STMicroelectronics STPS30M100ST

Overview

STPS30M100ST from STMicroelectronics is a 100 V, 30 A average forward current Schottky rectifier in TO-220AB package, optimized for high-frequency switch-mode power supplies. It delivers low forward voltage drop (0.605 V typ. at 30 A, 125 °C), specified avalanche capability (1900 W peak), and ECOPACK®2 compliance for notebook and gaming adapter applications.

For engineers reviewing the STPS30M100ST datasheet, STPS30M100ST pinout, STPS30M100ST application, or STPS30M100ST equivalent, key selection criteria include conduction loss modeling (P = 0.475 × IF(AV) + 0.006 × IF²(RMS)), thermal resistance (Rth(j-c) = 1 °C/W), reverse leakage (≤50 mA at 125 °C, VR = 100 V), and package-specific mounting torque (0.55 N·m recommended).

Technical Context

This dual-anode Schottky rectifier uses platinum-silicide barrier technology to achieve low VF while maintaining controlled IR trade-off across temperature. Its 150 °C maximum junction temperature and 1900 W repetitive avalanche rating enable robust operation under transient overvoltage conditions in DC/DC converters.

The device supports high-frequency switching up to several hundred kHz with minimal reverse recovery charge (Qrr not specified but inherently near-zero), and its TO-220AB mechanical design provides direct heatsink mounting via insulated tab for efficient conduction cooling in compact desktop power supplies.

Key Specifications

Pinout & Package

Housed in TO-220AB package with insulated metal tab (pin 1: anode, pin 2: cathode, pin 3: tab/anode). The tab is electrically connected to the anode and must be isolated from chassis ground unless circuit topology requires common-anode configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-30CTH10-M3 and MBR30100CT, STPS30M100ST offers lower VF at elevated temperature, certified avalanche capability, and insulated TO-220AB packaging-making it uniquely suited for thermally dense, safety-critical adapter designs requiring long-term reliability under surge stress.

Availability

STPS30M100ST is available at Aetrix Electronics and suitable for laptop AC adapters, gaming console power supplies, LED drivers, and industrial DC/DC converters requiring stable component supply with consistent thermal and electrical performance across production batches.

Supply support for STPS30M100ST 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 analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The STPS series targets high-efficiency power conversion with Schottky rectifiers optimized for SMPS secondary-side use-emphasizing low VF, thermal robustness, and environmental compliance in compact form factors.

FAQ

Is STPS30M100ST suitable for synchronous rectification?

No-it is a passive Schottky rectifier, not a synchronous rectifier IC or MOSFET driver. It functions as a unidirectional conduction device with zero reverse recovery charge, but requires external gate control for true synchronous operation. Its low VF makes it ideal as a replacement for active synchronous designs where control complexity must be minimized.

What is the maximum recommended mounting torque for the TO-220AB tab?

The recommended torque value is 0.55 N·m, with a maximum allowable torque of 0.70 N·m. Exceeding this risks cracking the epoxy body or deforming the leadframe, which can degrade thermal resistance and cause premature failure under thermal cycling.

Does STPS30M100ST require a heatsink in a 30 A application?

Yes-its Rth(j-c) = 1 °C/W means that at 30 A with VF = 0.605 V, conduction loss is ~18.15 W. Without a heatsink, junction temperature would exceed 150 °C even at room ambient. A minimum 10 °C/W heatsink is required to maintain Tj ≤ 125 °C at 30 A continuous.

How does ECOPACK®2 compliance affect PCB assembly?

ECOPACK®2 compliance confirms halogen-free, lead-free, and RoHS-compliant materials-enabling compatibility with standard Pb-free reflow profiles (peak 260 °C) and eliminating restrictions on solder mask or conformal coating chemistry. No special assembly process adjustments are needed beyond standard J-STD-020 guidelines.