STMicroelectronics STPS15M80CFP

Overview

STPS15M80CFP from STMicroelectronics is a dual common-cathode Schottky rectifier in insulated TO-220FPAB package, rated for 80 V repetitive peak reverse voltage and 2 × 7.5 A average forward current per diode at Tc = 140 °C, with typical forward voltage of 445 mV at low load - optimized for high-frequency SMPS in notebook adapters and LCD TV power supplies.

For engineers reviewing the STPS15M80CFP datasheet, STPS15M80CFP pinout, STPS15M80CFP application, or STPS15M80CFP equivalent, key selection criteria include its 2000 V insulation rating, 45 pF package capacitance, avalanche capability (100 V, 1 µs), low leakage (<25 µA @ 25 °C), and thermal resistance (Rth(j-c) = 5.80 °C/W per diode).

Technical Context

This dual Schottky rectifier integrates two independent anodes sharing a common cathode terminal, enabling synchronous or interleaved output rectification in dual-rail or center-tapped topologies. Its TO-220FPAB package provides reinforced electrical isolation (2000 V) and thermal coupling via insulated tab, supporting conduction-cooled mounting without additional insulators.

The device features specified avalanche energy handling (5400 W peak, 1 µs), validated per AN1768/AN2025, and operates up to 175 °C junction temperature. Forward voltage exhibits strong negative temperature coefficient (0.445 V typ. @ 125 °C, IF = 7.5 A), improving efficiency under thermal stress.

Key Specifications

Pinout & Package

STPS15M80CFP uses the TO-220FPAB package: insulated plastic body with metal tab electrically isolated from internal die, 2000 V AC isolation rating, 2.0 g mass, and recommended mounting torque of 0.4–0.6 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-15CTQ080 and MBR1680CT, STPS15M80CFP uniquely combines certified 2000 V isolation, low 445 mV VF at operating temperature, and documented avalanche ruggedness - making it the only choice for compact, isolated, high-efficiency SMPS where thermal and safety margins are constrained.

Availability

STPS15M80CFP is available at Aetrix Electronics and suitable for notebook adapters, LCD TV power supplies, game console bricks, and desktop external PSUs requiring stable component supply, long-term lifecycle support, and compliance with IEC/EN 62368-1 insulation requirements.

Supply support for STPS15M80CFP 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STPS15M80CFP belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC and DC/DC conversion in space-constrained consumer power supplies.

FAQ

What is the maximum continuous forward current per diode at 125 °C case temperature?

The STPS15M80CFP is rated for 7.5 A average forward current per diode at Tc = 140 °C. At Tc = 125 °C, derating curves (Figure 3) show it supports ≥8.2 A per diode with δ = 0.5 duty cycle. This reflects improved thermal headroom at lower case temperatures, enabling higher output power in thermally optimized layouts.

Does STPS15M80CFP require a thermal pad or insulator when mounted to a grounded heatsink?

No - the TO-220FPAB package provides 2000 V AC electrical isolation between the metal tab and internal die. Direct mounting to a grounded metal heatsink is permitted without mica pads or silicone insulators, simplifying assembly and improving thermal transfer efficiency by eliminating interfacial resistance.

How does the avalanche capability of STPS15M80CFP compare to standard Schottky rectifiers?

Unlike most Schottky rectifiers, STPS15M80CFP has fully specified avalanche parameters: VARM = 100 V (tp < 1 µs, Tj < 150 °C) and PARM = 5400 W peak. This is validated per application notes AN1768 and AN2025, ensuring reliable operation during transient overvoltage events without degradation - a critical advantage in unregulated or loosely coupled transformer designs.

Can STPS15M80CFP replace STPS15M80CT in an existing design?

Yes, with mechanical and thermal considerations: both share identical die and electrical specs, but STPS15M80CFP uses insulated TO-220FPAB (vs. conductive TO-220AB). Replacement requires verifying heatsink isolation compatibility and adjusting mounting torque (0.4–0.6 N·m) due to different tab geometry and insulation layer stiffness.