Diodes Incorporated SBRT20U100CT

Overview

SBRT20U100CT from Diodes Incorporated is a 20A dual common-cathode Trench Super Barrier Rectifier in TO-220AB package, rated for 100V peak repetitive reverse voltage, with max 0.69V forward voltage at 10A/25°C and 0.3mA reverse leakage at 100V/125°C - used in high-efficiency AC/DC front-end rectification for industrial power supplies.

For engineers reviewing the SBRT20U100CT datasheet, SBRT20U100CT pinout, SBRT20U100CT application, or SBRT20U100CT equivalent, key selection criteria include ultra-low VF stability across temperature, AEC-Q101 qualification for automotive-grade reliability, TO-220AB thermal resistance (2°C/W junction-to-case), and dual-leg parallel conduction capability for 20A total output current.

Technical Context

This dual common-cathode rectifier integrates two independent SBR (Super Barrier Rectifier) die in a single TO-220AB thermally optimized package, enabling synchronous or interleaved rectification topologies without external paralleling. Each leg supports 10A average rectified current and withstands 200A non-repetitive surge (8.3ms half-sine).

Designed using Diodes' Trench-based super barrier process, it achieves lower forward voltage than Schottky diodes while maintaining superior high-temperature reverse leakage performance - IR ≤ 0.3mA at 100V/125°C versus typical Schottky degradation beyond 100°C.

Key Specifications

Pinout & Package

Packaged in industry-standard TO-220AB housing with isolated metal tab (cathode-connected), this dual rectifier features three terminals: Pin 1 (Anode 1), Pin 2 (Cathode, common), Pin 3 (Anode 2). The metal tab is electrically connected to the cathode and serves as primary thermal path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual common-cathode super barrier rectifier applications.

Compared with STPS20H100CG and VB20100C-E3/4W, SBRT20U100CT delivers 7% lower conduction loss at 125°C and eliminates thermal runaway risk in high-ambient deployments - critical for industrial and automotive power stages where long-term reliability outweighs minor cost differences.

Availability

SBRT20U100CT is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, automotive DC/DC converters, and solar microinverters requiring stable component supply with guaranteed long-term manufacturability.

Supply support for SBRT20U100CT 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 centers across Asia and manufacturing in China, Taiwan, and Malaysia.

The TrenchSBR product line targets high-efficiency power conversion applications demanding lower forward voltage and superior high-temperature leakage control than conventional Schottky diodes - especially in automotive, industrial, and renewable energy systems.

FAQ

Is SBRT20U100CT pin-compatible with standard TO-220AB dual diodes?

Yes - SBRT20U100CT uses the standard TO-220AB outline with Anode–Cathode–Anode pin configuration (Pin 1 = A1, Pin 2 = K, Pin 3 = A2). Its isolated metal tab matches mechanical footprints of STPS20H100CG and VS-20BQ100PbF, enabling drop-in replacement in existing layouts without PCB revision.

What is the maximum continuous junction temperature for SBRT20U100CT?

The absolute maximum junction temperature is +150°C, validated per AEC-Q101 stress testing. Operation at TJ = 150°C is permitted only with adequate heatsinking to maintain RθJA ≤ 10°C/W, as confirmed by Figure 3's derating curve showing 10A IO at 125°C ambient with 50mm × 50mm × 23mm heatsink.

Does SBRT20U100CT require a thermal pad or insulator when mounted to a heatsink?

No insulator is required if the heatsink is referenced to the cathode potential. The metal tab is internally connected to Pin 2 (common cathode), so electrical isolation is only needed when the heatsink is grounded or at a different potential. Standard mounting torque is 0.5–0.7 N·m per screw.

How does SBRT20U100CT perform in reverse recovery compared to fast recovery diodes?

As a super barrier rectifier, SBRT20U100CT exhibits soft, quasi-zero reverse recovery (no stored charge), unlike fast recovery diodes that generate EMI from abrupt turn-off. Measured junction capacitance is 1000 pF at 4V reverse bias (Figure 5), enabling clean commutation in 100 kHz+ PFC circuits without snubber networks.