STMicroelectronics STPS10M80CFP

Overview

STPS10M80CFP from STMicroelectronics is a dual common-cathode Schottky rectifier in insulated TO-220FPAB package, rated for 80 V repetitive peak reverse voltage and 2 × 5 A average forward current per diode at Tc = 150 °C, with typical forward voltage drop of 465 mV at 2.5 A and 25 °C - optimized for high-frequency SMPS in notebook adapters and LCD TV power supplies.

For engineers reviewing the STPS10M80CFP datasheet, STPS10M80CFP pinout, STPS10M80CFP application, or STPS10M80CFP equivalent, this device requires attention to its insulated 2000 V isolation rating, 45 pF package capacitance, avalanche-rated 100 V peak voltage, thermal coupling between diodes, and derated current capability in TO-220FPAB versus standard TO-220AB.

Technical Context

This dual Schottky rectifier integrates two independent anode terminals (A1, A2) sharing a common cathode (K), enabling synchronous or interleaved operation in center-tapped or dual-output DC/DC converters. Its TO-220FPAB package provides electrical isolation up to 2000 V between mounting tab and internal die, critical for floating-ground topologies.

Thermal design must account for inter-diode coupling: power dissipation in one diode raises junction temperature of the other via shared case path (Rth(c) = 3.60 °C/W). Avalanche capability is specified under strict conditions - 100 V peak, tp < 1 µs, IAR < 12 A, Tj < 150 °C - and validated per AN1768/AN2025.

Key Specifications

Pinout & Package

TO-220FPAB is an insulated variant of TO-220 with electrically isolated metal tab (2000 V isolation), 3-pin single-in-line configuration, and epoxy body meeting UL94 V0. Mounting torque: 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 STPS10M80CT and VS-10BQ080-M3, STPS10M80CFP uniquely delivers dual-anode functionality with integrated 2000 V isolation and optimized VF/IR balance - essential for space-constrained, multi-rail, and thermally coupled adapter designs where component count and safety certification are critical.

Availability

STPS10M80CFP is available at Aetrix Electronics and suitable for notebook AC adapters, LCD TV power supplies, and game console auxiliary rails requiring stable component supply, long-term lifecycle support, and certified insulated packaging.

Supply support for STPS10M80CFP 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.

STPS10M80CFP belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-frequency switch-mode power supplies where low VF, low IR, thermal coupling awareness, and reinforced insulation are mandatory.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS10M80CFP supports 5 A average forward current per diode at Tc = 150 °C. Exceeding this temperature requires linear derating per Figure 3 in the datasheet; at Tc = 160 °C, IF(AV) drops to 4.7 A per diode. Thermal coupling between diodes means simultaneous operation increases effective Rth(j-c) to 4.75 °C/W total.

Can STPS10M80CFP replace STPS10M80CT in existing designs?

No direct replacement: STPS10M80CFP has insulated TO-220FPAB packaging (2000 V isolation), while STPS10M80CT uses conductive TO-220AB. Substitution requires verifying mechanical fit, thermal interface, and whether the isolation barrier is needed - e.g., if the original design mounts to a grounded heatsink without insulation, STPS10M80CT remains appropriate.

How does avalanche capability impact circuit protection?

The device is rated for 100 V repetitive peak avalanche voltage (tp < 1 µs, IAR < 12 A, Tj < 150 °C), validated per AN1768. This allows limited energy absorption during MOSFET turn-off transients in flyback converters without snubber circuits - but it is not a substitute for proper clamping design in high-energy systems.

What is the significance of the 45 pF package capacitance?

The 45 pF capacitance between terminals and insulated tab affects high-frequency behavior: it lowers impedance at switching nodes above 1 MHz, reducing EMI radiation and damping ringing. In 100–500 kHz SMPS, this value helps meet CISPR-22 Class B limits without adding external capacitors or ferrites.