Vishay Siliconix IRFR9020

Overview

IRFR9020 from Vishay Siliconix is a P-channel enhancement-mode power MOSFET in DPAK (TO-252) surface-mount package, rated for -50 V V_DS, 0.28 Ω R_DS(on) at V_GS = -10 V, and -9.9 A continuous drain current at T_C = 25 °C. It delivers robust avalanche capability (E_AS = 250 mJ), fast switching (t_r = 57–66 ns), and low gate charge (Q_g = 14 nC max), making it suitable for DC/DC converter high-side switches and load switching in space-constrained industrial power supplies.

For engineers reviewing the IRFR9020 datasheet, IRFR9020 pinout, IRFR9020 application, or IRFR9020 equivalent, this page provides verified electrical parameters, thermal resistance data (R_thJC = 3.0 °C/W), body diode recovery characteristics (t_rr = 56–280 ns), and validated alternatives for high-reliability P-channel switching in 24 V and 48 V systems.

Technical Context

This device uses planar trench-enhanced P-channel silicon technology optimized for low conduction loss and controlled dV/dt immunity. Its gate threshold voltage range (-2.0 to -4.0 V) ensures reliable turn-on with standard logic-level drivers, while its dynamic dV/dt rating (5.8 V/ns) supports stable operation in noisy inductive load environments.

The integrated body diode exhibits low reverse recovery charge (Q_rr = 0.17–0.85 nC) and fast recovery time, enabling efficient synchronous rectification and freewheeling in buck converters. Thermal design is supported by a low junction-to-case resistance of 3.0 °C/W and defined mounting recommendations for FR-4 PCBs.

Key Specifications

Pinout & Package

DPAK (TO-252) surface-mount package with exposed drain pad for thermal and electrical connection; 3-pin configuration optimized for automated assembly on 16 mm tape.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRFR9024, the IRFR9020 delivers lower conduction loss in 24–48 V systems, while SiHFR9020-GE3 provides identical performance with enhanced environmental compliance-making IRFR9020 optimal for cost-sensitive industrial power where legacy Pb-based assembly remains acceptable.

Availability

IRFR9020 is available at Aetrix Electronics and suitable for industrial DC/DC converters, telecom power supplies, and computer peripheral power requiring stable component supply across multi-year production cycles.

Supply support for IRFR9020 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

Vishay Siliconix is a global leader in discrete semiconductors, specializing in high-performance MOSFETs, diodes, and optoelectronics with emphasis on power efficiency and reliability.

The IRFR9020 belongs to Vishay's "TrenchFET® Gen II" P-channel power MOSFET family, engineered for high-current, high-voltage switching in space-constrained industrial and telecom power systems.

FAQ

What is the maximum continuous drain current rating for IRFR9020 at 100 °C case temperature?

The IRFR9020 supports -6.3 A continuous drain current at T_C = 100 °C, derived from its 42 W maximum power dissipation and 3.0 °C/W junction-to-case thermal resistance. This rating ensures reliable operation in thermally constrained environments such as enclosed power modules or densely packed PCBs where ambient temperatures exceed 70 °C. Derating follows a linear factor of 0.33 W/°C above 25 °C case temperature.

Does IRFR9020 have avalanche capability, and how is it specified?

Yes, the IRFR9020 is fully rated for repetitive avalanche operation: I_AR = -9.9 A and E_AR = 4.2 mJ, and for single-pulse avalanche: E_AS = 250 mJ. These values are measured under standardized test conditions (V_DD = -25 V, L = 5.1 mH, R_g = 25 Ω) and reflect the device's ability to absorb inductive energy without failure. The IRFR9020 datasheet confirms these ratings are valid for the exact part number and DPAK package configuration.

What is the gate threshold voltage range for IRFR9020, and how does it affect drive requirements?

The IRFR9020 has a gate-source threshold voltage (V_GS(th)) range of -2.0 V to -4.0 V at I_D = -50 μA. This allows reliable turn-on with 3.3 V or 5 V logic-level drivers, eliminating need for level-shifting circuitry in many applications. At V_GS = -4.5 V, the device achieves usable conduction; full enhancement occurs at -10 V, where R_DS(on) reaches its specified 0.28 Ω maximum.

Can IRFR9020 be used in parallel configurations, and what design considerations apply?

Yes, the IRFR9020 is designed for ease of paralleling due to its positive temperature coefficient of R_DS(on), which promotes current sharing across multiple devices. Key considerations include matched gate drive impedance (≤ 10 Ω per device), symmetrical PCB layout with equal trace lengths, and shared thermal interface to maintain uniform junction temperature. The device's low Q_gd/Q_g ratio further enhances stability during simultaneous switching.

What is the body diode reverse recovery performance of IRFR9020, and why does it matter?

The IRFR9020 body diode exhibits t_rr = 56–280 ns and Q_rr = 0.17–0.85 nC at I_F = -9.7 A and dI/dt = 100 A/μs. These values directly impact switching losses and voltage overshoot in hard-commutated topologies like buck converters and H-bridges. Low Q_rr minimizes stored charge dissipation, reducing heat generation and EMI-critical for high-frequency (>300 kHz), high-efficiency power conversion where the body diode conducts during dead-time intervals.