Diodes Incorporated SBRT40V100CTE

Overview

SBRT40V100CTE from Diodes Incorporated is a 40A dual common-cathode Trench Super Barrier Rectifier (SBR®) in TO-262 package, rated for 100V peak repetitive reverse voltage, with max 0.73V forward voltage at 20A/25°C and 0.65V at 20A/125°C, designed as a high-efficiency rectifier or freewheel diode in DC-DC converters and AC-DC adapters.

For engineers reviewing the SBRT40V100CTE datasheet, SBRT40V100CTE pinout, SBRT40V100CTE application, or SBRT40V100CTE equivalent, key selection criteria include high-temperature reverse leakage stability (≤45mA at 125°C), low thermal resistance (3.3°C/W junction-to-case), and compatibility with lead-free reflow profiles in industrial power supplies.

Technical Context

This dual-diode SBR device uses patented trench-based super barrier technology to achieve ultra-low forward voltage while maintaining tight control over reverse leakage across temperature - critical for thermal runaway mitigation in high-density power stages. Its common-cathode configuration supports synchronous rectification topologies where shared cathode routing simplifies PCB layout.

The TO-262 package provides enhanced thermal performance over TO-220AB (RθJC = 3.3°C/W vs. 2.0°C/W with heatsink), enabling higher continuous current capability in constrained thermal environments without forced airflow. Device operation is specified from –55°C to +150°C, supporting extended industrial temperature requirements.

Key Specifications

Pinout & Package

SBRT40V100CTE is housed in a TO-262 (I²PAK) surface-mount compatible package with three terminals: two anodes (A1, A2) and one common cathode (K). The package features a copper leadframe, green molding compound (UL 94V-0), and matte tin-plated terminals compliant with MIL-STD-202 solderability standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT40V100CTE, the TO-220AB variant offers superior heatsink interface but requires more PCB real estate, while the Vishay alternative trades leakage stability for marginally lower VF - making SBRT40V100CTE optimal for thermally aggressive, space-constrained industrial power designs.

Availability

SBRT40V100CTE is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial motor drives requiring stable component supply with guaranteed long-term manufacturability and RoHS/Green compliance.

Supply support for SBRT40V100CTE 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 was developed specifically for high-efficiency, high-reliability power conversion in industrial, computing, and consumer power supplies - emphasizing low VF, controlled IR, and rugged packaging.

FAQ

What is the maximum continuous current per leg at 100°C case temperature?

At TC = 100°C, the SBRT40V100CTE supports 14.5A per leg continuously, derived from the Figure 5 derating curve (20A at 30°C case → linear reduction to 0A at 150°C). This assumes use of the specified 2″×2″ Al board + 50mm×50mm×23mm heatsink per datasheet Note 7.

Is SBRT40V100CTE suitable for synchronous rectification circuits?

Yes - its low VF and fast recovery characteristics (no specified trr but typical SBR devices exhibit <50ns reverse recovery time) make it suitable for synchronous rectification in DC-DC converters up to 500kHz. However, external gate control is required since it is a passive diode, not an integrated MOSFET-based SR controller.

Does the TO-262 package require wave soldering or can it be reflowed?

The SBRT40V100CTE's matte tin finish and green molding compound are qualified for lead-free reflow soldering per J-STD-020, with peak temperature up to 260°C. Wave soldering is not recommended due to thermal mass and potential delamination risk - reflow is the preferred process for TO-262 surface-mount assembly.

How does the SBR® technology differ from standard Schottky rectifiers?

SBR® uses a trench-etched barrier structure that combines low forward voltage like Schottky diodes with significantly improved reverse leakage and temperature stability - unlike planar Schottkys, which suffer exponential IR increase above 85°C. This enables reliable operation at 125°C junction temperature without thermal runaway.