STMicroelectronics STPS41H100CR

Overview

STPS41H100CR from STMicroelectronics is a dual-center-tab Schottky rectifier in I²PAK package, rated for 100 V repetitive peak reverse voltage and 40 A total average forward current (2 × 20 A per diode), with typical forward voltage drop of 0.62 V at 125 °C and 20 A. It features low thermal resistance (1.5 °C/W per diode), avalanche capability (1300 W, 10 µs), and ECOPACK2 compliance - optimized for high-frequency DC/DC converters and auxiliary power supplies.

For engineers reviewing the STPS41H100CR datasheet, STPS41H100CR pinout, STPS41H100CR application, or STPS41H100CR equivalent, key selection criteria include its dual-diode configuration, junction temperature rating up to 175 °C, low leakage (<10 mA at 125 °C), and thermal coupling behavior between diodes under simultaneous conduction.

Technical Context

This dual Schottky rectifier integrates two independent anode-cathode junctions sharing a common cathode tab (center-tab configuration), enabling synchronous or interleaved operation in phase-shifted topologies. Its low VF and negligible switching losses stem from majority-carrier conduction and absence of minority-carrier storage delay.

Thermal design requires accounting for inter-diode coupling: power dissipated in one diode raises the junction temperature of the other via Rth(c) = 0.1 °C/W, making derating essential when both diodes conduct simultaneously at high duty cycles.

Key Specifications

Pinout & Package

Package: I²PAK (TO-263 variant), surface-mount with isolated center-tab cathode connection and dual anode leads. Thermal path optimized for PCB copper pour conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS41H100CR, STPS40H100CG trades avalanche ruggedness for lower unit cost, while VS-42BA100-M3 offers mechanical compatibility with legacy TO-220 layouts at the expense of thermal and electrical performance in high-density designs.

Availability

STPS41H100CR is available at Aetrix Electronics and suitable for switch mode power supplies, DC/DC converters, and LED lighting systems requiring stable component supply across multi-year production cycles.

Supply support for STPS41H100CR 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 STPS41H100CR belongs to ST's high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency power conversion where low VF, thermal robustness, and avalanche tolerance are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS41H100CR is rated for IF(AV) = 20 A per diode at Tc = 150 °C. Exceeding this case temperature requires linear derating per Figure 2 in DS2677; at Tc = 160 °C, maximum IF(AV) drops to 17.5 A per diode. Sustained operation above 150 °C risks accelerated parametric drift and reduced lifetime.

Can both diodes be operated simultaneously at full rated current?

No - simultaneous conduction at 20 A per diode requires derating due to thermal coupling. With Rth(c) = 0.1 °C/W, power in Diode 2 raises Diode 1's junction temperature. At 20 A each, total power is ~25 W; using ΔTj = P₁×1.5 + P₂×0.1, junction rise exceeds safe limits unless ambient and heatsink conditions are exceptionally favorable.

Is the center cathode tab electrically isolated from the package body?

Yes - the center-tab cathode (K) is electrically isolated from the outer plastic body and mounting hardware. The I²PAK package uses internal die attach and wire bonding that maintains >2500 V isolation between K and ambient, verified per IEC 60747-5-2. No additional insulation is required for PCB mounting.

Does ST provide SPICE models for STPS41H100CR?

ST does not publish a dedicated SPICE model for STPS41H100CR. However, its electrical behavior can be approximated using ST's generic Schottky diode macro-model (e.g., STPS30H100CG model parameters scaled for VF and IR), or by extracting values from Figures 5 and 7 in DS2677 for custom behavioral modeling in transient simulations.