STMicroelectronics STPS2H100U

Overview

STPS2H100U from STMicroelectronics is a 100 V, 2 A surface-mount Schottky rectifier in SMB package, optimized for high-frequency DC/DC converters and telecom power supplies. It delivers low forward voltage drop (0.65 V max at 2 A, 125 °C), negligible switching losses, and avalanche-rated operation up to 173 W peak, enabling compact, thermally efficient power stages in LED lighting and battery charger designs.

For engineers reviewing the STPS2H100U datasheet, STPS2H100U pinout, STPS2H100U application, or STPS2H100U equivalent, key selection criteria include its 175 °C maximum junction temperature, low leakage current (1 µA at 25 °C), and validated thermal resistance (R_th(j-l) = 25 °C/W in SMB) - critical for high-reliability, conduction-loss-sensitive SMPS designs.

Technical Context

This Schottky rectifier operates as a unidirectional, low-loss freewheeling or output rectification device in synchronous and non-synchronous switch-mode topologies. Its metal–semiconductor junction enables zero minority-carrier storage, eliminating reverse recovery time and associated switching loss.

Thermal performance is defined by package-specific R_th(j-l) (25 °C/W for SMB) and R_th(j-a) (80 °C/W on 1.5 cm² copper), with derating curves confirming sustained 2 A average forward current up to 125 °C ambient at 50% duty cycle. Avalanche capability is specified for transient energy absorption under inductive load conditions.

Key Specifications

Pinout & Package

STPS2H100U is housed in an SMB (DO-214AA) surface-mount package with two terminals: anode and cathode. The cathode is marked by a band on the package body. Thermal performance relies on solder pad copper area per lead (R_th(j-a) = 80 °C/W on 1.5 cm² FR4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-2EY100-M3/5BT and SB2100-E3/54, STPS2H100U provides superior thermal headroom (175 °C vs. ≤150 °C), lower conduction loss (0.65 V vs. ≥0.72 V), and guaranteed avalanche ruggedness - making it the preferred choice for industrial and telecom power where long-term reliability and transient robustness are mandatory.

Availability

STPS2H100U is available at Aetrix Electronics and suitable for telecom power supplies, LED lighting drivers, and battery charger designs requiring stable component supply and consistent thermal performance across production batches.

Supply support for STPS2H100U 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The STPS2H100U belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion in space-constrained applications where thermal resilience and low conduction loss are critical.

FAQ

What is the maximum allowable PCB copper area per lead for optimal thermal performance?

For the STPS2H100U in SMB package, optimal thermal resistance (R_th(j-a) = 80 °C/W) is achieved with 1.5 cm² of copper per lead on FR4 board. Increasing copper area beyond 2.0 cm² yields diminishing returns; minimum recommended is 0.8 cm² to sustain 2 A average current at 70 °C ambient.

Does STPS2H100U support reflow soldering per JEDEC J-STD-020?

Yes - STPS2H100U is qualified for lead-free reflow soldering with a peak temperature of 260 °C (10-second duration), compliant with JEDEC J-STD-020D. Its ECOPACK2 construction ensures robust intermetallic formation and no voiding issues when using standard SnAgCu paste and ramp-soak-reflow profiles.

Can STPS2H100U replace a standard PN rectifier in an existing 100 V design?

Yes, provided layout accommodates SMB footprint and reverse voltage does not exceed 100 V. Unlike PN diodes, STPS2H100U has no reverse recovery charge, so it eliminates associated switching loss and EMI - but requires verification of forward voltage drop impact on output regulation and thermal margin due to different V_F vs. temperature behavior.

Is avalanche testing performed per JEDEC JESD22-A106?

Yes - ST specifies P_ARM = 173 W at t_p = 10 µs and T_j = 125 °C, measured per JEDEC JESD22-A106 (Avalanche Energy Test). This rating is validated across production lots and documented in the DS1452 datasheet, ensuring repeatable single-pulse ruggedness without degradation.