Diodes Incorporated SBR30A100CT-E1

Overview

SBR30A100CT-E1 from Diodes Incorporated is a 100 V, 30 A total (15 A per leg) dual common-cathode Super Barrier Rectifier in TO-220AB package, featuring 0.80 V max forward voltage at 15 A and 0.1 mA max reverse leakage at 100 V/25°C. It delivers rugged avalanche capability (550 mJ), low thermal resistance (2°C/W junction-to-case), and stable high-temperature operation up to +175°C - deployed as output rectifier in high-efficiency DC-DC converters.

For engineers reviewing the SBR30A100CT-E1 datasheet, SBR30A100CT-E1 pinout, SBR30A100CT-E1 application, or SBR30A100CT-E1 equivalent, key selection criteria include forward voltage drop at rated current, high-temperature reverse leakage stability, avalanche energy rating, thermal resistance, and dual-leg common-cathode configuration for synchronous rectification topologies.

Technical Context

This device implements Diodes Inc.'s patented SBR® technology - a planar-structured super barrier rectifier that combines Schottky-like low VF with PN-junction-level avalanche robustness. Unlike standard Schottkys, it sustains non-repetitive surge currents up to 250 A (8.3 ms half-sine) and exhibits <10 mA IR at 100 V and +125°C.

The dual common-cathode topology enables independent anode control per leg, supporting interleaved or phase-shifted full-wave rectification. Its TO-220AB package provides direct heatsink mounting with 2°C/W R_θJC, enabling high-power density designs without forced air cooling in industrial power supplies.

Key Specifications

Pinout & Package

TO-220AB package with isolated tab (electrically connected to cathode), 3-terminal configuration: Anode 1 (Pin 1), Anode 2 (Pin 2), Common Cathode (Tab/Pin 3). Mounting tab serves as primary heat path and electrical cathode node.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH01-M3 and MUR3010CTG, SBR30A100CT-E1 uniquely balances ultra-low VF, high-temperature leakage stability, and certified avalanche ruggedness - making it optimal for thermally constrained, high-reliability DC-DC outputs where efficiency and transient robustness are co-prioritized.

Availability

SBR30A100CT-E1 is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and telecom AC-DC adapters requiring stable component supply, long-lifecycle support, and RoHS-compliant "Green" packaging.

Supply support for SBR30A100CT-E1 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 the Americas.

The SBR® Super Barrier Rectifier product line targets high-efficiency power conversion systems where Schottky VF must be retained without sacrificing ruggedness - specifically engineered for server, telecom, and industrial SMPS applications demanding reliability beyond standard diodes.

FAQ

What is the maximum continuous junction temperature for SBR30A100CT-E1?

The absolute maximum junction temperature is +175°C, verified per JEDEC JESD22-A108. Operation at this limit requires thermal design ensuring R_θJA ≤ 4.5°C/W with 25°C ambient, typically achieved using a 50×50 mm aluminum heatsink and thermal interface material. Derating curves in Figure 4 confirm 15 A per leg remains valid up to 100°C ambient with proper heatsinking.

Does SBR30A100CT-E1 require a heatsink in 30 A operation?

Yes - sustained 30 A total current (15 A per leg) necessitates a heatsink. With R_θJC = 2°C/W and P_D ≈ 12 W (0.8 V × 15 A), a 50×50×23 mm aluminum heatsink yields ~40°C junction-to-ambient rise. Without heatsinking, junction temperature exceeds 175°C within seconds under load, triggering thermal failure.

How does SBR30A100CT-E1 differ from standard Schottky rectifiers in surge handling?

Unlike conventional Schottkys, SBR30A100CT-E1 is rated for 550 mJ non-repetitive avalanche energy (E_AS) and 250 A IFSM (8.3 ms). Standard 100 V Schottkys lack avalanche rating and typically fail catastrophically under similar inductive surges - requiring external TVS or RC snubbers that add cost and board space.

Is the TO-220AB tab electrically isolated in SBR30A100CT-E1?

Yes - the TO-220AB package used for SBR30A100CT-E1 features an electrically isolated metal tab (cathode terminal), confirmed in Diodes Inc. AP02002 mechanical drawings and DS30983 Section "Mechanical Data". This allows direct mounting to grounded heatsinks without insulating washers, simplifying thermal design and reducing assembly cost.