STMicroelectronics STPS20L60CTN

Overview

STPS20L60CTN from STMicroelectronics is a dual-center-tab Schottky rectifier optimized for high-frequency SMPS and DC/DC converters, featuring 60 V reverse voltage rating, 2 × 10 A average forward current per diode, 0.48 V typical forward voltage at 125 °C, 150 °C maximum junction temperature, and TO-220AB package with low thermal resistance (0.85 °C/W total). It enables efficient power conversion in compact AC/DC adapters and battery charging circuits.

For engineers reviewing the STPS20L60CTN datasheet, STPS20L60CTN pinout, STPS20L60CTN application, or STPS20L60CTN equivalent, key selection criteria include forward voltage drop at high temperature, avalanche energy capability (430 W), dual-diode thermal coupling behavior, and ECOPACK2-compliant packaging for industrial-grade reliability.

Technical Context

This dual Schottky rectifier integrates two independent 60 V, 10 A diodes sharing a common cathode tab in a single TO-220AB package. Its low VF (0.48 V typ. @ 125 °C, 10 A) minimizes conduction losses, while dV/dt rating of 10,000 V/µs supports fast-switching topologies without parasitic turn-on.

The device exhibits specified avalanche capability (430 W peak, 10 µs pulse), enabling robustness against transient overvoltage events in unclamped inductive switching. Thermal design leverages low Rth(j-c) of 0.85 °C/W (total) and coupling resistance of 0.1 °C/W between diodes to manage localized heating under asymmetric load conditions.

Key Specifications

Pinout & Package

STPS20L60CTN is housed in a TO-220AB package with three terminals: two anodes (A1, A2) and one shared cathode (K) on the metal tab. The package features insulated mounting hole, UL94 V0 epoxy, and recommended torque of 0.55 N·m for mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH06 and MBR2060CT, STPS20L60CTN delivers superior thermal performance (0.85 °C/W), lower conduction loss (0.48 V), and guaranteed avalanche capability-making it optimal for high-density, high-reliability 60 W–100 W AC/DC converters where efficiency and transient immunity are prioritized.

Availability

STPS20L60CTN is available at Aetrix Electronics and suitable for set-top box power supplies, battery charger output stages, and notebook adapter secondary-side rectification requiring stable component supply across extended production cycles.

Supply support for STPS20L60CTN 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STPS series targets high-efficiency power conversion, with STPS20L60CTN specifically engineered for high-frequency SMPS and DC/DC converters demanding low VF, robust thermal behavior, and avalanche-rated ruggedness.

FAQ

What is the maximum continuous forward current per diode at 100 °C case temperature?

At T_c = 100 °C, the maximum average forward current per diode is 13.5 A, derived from Figure 1 (IF(AV) vs. T_c) in DS1595 Rev 5. This value accounts for thermal derating and assumes δ = 0.5 square-wave conduction with proper heatsinking.

Is STPS20L60CTN suitable for synchronous rectification control?

Yes - its dual-anode, common-cathode configuration and negligible reverse recovery enable precise gate timing in synchronous rectifier drivers. The low V_F and absence of Q_rr allow clean turn-off without shoot-through risk, supporting PWM frequencies up to 1 MHz.

Does the TO-220AB package require insulating hardware when mounted to a grounded heatsink?

Yes - the metal tab (cathode K) is electrically active. ST recommends using an insulating washer and shoulder washer with thermal grease to maintain electrical isolation while preserving thermal performance. Mounting torque must be controlled at 0.55 N·m to avoid die cracking.

How does the 0.1 °C/W coupling resistance affect thermal design in asymmetric load conditions?

When only one diode conducts full current (e.g., 20 A), the other diode's junction experiences ~2 °C temperature rise due to coupling. This effect must be included in worst-case thermal modeling - especially in single-rail applications - to ensure neither diode exceeds 150 °C junction limit.