Vishay Siliconix IRF9510STRL

Overview

IRF9510STRL from Vishay Siliconix is a P-channel enhancement-mode power MOSFET in D2PAK (TO-263) surface-mount package, rated for -100 V V_DS, 1.2 Ω R_DS(on) at V_GS = -10 V, and -4.0 A continuous drain current at T_C = 25 °C. It serves as a high-side load switch or polarity-reversal control element in DC power distribution, motor drive half-bridges, and industrial power supplies.

For engineers reviewing the IRF9510STRL datasheet, IRF9510STRL pinout, IRF9510STRL application, or IRF9510STRL equivalent, key selection criteria include its -100 V blocking capability, repetitive avalanche rating (E_AS = 200 mJ), 175 °C maximum junction temperature, fast switching performance (t_r = 27 ns), and D2PAK thermal performance (R_thJC = 3.5 °C/W).

Technical Context

This device operates as a voltage-controlled unidirectional switch with gate threshold voltage between -2.0 V and -4.0 V, enabling direct drive from standard logic-level controllers when used with appropriate level-shifting or negative bias. Its body diode supports freewheeling in inductive loads, with t_rr = 82–160 ns and Q_rr = 0.15–0.30 μC under specified conditions.

The IRF9510STRL features dynamic dV/dt immunity (-5.5 V/ns), ruggedized die construction for repetitive avalanche operation, and low internal source/drain inductance (L_S = 7.5 nH, L_D = 4.5 nH), supporting stable high-speed switching in compact PCB layouts without external snubbing in many applications.

Key Specifications

Pinout & Package

D2PAK (TO-263) surface-mount package with exposed drain pad for thermal and electrical connection; 3-pin configuration (Drain, Gate, Source); lead (Pb)-free and halogen-free compliant per Vishay specification.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SiHF9510STRL-GE3, the IRF9510STRL offers identical electrical performance but lacks halogen-free certification; versus IRF9530NPbF, it trades current capacity and thermal mass for surface-mount compatibility and smaller footprint-critical for modern high-density power modules.

Availability

IRF9510STRL is available at Aetrix Electronics and suitable for industrial power supplies, motor control circuits, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IRF9510STRL 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 IRF9510STRL belongs to Vishay's third-generation power MOSFET family, engineered for ruggedness, fast switching, and cost-effective high-voltage P-channel control in surface-mount power conversion and protection applications.

FAQ

What is the maximum continuous drain current for IRF9510STRL at 100 °C case temperature?

The IRF9510STRL supports -2.8 A continuous drain current at T_C = 100 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limits of the D2PAK package and ensures safe operation without exceeding 175 °C junction temperature. Designers must verify PCB copper area and heatsinking to maintain this case temperature under load. The IRF9510STRL datasheet confirms this value under "Continuous Drain Current" with footnote "TC = 100 °C".

Does IRF9510STRL have avalanche capability, and how is it rated?

Yes, the IRF9510STRL is repetitively avalanche rated with E_AS = 200 mJ (single-pulse) and E_AR = 4.3 mJ (repetitive). These values are measured under defined test conditions: V_DD = -25 V, I_AS = -4.0 A, L = 18 mH, R_g = 25 Ω. The IRF9510STRL's ruggedized die design allows it to absorb inductive energy without failure, making it suitable for unclamped inductive switching in motor and relay drivers.

What is the gate threshold voltage range for IRF9510STRL, and how does it affect drive requirements?

The IRF9510STRL has a gate-source threshold voltage (V_GS(th)) range of -2.0 V to -4.0 V at I_D = -250 μA. This means the device begins conducting significantly above -2.0 V and is fully enhanced near -10 V. For reliable saturation, gate drive must deliver ≥ -10 V relative to source. The IRF9510STRL is not a logic-level device; using +3.3 V or +5 V microcontroller outputs directly will not turn it on-negative bias or level-shifting is required.

Can IRF9510STRL be used in parallel with other MOSFETs for higher current handling?

Parallel operation of IRF9510STRL devices is feasible but requires careful attention to gate drive matching, source inductance balancing, and thermal coupling. The device exhibits positive R_DS(on) temperature coefficient, which promotes current sharing. However, the IRF9510STRL's 1.2 Ω on-resistance and 4.0 A rating make parallel use uncommon-designers typically select higher-current alternatives like IRF9530NPbF instead. Layout symmetry is critical to avoid current imbalance.

What is the thermal resistance from junction to case (R_thJC) for IRF9510STRL, and how does it impact heatsink selection?

The IRF9510STRL has a maximum junction-to-case thermal resistance (R_thJC) of 3.5 °C/W, measured from die junction to the D2PAK drain tab. This low value enables efficient heat transfer to an external heatsink or copper plane. For example, at 2.8 A and 1.2 Ω R_DS(on), power dissipation is ~9.4 W; with R_thJC = 3.5 °C/W and a 20 °C/W heatsink, total junction-to-ambient rise is ~80 °C-well within the 175 °C limit. The IRF9510STRL's D2PAK package must be soldered to a large thermal pad per Vishay's recommended footprint.