STMicroelectronics STB300NH02L

Overview

STB300NH02L from STMicroelectronics is an N-channel 24 V, 120 A Power MOSFET in D²PAK (TO-263) package, featuring <1.8 mΩ R_DS(on) at V_GS = 10 V and 80 A, 109.4 nC total gate charge, and optimized for high-current OR-ing and DC/DC converter applications.

For engineers reviewing the STB300NH02L datasheet, STB300NH02L pinout, STB300NH02L application, or STB300NH02L equivalent, key selection criteria include low conduction loss (<1.8 mΩ), low-profile D²PAK thermal performance (R_thj-case = 0.5 °C/W), avalanche ruggedness (1.6 J E_AS), and suitability for high-efficiency power path management in redundant supply systems.

Technical Context

This MOSFET employs ST's STripFET™ III process to minimize R_DS(on) × Q_g product-the industry benchmark for switching efficiency-enabling reduced conduction and switching losses simultaneously. Its 24 V V_DS rating and 120 A continuous drain current support high-current, low-voltage power rails.

The device integrates a robust body diode with 120 A forward current capability and fast reverse recovery (t_rr = 63 ns at T_j = 25°C), making it suitable for synchronous rectification and OR-ing topologies where bidirectional conduction and low V_SD (1.3 V) are critical.

Key Specifications

Pinout & Package

STB300NH02L is housed in a surface-mount D²PAK (TO-263) package with exposed drain pad for enhanced thermal conduction and low parasitic inductance. The package complies with ECOPACK® environmental standards and JEDEC JESD97 marking requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP300NH02L and IRF1404ZPBF, STB300NH02L delivers superior power density, lower thermal resistance, and guaranteed avalanche ruggedness-making it the preferred choice for high-reliability, high-current OR-ing and DC/DC converter designs where board space and fault tolerance are critical.

Availability

STB300NH02L is available at Aetrix Electronics and suitable for server redundant power supplies, industrial DC/DC converters, and telecom line card applications requiring stable component supply and long-term production continuity.

Supply support for STB300NH02L 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, designing and manufacturing analog, digital, and mixed-signal ICs, discrete devices, and MEMS sensors for automotive, industrial, and consumer markets.

STB300NH02L belongs to ST's STripFET™ Power MOSFET product line, engineered specifically for high-efficiency, high-current power conversion and OR-ing applications in enterprise and industrial infrastructure equipment.

FAQ

What is the maximum safe operating temperature for STB300NH02L?

The device supports an operating junction temperature range of –55°C to +175°C. Its absolute maximum rating is defined by thermal limits: at T_C = 25°C, total dissipation is 300 W with a derating factor of 2 W/°C above 25°C. For reliable long-term operation, design must maintain T_j ≤ 150°C under worst-case load and ambient conditions using appropriate heatsinking.

Does STB300NH02L require a gate driver IC?

Yes-due to its 109.4 nC total gate charge and low R_DS(on), efficient switching requires a dedicated gate driver capable of sourcing/sinking ≥2 A peak current. Driving directly from microcontroller GPIO is insufficient and risks slow transitions, excessive switching loss, and thermal stress. Recommended drivers include ST's STD4N60M2 or TI's UCC27531.

Is STB300NH02L RoHS-compliant and lead-free?

Yes-STB300NH02L is supplied in an ECOPACK®-compliant D²PAK package with lead-free second-level interconnect, conforming to RoHS Directive 2011/65/EU and JEDEC Standard JESD97. The inner box label and package marking indicate the lead-free status and moisture sensitivity level (MSL3).

Can STB300NH02L be used in parallel configurations?

Yes-its positive temperature coefficient for R_DS(on) (normalized vs. temperature curves confirm monotonic increase) enables inherent current sharing when paralleled. However, layout symmetry, matched gate drive paths, and individual source resistors (0.01–0.02 Ω) are required to ensure balanced dynamic current distribution and avoid oscillation or thermal runaway.