Infineon Technologies SPB42N03S2L-13

Overview

SPB42N03S2L-13 from Infineon Technologies is an N-channel logic-level enhancement-mode MOSFET in TO-263-3 (D²PAK) package, rated for 30 V V_DS, 42 A continuous drain current at T_C = 25 °C, and 12.9 mΩ R_DS(on) at V_GS = 10 V. It features avalanche rating, 175 °C operation, and optimized gate charge × R_DS(on) figure-of-merit for high-efficiency DC-DC converters and motor control stages.

For engineers reviewing the SPB42N03S2L-13 datasheet, SPB42N03S2L-13 pinout, SPB42N03S2L-13 application, or SPB42N03S2L-13 equivalent, key selection criteria include its 4.5 V logic-level gate drive compatibility, 1.2 K/W typical thermal resistance (junction-to-case), 22.9 nC total gate charge, and integrated body diode with 24 ns reverse recovery time - critical for synchronous rectification and hard-switched topologies.

Technical Context

This MOSFET employs a trench-based OptiMOS® process to achieve low conduction loss and fast switching. Its gate threshold voltage (1.2–2.0 V typ.) enables reliable turn-on with standard logic-level drivers, while the 9.9–12.6 mΩ R_DS(on) at V_GS = 10 V and I_D = 21 A ensures minimal power dissipation in high-current load switches.

The device supports repetitive avalanche energy up to 8 mJ and single-pulse avalanche energy of 110 mJ, with dv/dt immunity rated at 6 kV/µs under defined conditions. Its C_iss (850–1130 pF), C_oss (330–440 pF), and Q_gd (7.9–11.9 nC) values are optimized for reduced switching losses in 30 V-class power stages operating up to several hundred kHz.

Key Specifications

Pinout & Package

SPB42N03S2L-13 uses the P-TO263-3-2 (D²PAK) surface-mount package with exposed drain pad for enhanced thermal performance. The case temperature (T_C) is measured at the center of the drain tab.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRL3803PbF and STL32N3LLH6, SPB42N03S2L-13 delivers superior thermal resistance (1.2 K/W vs. ≥2.0 K/W), guaranteed avalanche ruggedness, and tighter R_DS(on) tolerance across temperature - making it preferred for high-reliability industrial and automotive power stages.

Availability

SPB42N03S2L-13 is available at Aetrix Electronics and suitable for motor control, DC-DC conversion, and industrial load switching requiring stable component supply and long-term manufacturability.

Supply support for SPB42N03S2L-13 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 German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

This part belongs to the OptiMOS® 30 V logic-level power transistor product line, engineered for high-efficiency, high-current switching in space-constrained and thermally demanding applications such as server power supplies and automotive ECUs.

FAQ

Is SPB42N03S2L-13 suitable for 3.3 V microcontroller gate drive?

Yes. With a gate threshold voltage range of 1.2–2.0 V and guaranteed R_DS(on) at V_GS = 4.5 V, SPB42N03S2L-13 achieves full enhancement using 3.3 V logic outputs when paired with appropriate gate resistor sizing to manage dV/dt and ringing. Its low Q_gs (2.7–3.6 nC) further eases drive requirements.

What is the maximum PCB copper area needed for full 42 A operation?

For continuous 42 A operation at T_C = 100 °C, the datasheet specifies a minimum 6 cm² (e.g., 40 mm × 40 mm) single-layer 70 µm copper area connected to the drain pad on FR4 PCB. Thermal performance improves with multilayer copper or internal planes, but 6 cm² is the validated baseline for 83 W power dissipation at 25 °C ambient.

Does SPB42N03S2L-13 have a built-in ESD protection diode?

No. SPB42N03S2L-13 does not integrate gate ESD protection. Its gate-source leakage (I_GSS) is specified up to ±20 V, and handling requires standard MOSFET ESD precautions. External gate protection (e.g., Zener clamp to source) is recommended in systems exposed to human contact or noisy environments.

Can this MOSFET replace SPI42N03S2L-13 in a TO-262 layout?

No. Although electrically identical, SPB42N03S2L-13 uses P-TO263-3-2 (D²PAK) with gull-wing leads and exposed drain pad, while SPI42N03S2L-13 uses P-TO262-3-1 (I²PAK) with straight leads and different footprint. Mechanical mounting, solder reflow profile, and thermal interface design differ significantly between the two packages.