Diodes Incorporated SBR10100CT

Overview

SBR10100CT from Diodes Incorporated is a 100V, 10A dual common-cathode Super Barrier Rectifier in TO-220AB package, featuring 0.80V max forward voltage at 5A per leg and 0.1mA max reverse leakage at 25°C. It serves as a high-efficiency rectifier or freewheel diode in DC-DC converters and AC-DC adapters where low conduction loss and thermal stability are critical.

For engineers reviewing the SBR10100CT datasheet, SBR10100CT pinout, SBR10100CT application, or SBR10100CT equivalent, key selection criteria include its 100V VRRM rating, dual-leg 5A/leg current capability, ultra-low VF at elevated temperature, low IR drift up to +125°C, and TO-220AB thermal resistance of 2°C/W (junction-to-case).

Technical Context

The SBR10100CT integrates two independent rectifying elements sharing a common cathode terminal, enabling synchronous half-wave or center-tapped full-wave configurations. Its patented SBR® technology replaces conventional Schottky architecture with a modified barrier structure that delivers superior avalanche ruggedness while maintaining near-Schottky forward characteristics.

This device operates across –65°C to +150°C junction temperature range, sustains 120A non-repetitive surge current (8.3ms), and maintains stable reverse leakage (<15µA at +125°C) - critical for high-temperature power supply reliability where thermal runaway must be avoided.

Key Specifications

Pinout & Package

Package: TO-220AB - Molded plastic case with copper leadframe, matte tin finish, UL 94V-0 rated, 1.85g weight, designed for vertical heatsink mounting via tab (cathode-connected). Pin configuration verified per Diodes Inc. DS30961 Rev. 12-2, Figure "TO-220AB Top View".

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT10U100CT, SBR10100CT trades marginal VF/IR performance for broader qualification and lower cost; versus MBR10100CT, it delivers significantly higher surge immunity and thermal stability - making it the preferred choice for mission-critical 10A rectification where reliability outweighs minimal VF savings.

Availability

SBR10100CT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial motor drives requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for SBR10100CT 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-reliability power conversion applications where Schottky limitations in surge and thermal stability impede performance - targeting server PSUs, telecom rectifiers, and industrial motor controls.

FAQ

What is the maximum junction temperature and how is it enforced in thermal design?

The SBR10100CT has a rated operating junction temperature range of –65°C to +150°C. Thermal design must ensure TJ does not exceed +150°C under worst-case conditions: using RθJC = 2°C/W, maximum power dissipation per leg is calculated as PD = VF × IF. For example, at 5A and 0.80V, PD = 4W per leg → ΔTJC = 4W × 2°C/W = 8°C, leaving ample margin below TJ(max) when mounted on a properly sized heatsink.

Is the cathode tab electrically isolated from the leads, and what is its voltage rating?

No - the cathode is internally connected to the metal tab, which is electrically common with Lead 2. The tab is not isolated; it carries full cathode potential. In TO-220AB, the tab is rated for 100V reverse blocking (same as VRRM) but requires proper insulating hardware if mounted to a grounded heatsink. No isolation voltage rating applies - unlike ITO-220AB, which specifies 2000VAC isolation.

How does SBR® technology differ from standard Schottky and why does it improve avalanche capability?

SBR® uses a modified epitaxial structure with controlled doping and barrier engineering to emulate Schottky forward conduction while incorporating a lightly doped drift region that supports controlled avalanche breakdown. Unlike standard Schottkys - which fail catastrophically under overvoltage - SBR devices sustain repetitive 120A surges (8.3ms) without parameter shift, enabling robust operation in inductive switching environments without external clamping.

Can SBR10100CT replace MBR10100CT in existing designs without layout changes?

Yes - SBR10100CT shares identical TO-220AB footprint, pinout, and mechanical dimensions with MBR10100CT. Substitution improves thermal stability (lower IR drift) and surge immunity (120A vs. 80A IFSM), but requires verification of forward voltage impact on control loop compensation, as 0.80V VF may slightly alter duty cycle in current-mode controllers calibrated for 0.85V Schottky drop.