Diodes Incorporated SBR20A40CTFP-G

Overview

SBR20A40CTFP-G from Diodes Incorporated is a 20A, 40V dual common-cathode Super Barrier Rectifier in ITO-220AB package, featuring low forward voltage (0.47 V @ 20A, 25°C), soft fast switching, and high-temperature stability up to +150°C. It replaces conventional Schottky diodes in high-efficiency DC/DC converters, OR-ing circuits, and 12V/24V automotive power supplies.

For engineers reviewing the SBR20A40CTFP-G datasheet, SBR20A40CTFP-G pinout, SBR20A40CTFP-G application, or SBR20A40CTFP-G equivalent, key selection criteria include its 0.41–0.60 V forward voltage range across temperature, 180 A non-repetitive surge rating, 2000 V isolation (ITO-220AB only), and RoHS-compliant, halogen-free green construction.

Technical Context

This dual-element rectifier integrates two independent anode terminals sharing one cathode, enabling synchronous OR-ing or dual-input redundancy. Its patented Super Barrier structure delivers lower VF than standard Schottkys while maintaining superior thermal stability and leakage control.

Unlike conventional Schottky diodes, it exhibits minimal VF increase with temperature - only 0.06 V rise from 25°C to 125°C at 10A - and maintains <100 µA reverse leakage at 125°C under full 40V blocking, supporting reliable operation in thermally constrained industrial and automotive environments.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with electrically isolated tab (2000 V AC isolation), matte tin-plated copper leadframe, UL 94V-0 molded plastic body, weight ≈1.65 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH04-M3 and MUR2040CT, SBR20A40CTFP-G offers the lowest VF at elevated temperature and built-in 2000 V isolation - critical for safety-certified industrial and telecom power stages where thermal management and creepage/clearance are constrained.

Availability

SBR20A40CTFP-G is available at Aetrix Electronics and suitable for server OR-ing circuits, automotive DC/DC converters, and industrial UPS chargers requiring stable component supply, long-lifecycle support, and RoHS-compliant green packaging.

Supply support for SBR20A40CTFP-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, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The SBR® Super Barrier Rectifier product line targets high-efficiency power conversion in space- and thermally-constrained applications, emphasizing low VF, soft switching, and robust high-temperature reliability beyond standard Schottky limits.

FAQ

What is the difference between SBR20A40CTFP-G and SBR20A40CT-G?

The SBR20A40CTFP-G uses the ITO-220AB package with electrically isolated tab (2000 V AC isolation), while SBR20A40CT-G uses standard TO-220AB with conductive tab. Both share identical electrical specs, but ITO-220AB enables safer mounting to grounded heatsinks in isolated topologies without additional insulating hardware.

Can SBR20A40CTFP-G be used in place of a standard Schottky diode?

Yes - it directly replaces 40V/20A Schottky diodes like SB2040CT, offering lower VF at high temperature and improved thermal stability. However, verify layout clearance for ITO-220AB's insulated tab and confirm that soft switching meets EMI requirements in your specific topology.

What is the maximum continuous junction temperature for this device?

The absolute maximum junction temperature is +150°C, and the device is rated for continuous operation at TJ = 150°C when TC ≤ 110°C. Derating curves in DS30963 show usable current down to ~12 A at TC = 110°C, confirming robust high-temperature capability.

Is the "-G" suffix strictly required for RoHS compliance?

No - all SBR20A40 variants (with or without "-G") are RoHS compliant per EU Directive 2011/65/EU. The "-G" suffix specifically denotes halogen- and antimony-free "Green" molding compound (<900 ppm Br/Cl, <1000 ppm Sb), satisfying stricter environmental mandates beyond baseline RoHS.