Taiwan Semiconductor Corporation TST20H60C

Overview

TST20H60C from Taiwan Semiconductor is a dual common-cathode trench Schottky rectifier rated for 20 A total forward current (10 A per diode), 60 V repetitive peak reverse voltage, and 150 °C maximum junction temperature, delivering low forward voltage (0.56 V @ 10 A, 25 °C) and high surge capability (200 A @ 8.3 ms) in SMPS and DC/DC converter applications.

For engineers reviewing the TST20H60C datasheet, TST20H60C pinout, TST20H60C application, or TST20H60C equivalent, key selection factors include dual-diode thermal coupling in TO-220AB, junction-to-case resistance of 2.7 °C/W, and verified performance at 125 °C junction temperature with <0.60 V VF max.

Technical Context

The TST20H60C integrates two independent Schottky die in a single TO-220AB package with shared cathode terminal, enabling synchronous rectification or dual-channel output in compact power supplies. Its trench-based structure ensures stable VF and IR across -55 to +150 °C operating range.

Thermal design relies on direct case-to-heatsink mounting: R_θJC = 2.7 °C/W per diode, R_θJL = 3.0 °C/W, and R_θJA = 11.4 °C/W (with 2" × 3" × 0.25" Al heatsink). Reverse leakage remains ≤28 mA at 125 °C under full 60 V VR.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal, isolated tab, matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Mounting torque ≤0.56 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH06 and MBR2060CT, the TST20H60C delivers superior thermal performance (2.7 °C/W R_θJC) and lower VF (0.56 V), making it preferred for high-density, high-temperature industrial and automotive DC/DC converters where efficiency and reliability are critical.

Availability

TST20H60C is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and on-board DC/DC converters requiring stable component supply and long-term industrial lifecycle support.

Supply support for TST20H60C 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The TST20H60C belongs to TSC's high-reliability trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in space-constrained SMPS and automotive-grade DC/DC modules.

FAQ

What is the maximum continuous forward current rating for the TST20H60C?

The TST20H60C is rated for 20 A total average forward current, with 10 A per diode. This rating assumes proper heatsinking per the datasheet's thermal derating curve and operation within the -55 to +150 °C junction temperature range. At 100 °C case temperature, the usable current drops to approximately 13 A total due to thermal limitations.

Does the TST20H60C have a common cathode or common anode configuration?

The TST20H60C uses a dual common-cathode configuration: Pin 2 is the shared cathode terminal, while Pins 1 and 3 serve as independent anodes. This layout supports parallel output rails or dual-phase rectification with a single low-inductance return path, as confirmed in the official marking diagram and mechanical outline.

What is the typical forward voltage drop of the TST20H60C at 10 A and 125 °C?

The TST20H60C exhibits a typical forward voltage of 0.52 V at 10 A and 125 °C, with a maximum of 0.60 V under those conditions. This low, temperature-stable VF is enabled by its patented trench Schottky process and directly contributes to reduced conduction losses in high-ambient-temperature applications.

Is the TST20H60C RoHS and halogen-free compliant?

Yes, the TST20H60C is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the matte tin-plated leads satisfy J-STD-002 solderability requirements-making it suitable for environmentally regulated consumer and industrial end equipment.

Can the TST20H60C replace the MBR2060CT in existing designs?

The TST20H60C is not a direct pin-compatible replacement for the MBR2060CT due to differences in forward voltage (0.56 V vs. 0.75 V), thermal resistance (2.7 vs. 4.0 °C/W), and high-temperature leakage behavior. While both use TO-220AB, redesign validation is required-especially for thermal and efficiency margins-before substituting the TST20H60C in an MBR2060CT-based layout.