Diodes Incorporated SBR40U100CTE

Overview

SBR40U100CTE from Diodes Incorporated is a 40A dual common-cathode super barrier rectifier in TO262 package, rated for 100V peak reverse voltage, with ultra-low 0.72V typical forward voltage at 20A/25°C and 150°C maximum junction temperature - used in high-efficiency AC-DC front-end rectification for industrial power supplies.

For engineers reviewing the SBR40U100CTE datasheet, SBR40U100CTE pinout, SBR40U100CTE application, or SBR40U100CTE equivalent, key selection criteria include per-leg forward voltage at elevated temperature, thermal resistance (3°C/W junction-to-case), surge current rating (240A), and TO262 mechanical compatibility with heatsink mounting.

Technical Context

This dual-anode, single-common-cathode configuration enables independent leg operation in center-tapped transformer or parallel rectifier topologies. Each leg supports 20A average forward current with soft, fast switching to reduce EMI in high-frequency SMPS designs.

The patented Super Barrier Rectifier (SBR®) structure replaces traditional PN junctions with a low-barrier metal-semiconductor interface, delivering lower VF than Schottky diodes while maintaining higher temperature stability and leakage performance up to 150°C junction.

Key Specifications

Pinout & Package

TO262 package: 3-terminal, straight lead, isolated tab (cathode-connected tab), RoHS-compliant matte tin finish on copper leadframe, UL 94V-0 molded plastic case weighing ~1.355 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-40CPH01-M3 and MUR4010CT, SBR40U100CTE delivers superior thermal performance (3°C/W), lower conduction loss (0.72V), and softer switching - making it optimal for compact, high-efficiency, low-EMI industrial and server power designs where TO262 mechanical fit is required.

Availability

SBR40U100CTE is available at Aetrix Electronics and suitable for industrial motor drives, server power supplies, solar microinverters, and medical imaging power systems requiring stable component supply across multi-year production cycles.

Supply support for SBR40U100CTE 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® product line was developed specifically for high-efficiency, high-temperature rectification in industrial, computing, and renewable energy power systems - emphasizing low VF, soft recovery, and rugged packaging.

FAQ

What is the thermal pad connection on the SBR40U100CTE TO262 package?

The metal tab on the underside of the TO262 package is electrically connected to Pin 2 (common cathode). It must be mounted to a grounded or cathode-potential heatsink using thermally conductive but electrically insulating hardware if isolation is required. Direct mounting without insulation ties the cathode to heatsink potential.

Can SBR40U100CTE replace a standard 100V Schottky rectifier in an existing design?

Yes, provided the PCB footprint matches TO262 and thermal design accounts for its lower VF and improved high-temperature stability. Derating curves show usable current up to 85°C ambient without forced air - unlike many Schottkys that require aggressive cooling above 60°C.

Is the SBR40U100CTE suitable for use in synchronous rectification circuits?

No - it is a passive rectifier, not a MOSFET-based synchronous device. Its soft switching and low VF make it ideal for high-frequency hard-switched topologies like LLC or active clamp forward, but it cannot be actively controlled like a gate-driven MOSFET.

Does the "-G" suffix in SBR40U100CTE-G affect electrical performance?

No - the "-G" suffix denotes green molding compound (halogen-free, compliant with IEC 61249-2-21), with identical electrical specifications, thermal performance, and mechanical dimensions as the standard version. Only material composition differs.