Diodes Incorporated SBR30A60CT

Overview

SBR30A60CT from Diodes Incorporated is a 60 V, 30 A dual common-cathode super barrier rectifier in TO-220AB package, optimized for high-efficiency SMPS and DC-DC converters. It delivers VF ≤ 0.60 V at 15 A (25°C), IR ≤ 0.5 mA at 60 V (25°C), and features soft fast switching with 400 mJ non-repetitive avalanche energy for robust freewheeling operation.

For engineers reviewing the SBR30A60CT datasheet, SBR30A60CT pinout, SBR30A60CT application, or SBR30A60CT equivalent, key selection criteria include forward voltage drop at high current, thermal resistance (RθJC = 2°C/W), reverse leakage stability up to +125°C, and UL 1557 certification for safety-critical power stages.

Technical Context

This dual-diode rectifier integrates two independent SBR® elements sharing a common cathode terminal, enabling synchronous or interleaved configurations in center-tapped or dual-output topologies. Its patented super barrier structure replaces traditional PN junctions with low-barrier metal-semiconductor interfaces, reducing conduction loss while maintaining soft recovery (no hard reverse recovery spikes).

The device operates across –65°C to +150°C junction temperature range and supports 250 A non-repetitive surge current (8.3 ms half-sine). Thermal design leverages low RθJC (2°C/W) for direct heatsink mounting, with isolation voltage of 2000 VAC (ITO-220AB variant only).

Key Specifications

Pinout & Package

TO-220AB package: 3-terminal, insulated case, vertical mounting with tab as cathode connection. Cathode (pin 2) is electrically connected to the metal tab for low-inductance heatsink return path. Anodes (pins 1 and 3) are isolated terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH06 and MUR3060CT, the SBR30A60CT delivers superior efficiency via lower VF and certified safety compliance, while its soft switching eliminates snubber needs-critical for space-constrained, high-frequency telecom and server power systems.

Availability

SBR30A60CT is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, telecom rectifier modules, and LED driver power stages requiring stable component supply and long-term lifecycle support.

Supply support for SBR30A60CT 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 Americas.

The SBR® Super Barrier Rectifier product line targets high-efficiency, high-reliability power conversion in computing, industrial, and communications infrastructure-designed to replace conventional Schottky and ultrafast diodes where low VF, low IR, and soft switching are critical.

FAQ

What is the maximum junction temperature and how does it affect derating?

The SBR30A60CT has a rated TJ range of –65°C to +150°C. At ambient temperatures above 25°C, average forward current must be linearly derated per Fig. 5 in the datasheet, reaching 15 A at +100°C ambient with proper heatsinking. Exceeding 150°C junction temperature risks permanent parametric shift and premature failure.

Is the metal tab electrically isolated in the TO-220AB package?

No-the metal tab in the TO-220AB package is internally connected to the common cathode (pin 2) and is not electrically isolated. For isolation requirements, the ITO-220AB variant (SBR30A60CTFP) provides 2000 VAC isolation between terminals and heatsink, verified per UL 1557.

How does the SBR30A60CT compare to standard Schottky rectifiers in high-temperature operation?

Unlike standard Schottkys, whose IR increases exponentially with temperature, the SBR30A60CT maintains IR ≤ 60 mA at 125°C (vs. 0.5 mA at 25°C), ensuring stable light-load efficiency and reduced thermal runaway risk in enclosed environments like 1U server chassis.

Can this device be used in parallel configurations for higher current handling?

Yes-its positive temperature coefficient of VF enables natural current sharing when paralleled with identical units. However, layout symmetry (matched trace inductance/resistance) and individual thermal management are essential; paralleling more than two units requires current-sharing resistors per leg to ensure balance under transient conditions.