STMicroelectronics STPS20H100CFP

Overview

STPS20H100CFP from STMicroelectronics is a dual-center-tap Schottky rectifier in TO-220FPAB insulated package, rated for 100 V repetitive reverse voltage and 2 × 10 A average forward current per diode at TC = 145 °C, with typical forward voltage drop of 0.59 V at 10 A and 125 °C, designed for high-frequency SMPS in notebook adapters and on-board DC/DC converters.

For engineers reviewing the STPS20H100CFP datasheet, STPS20H100CFP pinout, STPS20H100CFP application, or STPS20H100CFP equivalent, key selection criteria include its 2000 VRMS insulation rating, avalanche-rated capability (775 W peak), low leakage (<6 mA at 125 °C), thermal resistance (Rth(j-c) = 4 °C/W), and ECOPACK®2 compliance for industrial power conversion designs.

Technical Context

This dual-diode Schottky rectifier integrates two independent anode-cathode paths sharing a common cathode terminal (center-tap configuration), enabling synchronous rectification in half-bridge or center-tapped transformer topologies. Its low VF and negligible switching losses stem from platinum-silicide barrier technology and optimized epitaxial structure.

Thermal performance is defined by junction-to-case resistance of 4 °C/W (per diode) and insulating package construction that supports safe operation up to 175 °C junction temperature while maintaining 2000 VRMS isolation between case and internal die - critical for isolated AC/DC and DC/DC systems requiring reinforced insulation.

Key Specifications

Pinout & Package

TO-220FPAB is a full-packaged, insulated variant of TO-220 with electrically isolated metal tab (2000 VRMS), designed for direct mounting to grounded heatsinks without thermal pads or insulators. The package features three leads: two anodes (A1, A2) and one common cathode (K).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS20H100CT and VS-20CPH05-M3, STPS20H100CFP uniquely delivers integrated dual-diode rectification with reinforced insulation and 100 V blocking - enabling compact, safety-compliant, single-component solutions in 48–60 V output adapters and industrial DC supplies where thermal and isolation constraints coexist.

Availability

STPS20H100CFP is available at Aetrix Electronics and suitable for notebook adapters, on-board DC/DC converters, and industrial DIN-rail power modules requiring stable component supply, long lifecycle support, and certified insulation integrity.

Supply support for STPS20H100CFP 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, specializing in power management, analog, microcontrollers, and automotive ICs with manufacturing in Europe and Asia.

This device belongs to ST's high-power Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC and isolated DC/DC conversion in consumer and industrial power supplies where low VF, avalanche ruggedness, and package-level insulation are mandatory.

FAQ

What is the maximum continuous forward current per diode for STPS20H100CFP at 145 °C case temperature?

The datasheet specifies IF(AV) = 10 A per diode at TC = 145 °C for the TO-220FPAB package. This rating assumes proper heatsinking and accounts for the package's 4 °C/W junction-to-case thermal resistance. Total device current remains 20 A when both diodes operate simultaneously under balanced loading.

Does STPS20H100CFP require external insulation when mounted to a grounded heatsink?

No - the TO-220FPAB package provides 2000 VRMS insulation between the internal die and the external metal tab, allowing direct mechanical mounting to grounded heatsinks without mica washers, silicone pads, or isolation kits. This simplifies thermal design and improves thermal transfer efficiency.

How does the avalanche rating of STPS20H100CFP improve system reliability?

With 775 W peak repetitive avalanche power at tp = 10 µs and Tj = 125 °C, this diode safely clamps inductive energy spikes during MOSFET turn-off in unclamped topologies like flyback or forward converters, preventing catastrophic failure and eliminating need for external snubbers in many designs.

Can STPS20H100CFP be used in parallel with another identical device to increase current capacity?

Parallel operation is not recommended due to mismatch in forward voltage drop (VF tolerance ±5%) and thermal coupling limitations. The device is designed for dual-diode integration within a single package; higher current requirements should be addressed via larger single-die alternatives or topology redesign rather than paralleling.