STMicroelectronics STPS30SM100SFP

Overview

STPS30SM100SFP 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 with low forward voltage drop (0.63 V typ. at 30 A, 125 °C) and avalanche-rated ruggedness. It serves as the primary output rectifier in notebook adapters and game station power supplies, delivering high efficiency across full load range.

For engineers reviewing the STPS30SM100SFP datasheet, STPS30SM100SFP pinout, STPS30SM100SFP application, or STPS30SM100SFP equivalent, key selection criteria include junction-to-case thermal resistance (1 °C/W), repetitive peak reverse voltage (100 V), surge current capability (400 A), and ECOPACK®2 compliance for TO-220AB variants.

Technical Context

This single-diode Schottky rectifier operates without minority-carrier storage, enabling zero reverse recovery time and minimal switching losses in DC/DC converters up to several hundred kHz. Its low VF (0.63 V typ. at 30 A, 125 °C) and high IF(AV) rating directly reduce conduction loss in high-current secondary-side rectification.

The device features a rated maximum junction temperature of 150 °C and is avalanche-rated for PARM = 1545 W (tp = 10 µs), supporting robust transient handling in unregulated or loosely regulated SMPS topologies. Thermal performance is defined by Rth(j-c) = 1 °C/W, requiring direct heatsink mounting via the metal tab (terminal 3).

Key Specifications

Pinout & Package

Package: TO-220AB - Three-terminal through-hole package with insulated tab (terminal 3), epoxy body meeting UL 94 V0, and recommended mounting torque of 0.55 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH01-M3/45 and MBR30100CT, STPS30SM100SFP delivers superior thermal performance (1 °C/W vs. ≥1.2 °C/W), lower VF at high temperature, and guaranteed avalanche ruggedness-critical for reliability in dynamically loaded consumer adapters.

Availability

STPS30SM100SFP is available at Aetrix Electronics and suitable for desktop power supplies, LED lighting drivers, and notebook adapters requiring stable component supply, long-term lifecycle support, and consistent thermal performance across production batches.

Supply support for STPS30SM100SFP 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 automotive, industrial, and consumer markets.

The STPSx series targets high-efficiency power conversion, with STPS30SM100SFP specifically engineered for rugged, thermally constrained secondary-side rectification in compact AC-DC adapters and open-frame SMPS modules.

FAQ

Is STPS30SM100SFP pin-compatible with standard TO-220AB Schottky diodes?

Yes - STPS30SM100SFP uses industry-standard TO-220AB mechanical dimensions (per Table 4 in DS6167 Rev 7), including 2.54 mm lead pitch, 15.5 mm body width, and 10.2 mm body depth. Pin 1 (anode), Pin 2 (cathode), and Tab (cathode) align with JEDEC TO-220AB footprint, enabling drop-in replacement where thermal and electrical specs match.

What is the maximum allowable case temperature for continuous 30 A operation?

At IF(AV) = 30 A and Rth(j-c) = 1 °C/W, junction temperature rises 30 °C above case temperature. To stay within Tj(max) = 150 °C, maximum case temperature is 120 °C. This requires a heatsink with thermal resistance ≤ 0.5 °C/W (including interface) when ambient is 50 °C.

Does STPS30SM100SFP require a thermal pad or insulator when mounted to a heatsink?

Yes - the metal tab (terminal 3) is electrically connected to the cathode. If the heatsink is grounded or at a different potential, an electrically isolating but thermally conductive pad (e.g., mica or polymer-based) must be used. UL 94 V0 compliance of the epoxy body does not eliminate need for isolation in non-cathode-referenced systems.

Can STPS30SM100SFP be used in synchronous rectification circuits?

No - it is a passive Schottky diode, not a synchronous rectifier IC or MOSFET driver. It functions as a self-commutated rectifier. For synchronous designs, discrete MOSFETs (e.g., STripFET™ V) with external gate control are required; STPS30SM100SFP serves only as the freewheeling or output rectifying element in non-synchronous topologies.