Diodes Incorporated SBR20U100CTE

Overview

SBR20U100CTE from Diodes Incorporated is a 20A dual common-cathode Super Barrier Rectifier rated for 100V peak reverse voltage, featuring ultra-low forward voltage (0.63V typ. @ 20A, 25°C), soft fast switching, and TO-262 package. It replaces standard Schottky and fast recovery diodes in high-efficiency DC/DC converters, server power supplies, and telecom rectification where low conduction loss and thermal stability are critical.

For engineers reviewing the SBR20U100CTE datasheet, SBR20U100CTE pinout, SBR20U100CTE application, or SBR20U100CTE equivalent, key selection criteria include forward voltage at 20A load, junction-to-case thermal resistance (2°C/W), 200A non-repetitive surge rating, 175°C max operating temperature, and RoHS-compliant matte tin terminal finish.

Technical Context

This dual-leg common-cathode rectifier integrates two independent 10A-rated super barrier diodes in a single TO-262 package, enabling synchronous half-bridge or dual-output configurations. Its patented super barrier structure achieves lower VF than conventional Schottkys while maintaining superior high-temperature leakage performance (25mA max @ 100V, 125°C).

The device operates across –65°C to +175°C with 2°C/W junction-to-case thermal resistance, supporting high-power density designs without forced air cooling. Soft recovery minimizes EMI in high-frequency switching topologies such as LLC resonant converters and active clamp forward circuits.

Key Specifications

Pinout & Package

Package: TO-262 (3-lead, straight lead, isolated tab). The metal tab is electrically connected to the cathode terminals; anodized aluminum heatsink mounting requires insulating pad or shoulder washer.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH05 and MUR2010CT, SBR20U100CTE uniquely balances 100V capability, 0.63V VF, 2°C/W thermal resistance, and soft recovery-making it optimal for space-constrained, high-efficiency 48V–100V rectification where thermal management and EMI are critical.

Availability

SBR20U100CTE is available at Aetrix Electronics and suitable for server power supply rectification, telecom DC/DC converter output stages, industrial motor drive clamping, and LED driver secondary rectification requiring stable component supply and long-term industrial lifecycle support.

Supply support for SBR20U100CTE 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 and manufacturing operations across Asia and the US.

SBR® Super Barrier Rectifiers are engineered for high-efficiency power conversion in computing, telecom, and industrial systems where low forward voltage, thermal robustness, and soft switching are essential.

FAQ

Is SBR20U100CTE pin-compatible with standard TO-262 dual-diode packages?

Yes-SBR20U100CTE uses industry-standard TO-262 mechanical dimensions (per DS31969 p.4), including 2.54mm lead pitch and 10.11mm body width. Pin 1 (Anode A), Pin 2 (Common Cathode), and Pin 3 (Anode B) match JEDEC TO-262 outline, enabling drop-in replacement in existing PCB layouts designed for dual common-cathode rectifiers.

What is the maximum continuous power dissipation at 100°C case temperature?

At TC = 100°C, the derated average forward current is 7.5A per leg (15A total), yielding Pd = IF × VF ≈ 15A × 0.70V = 10.5W. With RθJC = 2°C/W, this results in ΔTJC = 21°C - well within the 175°C max junction limit, confirming safe operation without additional heatsinking beyond standard mounting.

Does SBR20U100CTE require a thermal pad or insulator when mounted to a heatsink?

Yes-the metal tab is electrically connected to the common cathode (Pin 2). If the heatsink is grounded or at a different potential, a thermally conductive but electrically isolating pad (e.g., mica or polymer-based) must be used. Failure to isolate may cause short circuits in common-cathode output configurations.

How does SBR20U100CTE's soft switching behavior affect EMI in high-frequency converters?

SBR20U100CTE exhibits soft reverse recovery with low di/dt during turn-off, as confirmed by its typical reverse current waveform (Fig. 3) showing gradual decay rather than abrupt snap-off. This reduces high-frequency ringing and conducted EMI, allowing smaller input filters and fewer ferrite beads in >300kHz LLC or phase-shifted full-bridge designs.