Diodes Incorporated SBR20A100CTE

Overview

SBR20A100CTE from Diodes Incorporated is a 20A dual common-cathode super barrier rectifier in TO262 package, rated for 100V peak repetitive reverse voltage, with typical forward voltage of 0.64V at 10A/125°C and thermal resistance of 2°C/W junction-to-case. It serves as a high-efficiency output rectifier in AC-DC power supplies for telecom and industrial SMPS.

For engineers reviewing the SBR20A100CTE datasheet, SBR20A100CTE pinout, SBR20A100CTE application, or SBR20A100CTE equivalent, key selection criteria include forward voltage drop at elevated temperature, surge current capability (250A), thermal resistance, and TO262 mechanical compatibility with heatsink mounting.

Technical Context

This dual-anode, single-cathode configuration enables independent leg operation while sharing a common cathode terminal-ideal for center-tapped transformer secondary rectification or parallel-leg redundancy. Each leg supports 10A average forward current with derating above 85°C case temperature per Fig. 3.

The patented super barrier structure delivers lower VF than Schottky diodes at 100V rating while maintaining superior high-temperature leakage performance: IR ≤ 10mA at 100V/125°C, outperforming standard Schottkys in thermal stability and soft recovery behavior.

Key Specifications

Pinout & Package

TO262 package: 3-terminal, single-row straight-lead outline with isolated metal tab (cathode-connected) for direct heatsink attachment; UL 94V-0 molded plastic body; 1.355g weight; matte tin-plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT20A100CT and MBR20100CT, the SBR20A100CTE provides the lowest thermal resistance and best high-temperature leakage control-critical for sealed, convection-cooled, or high-ambient industrial deployments where reliability trumps marginal BOM cost savings.

Availability

SBR20A100CTE is available at Aetrix Electronics and suitable for telecom AC-DC adapters, industrial SMPS outputs, and server PSU secondary-side rectification requiring stable component supply and long-lifecycle support.

Supply support for SBR20A100CTE 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, high-reliability power conversion in telecom, computing, and industrial systems where Schottky limitations in voltage rating and thermal leakage must be overcome.

FAQ

What is the maximum allowable case temperature for continuous operation?

The device supports continuous operation up to +175°C case temperature per absolute maximum ratings. However, average forward current must be derated linearly above +85°C per Fig. 3: at +125°C TC, IO per leg is reduced to approximately 6.5A to maintain safe junction temperature and reliability.

Is the metal tab electrically isolated from the terminals?

No-the metal tab is internally connected to Pin 2 (common cathode) and must be treated as an active circuit node. When mounted to a heatsink, ensure the heatsink is either grounded or insulated per system safety requirements to avoid short circuits or ground loops.

Can SBR20A100CTE replace standard Schottky rectifiers in existing designs?

Yes, with validation: its pinout matches industry-standard TO262 dual common-cathode rectifiers, and VF is lower at elevated temperatures. However, confirm layout clearance for the metal tab and verify thermal performance, as its superior RθJC may shift thermal bottlenecks elsewhere in the system.

Does the "-G" suffix affect electrical performance?

No-the "-G" suffix denotes green (halogen-free) molding compound only; all electrical specifications, thermal characteristics, and mechanical dimensions remain identical to the base SBR20A100CTE part. RoHS compliance and solderability are unchanged.