STMicroelectronics STB100NH02LT4

Overview

STB100NH02LT4 from STMicroelectronics is an N-channel enhancement-mode Power MOSFET in D2PAK package, rated for 24 V V_DSS, 60 A continuous drain current at T_C = 25°C, and 5.2 mΩ R_DS(on) at V_GS = 10 V. It employs STripFET™ III technology for low conduction and switching losses, targeting high-efficiency DC-DC converters in industrial power supplies.

For engineers reviewing the STB100NH02LT4 datasheet, STB100NH02LT4 pinout, STB100NH02LT4 application, or STB100NH02LT4 equivalent, key selection criteria include its 1.5 °C/W junction-to-case thermal resistance, 47.5 nC total gate charge, avalanche energy rating of 600 mJ, and compatibility with 5 V logic-level drive due to 1.0–1.8 V gate threshold voltage.

Technical Context

This MOSFET operates as a synchronous rectifier or primary-side switch in non-isolated buck and multiphase VRM topologies. Its low R_DS(on) × Q_g figure-of-merit (≈240 mΩ·nC) minimizes combined conduction and switching loss trade-offs at high-frequency operation up to 1 MHz.

The device integrates a fast-recovery body diode with t_rr = 35 ns and Q_rr = 35 nC at T_j = 150°C, enabling efficient hard-switched inductive load control without external freewheeling diodes in compact converter designs.

Key Specifications

Pinout & Package

Package: D2PAK (TO-263), surface-mount, single-ended heat transfer via exposed drain pad. JEDEC-compliant ECOPACK® lead-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IRF1404ZPBF and STL110N10F7, STB100NH02LT4 delivers optimal balance of low R_DS(on), moderate Q_g, and precise 24 V rating - making it the most thermally efficient choice for fixed 24 V DC-DC converters operating above 300 kHz.

Availability

STB100NH02LT4 is available at Aetrix Electronics and suitable for industrial DC-DC converters, server VRMs, and motor drive half-bridges requiring stable component supply and long-term production continuity.

Supply support for STB100NH02LT4 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STripFET™ III Power MOSFET product line targets high-efficiency power conversion in space-constrained applications, emphasizing low R_DS(on) × Q_g and rugged avalanche performance for mission-critical power stages.

FAQ

Is STB100NH02LT4 suitable for 3.3 V logic-level gate drive?

Yes - its gate threshold voltage ranges from 1.0 V to 1.8 V, ensuring reliable turn-on with 3.3 V microcontroller outputs. However, full R_DS(on) specification (5.2 mΩ) requires V_GS ≥ 10 V; at 3.3 V, R_DS(on) rises to ~25 mΩ, limiting use to low-duty-cycle or low-current applications unless paralleled.

What is the maximum safe operating frequency for STB100NH02LT4 in a buck converter?

Based on its 75 ns rise time and 18 ns fall time with 4.7 Ω gate resistor, STB100NH02LT4 supports clean switching up to 1 MHz. Practical limits are set by gate drive capability and thermal management: at 60 A and 500 kHz, junction temperature must remain ≤150°C using a heatsink with ≤1.5 °C/W thermal resistance.

Does STB100NH02LT4 require a gate resistor, and what value is recommended?

Yes - a gate resistor is mandatory to control dV/dt and prevent oscillation. ST's datasheet specifies 4.7 Ω for switching time and EMI characterization. For 500 kHz operation with 1 A peak gate driver, 4.7–10 Ω balances speed and ringing suppression; values <3.3 Ω risk overshoot and shoot-through in half-bridge configurations.

Can STB100NH02LT4 replace STB100NH02L in existing designs?

Yes - STB100NH02LT4 is the tape-and-reel packaging variant of STB100NH02L, sharing identical electrical, thermal, and mechanical specifications. The "T4" suffix denotes D2PAK in 1000-unit tape-and-reel format; no layout or schematic changes are needed for substitution in automated assembly lines.