Vishay Siliconix IRLI540GPBF

Overview

IRLI540GPBF from Vishay Siliconix is a 100 V, 17 A N-channel power MOSFET in TO-220 FULLPAK package with isolated construction, 2.5 kVRMS isolation rating, and logic-level gate drive (V_GS(th) = 1.0–2.0 V). It delivers R_DS(on) = 0.077 Ω at V_GS = 5 V and supports fast switching in DC-DC converters and motor control circuits.

For engineers reviewing the IRLI540GPBF datasheet, IRLI540GPBF pinout, IRLI540GPBF application, or IRLI540GPBF equivalent, key selection criteria include its high-voltage isolation capability, low gate charge (Q_g = 64 nC), thermal resistance (R_thJC = 3.1 °C/W), and suitability for heatsink-mounted industrial power stages requiring creepage ≥4.8 mm.

Technical Context

This third-generation power MOSFET integrates an isolated TO-220 FULLPAK package with internal drain and source inductances (L_D = 4.5 nH, L_S = 7.5 nH) optimized for reduced switching ringing. Its body diode exhibits t_rr = 130–260 ns and Q_rr = 1.5–2.9 μC under specified IF/dI/dt conditions.

The device features rugged unclamped inductive switching capability (E_AS = 400 mJ), peak dV/dt immunity of 5.5 V/ns, and operates across –55 to +175 °C junction temperature range - enabling use in high-reliability industrial motor drives and UPS systems without external isolation hardware.

Key Specifications

Pinout & Package

IRLI540GPBF uses the TO-220 FULLPAK package: isolated plastic body with metal tab (drain-connected), 3-pin through-hole configuration, 15.87 mm × 10.10 mm × 13.10 mm footprint, and screw-mounting compatibility (M3, 0.6 N·m torque).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP12NK100Z and IRF540N, the IRLI540GPBF uniquely combines logic-level drive, certified 2.5 kV isolation, and 4.8 mm creepage in a single TO-220 footprint - making it the only drop-in solution for safety-critical industrial controls requiring both functional and reinforced insulation without layout redesign.

Availability

IRLI540GPBF is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies (UPS), and isolated DC-DC converters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for IRLI540GPBF 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 power MOSFETs, diodes, and optoelectronics with emphasis on ruggedness, reliability, and thermal performance.

The IRLI540GPBF belongs to Vishay's isolated power MOSFET product line, engineered specifically for industrial and commercial power systems where galvanic isolation, creepage compliance, and logic-level controllability are mandatory design requirements.

FAQ

What is the maximum continuous drain current for IRLI540GPBF at 100 °C case temperature?

The IRLI540GPBF supports 12 A continuous drain current at T_C = 100 °C, as specified in its Absolute Maximum Ratings table. This derating reflects thermal limitations of the TO-220 FULLPAK package and ensures safe operation within its 175 °C maximum junction temperature limit. Designers must verify heatsink thermal resistance to maintain T_C ≤ 100 °C under full-load conditions.

Does IRLI540GPBF require external gate resistors for reliable switching?

Yes - while the IRLI540GPBF has low gate charge (64 nC), a series gate resistor (typically 4.5–25 Ω) is recommended to control dI/dt, suppress oscillation, and limit peak gate current. The datasheet specifies R_g = 25 Ω for avalanche testing and R_g = 4.5 Ω for switching time characterization, confirming its necessity for robust operation in real-world layouts.

Can IRLI540GPBF be used in place of a standard TO-220 MOSFET without modifying the PCB?

No - although IRLI540GPBF shares the same outline dimensions as standard TO-220, its TO-220 FULLPAK variant features an electrically isolated tab (drain-connected) and dual-source leads. PCB footprints must accommodate the isolated mounting and Kelvin-source routing; standard TO-220 pads will short the drain to heatsink unless modified with isolation barriers.

What is the body diode forward voltage of IRLI540GPBF at 17 A and 25 °C?

The body diode forward voltage (V_SD) of IRLI540GPBF is 2.5 V maximum at I_S = 17 A and T_J = 25 °C with V_GS = 0 V. This value is critical for freewheeling loss calculation in synchronous rectifier or H-bridge configurations and is measured directly across source-to-drain terminals under specified test conditions.

How does the isolation rating of IRLI540GPBF compare to using a standard TO-220 with mica insulator?

The IRLI540GPBF's 2.5 kV_RMS isolation matches the dielectric strength of a 100 µm mica washer used with standard TO-220 devices, but achieves it integrally via molding compound - eliminating assembly variability, thermal interface resistance, and mechanical failure modes associated with discrete insulators. Its sink-to-lead creepage distance of 4.8 mm exceeds typical mica-based solutions.