Diodes Incorporated SBR20100CT

Overview

SBR20100CT from Diodes Incorporated is a 20A dual common-cathode Super Barrier Rectifier with 100V peak repetitive reverse voltage, 0.82V max forward voltage at 10A/25°C, and 0.1mA max reverse leakage at 100V/25°C. It serves as a high-efficiency, thermally stable rectifier or freewheel diode in DC-DC converters and AC-DC adapters.

For engineers reviewing the SBR20100CT datasheet, SBR20100CT pinout, SBR20100CT application, or SBR20100CT equivalent, key selection criteria include its low VF stability across temperature, rugged avalanche capability (10mJ EAS), TO220AB package thermal resistance (2°C/W), and compliance with RoHS and halogen-free "Green" requirements.

Technical Context

The SBR20100CT integrates patented SBR® technology to deliver Schottky-like forward conduction with enhanced avalanche robustness-enabling reliable operation under transient overvoltage stress. Its dual-leg configuration supports independent 10A per leg (20A total) rectification with common-cathode topology for synchronous buck or center-tapped transformer designs.

Thermal performance is defined by R_θJC = 2°C/W (TO220AB) and operation up to +175°C junction temperature. Reverse leakage remains tightly controlled (<10mA at 125°C), mitigating thermal runaway risk in high-temperature power supplies.

Key Specifications

Pinout & Package

Package: TO220AB - Molded plastic case, UL 94V-0 rated, matte tin-plated copper leadframe, 1.85g weight, isolated tab (electrically connected to cathode).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT20100CT, the SBR20100CT offers lower thermal resistance but lacks isolation; versus MBR20100CT, it delivers superior high-temperature leakage control and proven avalanche survivability-critical for unregulated or surge-prone inputs.

Availability

SBR20100CT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant "Green" packaging.

Supply support for SBR20100CT 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-reliability power management and signal integrity solutions for industrial, computing, and consumer markets.

The SBR® Super Barrier Rectifier product line targets high-efficiency, high-temperature power conversion applications where Schottky limitations-leakage, avalanche fragility, and thermal instability-must be overcome without resorting to slower, higher-VF PN diodes.

FAQ

What is the maximum junction temperature rating for SBR20100CT?

The SBR20100CT is rated for continuous operation from –65°C to +175°C junction temperature. This wide range enables use in under-hood automotive modules, industrial motor drives, and sealed power supplies where ambient temperatures exceed 105°C. Thermal derating begins above +25°C case temperature per the published forward current curve.

Is the TO220AB tab electrically isolated in SBR20100CT?

No-the TO220AB tab in the SBR20100CT is electrically connected to the common cathode (Pin 2). It must be mounted to a heatsink using an insulating pad or shoulder washer if electrical isolation from chassis ground is required. For isolated-tab alternatives, consider the SBRT20100CT in ITO220AB package.

How does SBR20100CT compare to standard Schottky rectifiers in high-temperature operation?

At +125°C, SBR20100CT exhibits ≤10mA reverse leakage at 100V, whereas comparable Schottkys (e.g., MBR20100CT) typically exceed 100mA. Its patented SBR® structure also provides 10mJ non-repetitive avalanche energy-unavailable in Schottkys-making it resilient to voltage spikes in poorly filtered inputs.

Can SBR20100CT replace two separate 10A Schottky diodes in a dual-output supply?

Yes-its dual common-cathode configuration allows direct substitution for two discrete 10A Schottkys sharing a common output rail. Pin 1 and Pin 3 serve as independent anodes, while Pin 2 (and the tab) forms the unified cathode node. Layout simplification and reduced parasitic inductance are confirmed benefits per Diodes' application notes AN-5001 and AN-5003.