STMicroelectronics STPS30M80CFP

Overview

STPS30M80CFP from STMicroelectronics is a dual common-cathode Schottky rectifier in insulated TO-220FPAB package, rated for 80 V repetitive peak reverse voltage and 2 × 15 A average forward current per diode at Tc = 110 °C. It delivers low forward voltage drop (0.490 V typ. at 15 A, 125 °C) and low leakage current (7 µA typ. at 80 V, 125 °C), enabling high-efficiency operation in AC/DC adapters for LCD TVs and game stations.

For engineers reviewing the STPS30M80CFP datasheet, STPS30M80CFP pinout, STPS30M80CFP application, or STPS30M80CFP equivalent, key selection criteria include its 2000 V insulation rating, 45 pF package capacitance, avalanche energy capability (9500 W, tp = 1 µs), junction-to-case thermal resistance (5.20 °C/W per diode), and suitability for high-frequency switch-mode power supplies with tight thermal constraints.

Technical Context

This dual Schottky rectifier integrates two independent anodes (A1, A2) sharing a single cathode (K) in a thermally isolated, electrically insulated TO-220FPAB housing. Its design targets high-frequency secondary-side rectification where low VF and fast recovery are critical to minimize conduction loss and EMI.

The device features specified avalanche capability (VARM = 100 V, IAR < 28.2 A, tp < 1 µs) and operates up to 175 °C junction temperature. Thermal coupling between diodes is quantified via Rth(c) = 3.10 °C/W, enabling accurate multi-diode loss modeling under simultaneous conduction.

Key Specifications

Pinout & Package

STPS30M80CFP uses the TO-220FPAB package: insulated plastic housing with metal tab isolated from internal leads by molded barrier, 2000 V dielectric strength, 45 pF inter-terminal capacitance, 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 STPS30M80CFP, STPS30H100CG-TR offers higher voltage rating and better thermal performance but lacks insulation and requires larger PCB area; MBR30H100CT provides lower thermal resistance but sacrifices safety isolation and exhibits higher forward drop, increasing losses in high-current adapter applications.

Availability

STPS30M80CFP is available at Aetrix Electronics and suitable for LCD TV adapters, notebook AC/DC supplies, and game console external power units requiring stable component supply, reinforced isolation, and high-temperature reliability.

Supply support for STPS30M80CFP 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.

STPS30M80CFP belongs to ST's Power Schottky Rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact AC/DC adapters where thermal management and safety isolation are critical.

FAQ

What is the maximum continuous forward current per diode for STPS30M80CFP at 110 °C case temperature?

The STPS30M80CFP supports 15 A average forward current per diode when mounted on a heatsink maintaining Tc = 110 °C, as specified in Table 2 of the official datasheet (Doc ID 018722 Rev 1). This rating assumes δ = 0.5 duty cycle and accounts for thermal derating in the insulated TO-220FPAB package.

Does STPS30M80CFP require an insulating pad when mounted to a heatsink?

No - the TO-220FPAB package incorporates built-in electrical insulation between the metal tab and internal leads, rated for 2000 V. Mounting directly to a grounded heatsink is permitted without additional insulating hardware, simplifying mechanical assembly and improving thermal path consistency.

How does the avalanche capability of STPS30M80CFP improve system robustness?

The device is characterized for 9500 W repetitive peak avalanche power (tp = 1 µs) and 100 V maximum repetitive avalanche voltage, enabling it to safely absorb transient energy during transformer reset overshoot or output short-circuit events in unclamped flyback converters without parametric shift or failure.

Can STPS30M80CFP replace STPS30M80CT in existing designs?

Yes, with mechanical and thermal redesign: both share identical electrical specs, but STPS30M80CFP uses insulated TO-220FPAB (5.20 °C/W j-c) versus non-insulated TO-220AB (1.60 °C/W j-c) in STPS30M80CT. Heatsink interface, mounting torque (0.4–0.6 N·m), and creepage distance must be revalidated for safety compliance.