Diodes Incorporated SBR30A100CT

Overview

SBR30A100CT from Diodes Incorporated is a 30A dual common-cathode Super Barrier Rectifier with 100V peak reverse voltage, 0.8V max forward voltage at 15A per leg, and 0.1mA max reverse leakage at 25°C. It serves as a high-efficiency output rectifier or freewheel diode in high-current DC-DC converters and AC-DC adapters operating up to +175°C junction temperature.

For engineers reviewing the SBR30A100CT datasheet, SBR30A100CT pinout, SBR30A100CT application, or SBR30A100CT equivalent, key selection criteria include its ultra-low VF stability across temperature, rugged avalanche energy rating (550mJ), TO-220AB package thermal resistance (2°C/W), and compliance with RoHS, halogen-free, and antimony-free "Green" requirements.

Technical Context

This dual-diode rectifier integrates two independent 15A legs sharing a common cathode terminal, enabling synchronous or interleaved converter topologies. Its patented SBR technology replaces Schottky architecture with superior avalanche ruggedness-250A non-repetitive surge current and 550mJ single-pulse avalanche energy-while maintaining low conduction loss.

Thermal performance is defined by 2°C/W junction-to-case resistance (TO-220AB, with 50×50×23mm heatsink) and stable reverse leakage (<10mA at 125°C, VR=100V). The device operates from –65°C to +175°C, supporting high-temperature industrial and automotive power supplies without thermal runaway risk.

Key Specifications

Pinout & Package

Package: TO-220AB (3-lead, vertical mount, isolated tab). Case material is UL 94V-0 molded plastic; terminals are matte tin over copper leadframe, solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH01-M3 and MUR3010CT, the SBR30A100CT delivers optimal balance of low VF, proven avalanche robustness, and TO-220AB manufacturability-making it preferred for thermally constrained, high-reliability DC-DC and adapter designs where footprint and qualification time matter.

Availability

SBR30A100CT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and automotive auxiliary power supplies requiring stable component supply, RoHS-compliant sourcing, and long-term lifecycle support.

Supply support for SBR30A100CT 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, specializing in high-efficiency power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.

The SBR® Super Barrier Rectifier product line was developed to replace Schottky diodes in high-current, high-temperature power conversion systems-delivering lower VF than standard PN diodes and greater ruggedness than Schottkys without compromising efficiency.

FAQ

What is the maximum junction temperature for continuous operation?

The SBR30A100CT is rated for continuous operation from –65°C to +175°C junction temperature. At 15A per leg and 25°C ambient with a 50×50×23mm aluminum heatsink, junction temperature remains below 125°C, well within safe operating limits. Derating curves in Figure 4 confirm 10A per leg at 100°C ambient.

Is the TO-220AB package electrically isolated?

No-the TO-220AB package used in SBR30A100CT has an electrically connected metal tab (Pin 2, Cathode). The ITO-220AB variant (SBR30A100CTFP) provides 2,000V isolation between terminals and heatsink. For TO-220AB, electrical isolation must be achieved via insulating hardware or PCB design.

How does SBR technology differ from standard Schottky diodes?

SBR uses a proprietary epitaxial structure that combines low forward voltage (like Schottky) with controlled avalanche breakdown capability (unlike Schottky). This yields 550mJ EAS and 250A IFSM-performance unattainable with conventional Schottky diodes-while maintaining VF ≤ 0.8V at 15A and 25°C.

Can SBR30A100CT replace MBR3010CT in existing designs?

Yes, with validation: both are 100V, 30A dual common-cathode rectifiers in TO-220AB. However, SBR30A100CT offers 0.8V VF (vs. 1.1V for MBR3010CT), 550mJ EAS (vs. none specified), and <0.1mA IR at 25°C (vs. 1.0mA). Thermal and surge margins improve, but layout review is recommended due to differing VF/IR temperature coefficients.