Diodes Incorporated MBR20H100CT-E1

Overview

MBR20H100CT-E1 from Diodes Incorporated is a high-voltage dual Schottky rectifier in TO-220-3 package, rated for 100 V reverse voltage, 10 A average forward current per diode leg (20 A total), and 0.77 V max forward voltage at 10 A and +25°C. It operates up to +175°C junction temperature and features guard-ring stress protection for reliability in switch-mode power supplies.

For engineers reviewing the MBR20H100CT-E1 datasheet, MBR20H100CT-E1 pinout, MBR20H100CT-E1 application, or MBR20H100CT-E1 equivalent, key selection criteria include low VF at high current, low IR leakage at elevated temperature, thermal resistance (RθJC = 2.0°C/W), and RoHS-compliant lead-free finish in a standard through-hole power package.

Technical Context

This dual common-cathode Schottky rectifier integrates two independent 100 V, 10 A diode legs sharing a single cathode terminal (Pin 2), enabling synchronous output rectification in center-tapped or dual-output DC/DC converters. Its low forward voltage minimizes conduction loss, while its 10,000 V/µs dv/dt rating supports stable operation in high-frequency switching topologies.

The device uses planar Schottky barrier construction with guard-ring termination to suppress edge breakdown and ensure robustness under repetitive surge conditions (IFSM = 250 A). Thermal performance is optimized for mounting on heatsinks, with RθJC of 2.0°C/W enabling efficient junction-to-case heat transfer in TO-220-3 configuration.

Key Specifications

Pinout & Package

Package: TO-220-3 (2), molded plastic case with matte tin-plated copper leadframe, RoHS-compliant and halogen-free ("Green"). Weight: 1.95 g. UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBR20100CT and MBR20100CT, MBR20H100CT-E1 delivers lower VF and superior thermal resistance in a fully RoHS- and halogen-free package-making it optimal for high-efficiency, globally compliant power supplies where thermal headroom and regulatory alignment are critical.

Availability

MBR20H100CT-E1 is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, telecom power bricks, and LED driver secondary-side rectification requiring stable component supply and long-term lifecycle support.

Supply support for MBR20H100CT-E1 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance power management, signal integrity, and protection solutions for industrial, computing, and communications markets.

MBR20H100CT-E1 belongs to Diodes' high-voltage Schottky rectifier product line, engineered specifically for high-frequency, high-efficiency AC-DC and DC-DC power conversion where low VF, low IR, and rugged thermal performance are essential.

FAQ

What is the maximum allowable case temperature for continuous operation?

The MBR20H100CT-E1 supports continuous operation up to TC = +162°C, as specified in the Absolute Maximum Ratings table. At this case temperature, each diode leg delivers its full 10 A IF(AV) rating. Exceeding +162°C requires linear derating per the IF(AV) vs. TC curve in Figure 4 of the datasheet, with zero current allowed above +175°C junction temperature.

Can MBR20H100CT-E1 be used in place of a single 20 A Schottky diode?

No-it is a dual-diode device with two independent 10 A anodes and one shared cathode. It cannot replace a single-anode, single-cathode 20 A Schottky. However, it replaces two separate 10 A Schottky diodes in common-cathode configurations, saving PCB space and ensuring matched thermal and electrical characteristics between legs.

Is the TO-220-3 package electrically insulated?

No-the TO-220-3 (2) package used for MBR20H100CT-E1 has an electrically conductive metal tab (Pin 2, cathode) that is internally connected to the cathode terminal. Electrical isolation requires insulating hardware (e.g., shoulder washers, mica pads) and isolated mounting screws when attaching to a heatsink referenced to system ground or another potential.

What is the meaning of the "E1" suffix in the part number?

The "E1" suffix denotes Diodes Incorporated's RoHS-compliant, lead-free finish per EU Directive 2011/65/EU (RoHS 2), with matte tin plating over copper leadframe. It confirms compliance with halogen-free ("Green") requirements (<900 ppm Br/Cl, <1000 ppm Sb) and qualifies the device for use in environmentally regulated end equipment.