Diodes Incorporated SBR20U60CT

Overview

SBR20U60CT from Diodes Incorporated is a 20A dual common-cathode super barrier rectifier in TO-220AB package, rated for 60V peak reverse voltage, with typical forward voltage of 0.47V at 10A/25°C and 0.57V at 10A/125°C, designed for high-efficiency AC/DC and DC/DC secondary-side rectification in industrial power supplies.

For engineers reviewing the SBR20U60CT datasheet, SBR20U60CT pinout, SBR20U60CT application, or SBR20U60CT equivalent, key selection criteria include low VF stability over temperature, soft-switching behavior to reduce EMI, 200A non-repetitive surge rating, and RoHS-compliant matte tin terminations on copper leadframe.

Technical Context

This dual-diode rectifier integrates two identical super barrier elements sharing a common cathode terminal, enabling synchronous half-wave or center-tapped full-wave configurations. Its patented super barrier structure replaces traditional PN junctions with metal-semiconductor interfaces, delivering lower forward voltage than Schottky diodes while maintaining higher thermal stability and reduced leakage at elevated temperatures.

The device operates across –65°C to +150°C junction range, with thermal resistance R_θJC = 2°C/W per leg (TO-220AB), supporting high-power density designs where heatsink-limited conduction loss must be minimized. Reverse leakage remains ≤100µA at 60V/125°C - significantly lower than comparable Schottkys - enabling reliable operation in thermally constrained environments.

Key Specifications

Pinout & Package

Package: TO-220AB - Insulated plastic case with UL 94V-0 flammability rating, 1.85g weight, matte tin-plated copper leadframe solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH06, SBR20U60CT offers lower profile and cost-effective TO-220AB mounting, while MUR2060CT trades 0.6V higher VF for better 600V-class leakage control - making SBR20U60CT optimal for 48–60V high-efficiency, thermally constrained rectification.

Availability

SBR20U60CT is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, telecom rectifiers, and LED streetlight drivers requiring stable component supply and long-term industrial lifecycle support.

Supply support for SBR20U60CT 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, headquartered in Plano, Texas, serving industrial, computing, communications, and consumer markets with high-reliability components.

The SBR® (Super Barrier Rectifier) product line was developed to replace Schottky diodes in medium-voltage rectification where thermal stability and low leakage are critical - targeting 20–100V applications in power supplies and motor controls.

FAQ

What is the maximum junction temperature for continuous operation?

The SBR20U60CT supports continuous operation up to +150°C junction temperature, with derating required above +110°C case temperature. Its thermal resistance of 2°C/W per leg allows direct calculation of allowable power dissipation based on heatsink performance and ambient conditions.

Is SBR20U60CT pin-compatible with standard TO-220AB dual diodes?

Yes - SBR20U60CT uses standard TO-220AB mechanical outline with Anode-Cathode-Anode pin assignment (Pins 1–2–3). It replaces legacy dual Schottky or fast recovery diodes without PCB layout changes, provided thermal design accounts for its lower VF and higher surge capability.

How does its soft switching behavior affect EMI in high-frequency converters?

Its soft, fast switching eliminates minority-carrier tail current, reducing di/dt-induced voltage spikes and high-frequency ringing. Measured EMI profiles show 8–10 dB lower noise in 30–100 MHz band compared to ultrafast rectifiers at 300 kHz switching frequency, easing compliance with CISPR-32 Class B limits.

Can it be used in parallel for higher current applications?

Parallel operation is not recommended due to mismatched forward voltage characteristics between units. For >20A requirements, use a single higher-rated device (e.g., SBR30U60CT) or redesign with interleaved phases - both ensure balanced current sharing and thermal distribution without external ballasting.