Diodes Incorporated SBR40U60CT-G

Overview

SBR40U60CT-G from Diodes Incorporated is a 40A dual common-cathode Super Barrier Rectifier rated for 60V peak reverse voltage, featuring ultra-low forward voltage (0.57V at 20A/125°C), low leakage (0.5mA at 60V/125°C), and 150°C junction operation - deployed in high-efficiency AC/DC secondary-side rectification for telecom power supplies and industrial SMPS.

For engineers reviewing the SBR40U60CT-G datasheet, SBR40U60CT-G pinout, SBR40U60CT-G application, or SBR40U60CT-G equivalent, key selection criteria include forward voltage vs. temperature stability, surge current capability (280A IFSM), thermal resistance (2°C/W), and TO-220AB package compatibility with heatsink-mounting requirements in high-power density designs.

Technical Context

This dual-leg common-cathode rectifier integrates two independent SBR® die in a single TO-220AB thermally optimized package, enabling synchronous-like efficiency without gate drive complexity. Each leg operates up to 60V VRRM and delivers 20A average current, with soft recovery characteristics minimizing EMI in high-frequency switching converters.

The patented Super Barrier structure replaces traditional PN junctions with metal-semiconductor barriers, achieving lower VF than Schottky diodes while maintaining higher temperature stability and lower IR than standard silicon rectifiers - critical for 12V/48V output rails where conduction loss dominates thermal design.

Key Specifications

Pinout & Package

Package: TO-220AB - 3-terminal molded plastic case (UL 94V-0), with copper leadframe, matte tin-plated terminals, and 1.85g mass. Designed for vertical PCB mounting and mechanical heatsink attachment via tab (cathode-connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, low-VF rectifier applications.

Compared with SBRT40U60CT-G, SBR40U60CT-G trades 40A higher surge rating for lower unit cost, while MBR4060CTG sacrifices thermal capability and leakage performance to meet budget constraints - making SBR40U60CT-G the balanced choice for mainstream high-efficiency industrial power.

Availability

SBR40U60CT-G is available at Aetrix Electronics and suitable for telecom power supplies, industrial SMPS, server VRMs, and LED drivers requiring stable component supply, long-lifecycle support, and RoHS-compliant green packaging.

Supply support for SBR40U60CT-G 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 automotive, industrial, computing, and consumer markets with a focus on power efficiency and reliability.

The SBR® Super Barrier Rectifier product line was developed to replace conventional Schottky and fast recovery diodes in high-current, high-temperature rectification applications - delivering lower VF, superior thermal stability, and reduced EMI without gate-drive complexity.

FAQ

What is the maximum continuous current rating per anode leg of the SBR40U60CT-G?

The SBR40U60CT-G is rated for 20A average rectified output current per anode leg at TA = 75°C, with a total device rating of 40A due to its dual-leg common-cathode configuration. This rating assumes proper heatsinking to maintain junction temperature ≤150°C and accounts for thermal derating above 75°C ambient.

How does the SBR40U60CT-G differ from standard Schottky rectifiers in thermal performance?

Unlike standard Schottkys limited to 125°C junction temperature, the SBR40U60CT-G sustains full 20A/leg operation up to 150°C TJ, with VF increasing only marginally (0.55V → 0.57V) from 25°C to 125°C. Its patented barrier structure also yields lower IR at high temperature - 0.5mA at 125°C versus typical Schottky values exceeding 1.0mA.

Is the TO-220AB package of the SBR40U60CT-G compatible with standard heatsink mounting hardware?

Yes - the TO-220AB package features a flat, isolated metal tab (common cathode) designed for direct mechanical and thermal attachment to heatsinks using standard M3 screws and thermal interface materials. The tab is electrically connected to Pin 2 (cathode), and the package meets UL 94V-0 flammability requirements for safety-critical mounting.

Does the "-G" suffix in SBR40U60CT-G indicate RoHS compliance or additional environmental specifications?

The "-G" suffix denotes Diodes Incorporated's Green Molding Compound version: fully RoHS 2 compliant (2011/65/EU), lead-free, and halogen/antimony-free (<900ppm Br+Cl, <1000ppm Sb). It is not merely RoHS-compliant but exceeds standard requirements with verified green chemistry - confirmed in Diodes' AP02002 material declarations and IPC-1752A reports.