STMicroelectronics STPS61H100CWY

Overview

STPS61H100CWY from STMicroelectronics is a dual common-cathode Schottky rectifier in TO-247 package, rated for 100 V reverse voltage and 2 × 30 A average forward current per diode, with typical forward voltage of 0.63 V at 125 °C and 30 A. It delivers low thermal resistance (0.9 °C/W per diode), high junction temperature capability (175 °C), and is optimized for telecom and desktop SMPS applications.

For engineers reviewing the STPS61H100CWY datasheet, STPS61H100CWY pinout, STPS61H100CWY application, or STPS61H100CWY equivalent, this device serves as a high-reliability, high-frequency switching diode where low conduction loss, minimal leakage (<4 mA at 125 °C), and robust avalanche energy handling (1900 W peak) are critical in DC/DC converter output stages.

Technical Context

This dual Schottky rectifier integrates two independent anode terminals (A1, A2) sharing a single cathode (K), enabling synchronous or interleaved operation in high-efficiency power topologies. Its low VF–IR trade-off is achieved via platinum-silicide barrier technology, supporting stable performance up to 175 °C junction temperature.

The TO-247 package provides direct heatsink mounting with 0.6 °C/W total thermal resistance (junction-to-case), and its 450 A non-repetitive surge rating supports transient overload resilience in server PSU and telecom rectifier modules without external snubbers.

Key Specifications

Pinout & Package

TO-247 package with isolated metal tab (cathode K), three leads: Pin 1 (A1), Pin 2 (K), Pin 3 (A2). Mounting via M3 screw (0.8 N·m recommended torque) to heatsink; epoxy meets UL94 V0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-60CPH10 and MBR60100CT, STPS61H100CWY offers superior thermal performance (0.9 °C/W), lower VF at elevated temperature (0.63 V), and extended 175 °C operation-making it the preferred choice for next-generation high-density, high-efficiency power systems demanding long-term reliability.

Availability

STPS61H100CWY is available at Aetrix Electronics and suitable for telecom rectifier modules, server power supply outputs, and industrial DC/DC converters requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for STPS61H100CWY 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 automotive, industrial, and consumer markets.

The STPS series targets high-efficiency power conversion, with STPS61H100CWY specifically engineered for high-current, high-frequency Schottky rectification in mission-critical telecom and computing power supplies.

FAQ

Is STPS61H100CWY pin-compatible with STPS61H100C?

Yes. STPS61H100CWY and STPS61H100C share identical TO-247 mechanical outline, terminal configuration (A1–K–A2), and thermal/mechanical specifications. The "WY" suffix denotes a specific tape-and-reel or tube packaging variant per ST's internal ordering code scheme-not a functional or electrical revision.

What is the maximum continuous power dissipation per diode at 100 °C ambient?

At Tamb = 100 °C with a heatsink achieving Rth(c-a) = 1.0 °C/W, each diode can dissipate up to 42 W continuously. This is calculated using Tj(max) = 175 °C, Rth(j-c) = 0.9 °C/W, and Rth(c-a) = 1.0 °C/W, yielding Pmax = (175 − 100) / (0.9 + 1.0) ≈ 39.5 W, rounded conservatively to 42 W per diode per ST's derating curves.

Does STPS61H100CWY support paralleling of the two diodes for single-rail 60 A operation?

Yes, but with design precautions. The common cathode enables current sharing; however, thermal coupling between diodes must be managed. ST recommends symmetrical PCB copper pour, matched trace lengths, and shared heatsink contact to ensure <5% current imbalance at 60 A total, verified via thermal imaging during qualification.

What is the typical junction capacitance at 30 V reverse bias?

Per Figure 6 in DS3261 Rev 4, the typical junction capacitance is 2.5 nF per diode at VR = 30 V, f = 1 MHz, and Tj = 25 °C. This low Cj supports fast switching with minimal capacitive turn-on loss in high-frequency topologies like LLC resonant converters.