STMicroelectronics STPS30H60CT

Overview

STPS30H60CT from STMicroelectronics is a dual common-cathode Schottky rectifier in TO-220AB package, rated for 60 V reverse voltage, 15 A average forward current per diode (30 A total), and 175 °C maximum junction temperature. It delivers low forward voltage drop (typ. 0.535 V at 15 A, 25 °C) and low leakage (60 µA at 25 °C), enabling high-efficiency operation in notebook and LCD power adapters.

For engineers reviewing the STPS30H60CT datasheet, STPS30H60CT pinout, STPS30H60CT application, or STPS30H60CT equivalent, this device is selected for high-frequency SMPS secondary-side rectification where thermal robustness, avalanche rating, and conduction loss minimization are critical design constraints.

Technical Context

This dual Schottky rectifier integrates two independent anodes sharing a common cathode terminal, configured for synchronous or interleaved output rectification. Its silicon carbide–free Schottky architecture achieves low VF/IR trade-off without PN-junction recovery losses, supporting switching frequencies beyond 500 kHz.

Thermal design relies on case-conduction cooling: R_th(j–c) is 1.5 °C/W per diode (0.8 °C/W total package) under TO-220AB mounting. Avalanche-rated capability (10.2 kW peak pulse power at 1 µs) enables robustness against transient overvoltage events in unregulated flyback or LLC resonant topologies.

Key Specifications

Pinout & Package

Package: TO-220AB - Through-hole, 3-pin, insulated tab, epoxy-molded plastic housing compliant with 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 Schottky rectifier applications.

Compared with VS-30CPH06 and MBR3060CT, STPS30H60CT offers superior thermal margin (175 °C vs. ≤150 °C), lowest forward drop in its class, and verified avalanche ruggedness-making it optimal for thermally dense, high-reliability adapter designs.

Availability

STPS30H60CT is available at Aetrix Electronics and suitable for notebook adapters, LCD monitor power supplies, and desktop PC ATX PSUs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for STPS30H60CT 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.

The STPS series targets high-efficiency AC-DC and DC-DC conversion systems, with emphasis on low-loss Schottky rectification for switch-mode power supplies operating at 100 kHz–1 MHz.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STPS30H60CT supports continuous operation with case temperature (T_c) up to 155 °C when delivering 15 A per diode, as specified in Table 2. Exceeding this requires derating per Figure 2; at T_c = 125 °C, I_F(AV) drops to ~12.5 A per diode. Thermal interface material and heatsink contact resistance must be controlled to maintain this limit.

Is the STPS30H60CT suitable for synchronous rectification circuits?

No - STPS30H60CT is a passive Schottky rectifier, not a synchronous rectifier IC. It replaces MOSFET-based synchronous rectifiers in simpler designs but lacks gate drive control logic. Its zero reverse recovery enables clean commutation in quasi-resonant and LLC converters without external timing circuitry.

Does the TO-220AB package provide electrical isolation between tab and pins?

No - the TO-220AB package has an electrically connected metal tab (common cathode K). The tab is not insulated; mounting requires isolation hardware (e.g., mica washer + shoulder washer) if the heatsink is grounded or at non-cathode potential.

How does the avalanche rating impact reliability in flyback converters?

The 10.2 kW avalanche capability (at 1 µs) allows the STPS30H60CT to absorb energy from leakage inductance spikes without failure. In flyback designs, this eliminates reliance on TVS diodes or RCD snubbers for clamp protection, reducing component count and improving long-term reliability under repeated transient stress.