous conduction mode (DCM) and light-load efficiency. Thermal design is anchored to SO-8 mounting on 1-in² copper, with linear derating of 20 mW/°C above 70°C ambient.

Key Specifications

Pinout & Package

IRF7425 uses the industry-standard SO-8 surface-mount package (JEDEC MS-012AA), with exposed drain pads on pins 1–3 and 5–8 for thermal and electrical connection. The package enables multi-vendor compatibility and automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si7157DP and DMG2305U, IRF7425 delivers the best balance of low R_DS(on) and moderate Q_g for medium-power (5–12 A), 300–800 kHz DC-DC applications - making it optimal for industrial power modules where thermal headroom and gate drive simplicity are prioritized.

Availability

IRF7425 is available at Aetrix Electronics and suitable for DC-DC converters, battery protection circuits, hot-swap interfaces, and OR-ing diode replacements requiring stable component supply and long-term industrial availability.

Supply support for IRF7425 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 specializing in power management, automotive, and industrial control solutions, with deep expertise in silicon-based power devices.

The IRF7425 belongs to Infineon's legacy HEXFET® Power MOSFET product line, engineered for high-efficiency, logic-level-driven power switching in consumer, computing, and industrial power supplies.

FAQ

Is IRF7425 suitable for 3.3 V gate drive?

Yes. With a gate threshold voltage range of -0.45 V to -1.2 V and guaranteed R_DS(on) of 8.2 mΩ at V_GS = -4.5 V, IRF7425 achieves full enhancement using standard 3.3 V logic outputs with appropriate level-shifting or direct drive where negative swing is supported. Its low V_GS(th) ensures robust turn-on even with marginal gate drive margins.

What is the maximum safe operating area (SOA) limitation at 100°C case temperature?

At T_C = 100°C, the maximum continuous drain current is derated to approximately 6.5 A (per Fig. 9), and pulsed operation is limited by R_DS(on) and thermal impedance. For 100 μs pulses, peak current remains ≤60 A, but sustained operation above 6.5 A requires active cooling or reduced ambient temperature to avoid exceeding 150°C junction limit.

Does IRF7425 have an integrated ESD protection diode on the gate?

No. IRF7425 does not integrate gate ESD protection; its gate oxide is rated for ±12 V absolute maximum V_GS. External TVS or RC snubbers are recommended in high-noise environments. Handling requires standard MOSFET ESD precautions - including grounded workstations and ionized air - to prevent latent damage from static discharge below the visible failure threshold.

Can IRF7425 be used in parallel with identical units for higher current capacity?

Yes, but with strict layout and gate drive matching. Due to negative temperature coefficient of R_DS(on), paralleling requires individual gate resistors (≤10 Ω), symmetrical PCB traces, shared source sensing, and thermal coupling to ensure current sharing within ±15%. Derate total current by 20% versus sum of individual ratings to accommodate mismatch-induced imbalance.