Vishay Siliconix IRF9530S

Overview

IRF9530S from Vishay Siliconix is a P-channel enhancement-mode power MOSFET in D2PAK (TO-263) surface-mount package, rated for -100 V drain-source voltage, 0.30 Ω R_DS(on) at V_GS = -10 V, and -12 A continuous drain current at T_C = 25 °C. It supports fast switching, repetitive avalanche operation, and operates up to +175 °C junction temperature - used in high-side DC-DC converter switches and motor control H-bridge upper-leg drivers.

For engineers reviewing the IRF9530S datasheet, IRF9530S pinout, IRF9530S application, or IRF9530S equivalent, key selection considerations include its -100 V blocking capability, 38 nC total gate charge, 1.7 °C/W junction-to-case thermal resistance, and D2PAK footprint compatibility with high-current PCB layouts requiring >3 W dissipation.

Technical Context

This device implements a third-generation silicon process optimized for ruggedized power switching, featuring dynamic dV/dt immunity (-5.5 V/ns), intrinsic body diode with 120–240 ns reverse recovery time, and unclamped inductive switching capability up to 400 mJ single-pulse avalanche energy. Its gate threshold voltage range of -2.0 V to -4.0 V ensures stable turn-on under industrial bias conditions.

The IRF9530S uses a planar vertical DMOS structure with low internal source/drain inductance (L_S = 7.5 nH, L_D = 4.5 nH), enabling clean switching waveforms in hard-switched topologies. Thermal design leverages the D2PAK's exposed drain pad for direct heatsinking, delivering 88 W maximum power dissipation at T_C = 25 °C.

Key Specifications

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad on bottom side; 3-terminal configuration (Drain, Gate, Source); JEDEC-compliant outline; thermal pad soldered to PCB copper area for optimal heat transfer.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF9530S, IRF9540NPbF offers lower R_DS(on) but requires PCB real estate for TO-220 mounting and delivers higher gate drive loss, while SiHF9530STRL-GE3 provides identical electrical performance with enhanced environmental compliance and logistics support for volume SMT assembly.

Availability

IRF9530S is available at Aetrix Electronics and suitable for industrial motor control, DC-DC converter high-side switching, and power ORing applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for IRF9530S 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 and passive components, specializing in high-reliability power MOSFETs, diodes, and optoelectronics for industrial, automotive, and computing markets.

The IRF9530S belongs to Vishay's third-generation power MOSFET family engineered for ruggedized switching in high-current, high-temperature environments - designed specifically for high-side switching, motor drive, and redundant power architectures.

FAQ

What is the maximum continuous drain current rating for IRF9530S at 100 °C case temperature?

The IRF9530S supports -8.2 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the D2PAK package under sustained high-temperature operation; designers must ensure adequate heatsinking or airflow to maintain safe junction temperatures below +175 °C. The IRF9530S maintains stable R_DS(on) performance across this range due to its negative temperature coefficient.

Does IRF9530S have an integrated body diode, and what are its key parameters?

Yes, the IRF9530S includes an integral reverse p-n junction body diode. Key parameters include -12 A continuous source-drain current, -6.3 V forward voltage at -12 A and 25 °C, 120–240 ns reverse recovery time, and 0.46–0.92 μC reverse recovery charge. These values are measured under standardized conditions (T_J = 25 °C, I_F = -12 A, dI/dt = 100 A/μs) and enable use in freewheeling and synchronous rectification roles without external diodes.

Is IRF9530S suitable for avalanche operation, and what energy level is rated?

The IRF9530S is explicitly rated for repetitive avalanche operation with 8.8 mJ per pulse at I_AR = -12 A, and single-pulse avalanche energy of 400 mJ. These ratings are validated per test conditions in Figure 12 (V_DD = -25 V, L = 4.2 mH, R_g = 25 Ω). Avalanche capability allows safe operation during inductive load switching transients without external protection, making IRF9530S appropriate for relay drivers and solenoid controls.

What is the gate threshold voltage range for IRF9530S, and how does it affect drive requirements?

The IRF9530S has a gate threshold voltage (V_GS(th)) range of -2.0 V to -4.0 V at I_D = -250 μA. This ensures reliable turn-on with standard -10 V gate drive while maintaining noise immunity against spurious turn-on from coupling or leakage. Drive circuits must deliver sufficient negative voltage swing and current to fully enhance the channel; insufficient gate drive results in elevated R_DS(on) and thermal stress. The IRF9530S is not a logic-level device and requires dedicated negative bias for robust operation.

How does the D2PAK package of IRF9530S compare thermally to TO-220 alternatives?

The D2PAK package of IRF9530S achieves 1.7 °C/W junction-to-case thermal resistance - significantly lower than typical TO-220 packages (~2.5–3.0 °C/W) - due to its large exposed drain pad and optimized internal construction. When mounted on a 1"² FR-4 PCB with thermal vias, IRF9530S delivers 3.7 W maximum power dissipation, versus ~2.5 W for comparable TO-220 devices. This makes IRF9530S preferable in space-constrained, high-power-density applications where thermal performance directly impacts reliability.