Diodes Incorporated SBR3060CT

Overview

SBR3060CT from Diodes Incorporated is a 30A dual common-cathode Super Barrier Rectifier rated for 60V peak reverse voltage, with typical forward voltage of 0.65V at 15A and 125°C, soft-switching behavior, and TO-220AB package. It serves as a high-efficiency output rectifier in AC/DC and DC/DC power supplies for telecom and industrial equipment.

For engineers reviewing the SBR3060CT datasheet, SBR3060CT pinout, SBR3060CT application, or SBR3060CT equivalent, key selection criteria include its low VF at elevated temperature, 200A non-repetitive surge rating, thermal resistance of 2°C/W (per leg), and RoHS-compliant matte tin finish on copper leadframe.

Technical Context

This dual-diode rectifier integrates two independent 60V/15A legs in a single TO-220AB package with common cathode configuration, enabling synchronous or center-tapped secondary rectification. Its patented Super Barrier structure replaces traditional PN junctions with metal-semiconductor interfaces to reduce forward conduction loss while maintaining low leakage.

Thermal performance is defined per leg: RθJC = 2°C/W, allowing 15A continuous operation up to 125°C case temperature before derating. Reverse recovery is soft and fast-no specified trr value, but characterized by low stored charge and minimal voltage overshoot under switching conditions.

Key Specifications

Pinout & Package

TO-220AB package: 3-terminal, common-cathode dual diode configuration with isolated tab (anode1/anode2/cathode). Tab is electrically connected to cathode and must be insulated if mounted to grounded heatsink.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VB3060-GS08 and MBR3060CT, the SBR3060CT delivers lower forward voltage at high temperature and tighter leakage control-critical for thermally constrained, high-efficiency power supplies where conduction loss dominates total losses.

Availability

SBR3060CT is available at Aetrix Electronics and suitable for telecom AC/DC power supplies, industrial DC/DC converters, and automotive infotainment systems requiring stable component supply and long-term manufacturing continuity.

Supply support for SBR3060CT 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, serving industrial, computing, consumer, and communications markets since 1964.

The SBR® Super Barrier Rectifier product line targets high-efficiency, high-temperature power conversion applications where conventional Schottky diodes exhibit excessive VF drift or leakage-especially in server, telecom, and automotive power supplies.

FAQ

Is the SBR3060CT pin-compatible with standard TO-220AB dual diodes like MBR3060CT?

Yes, SBR3060CT uses the industry-standard TO-220AB outline with identical 3-pin common-cathode pinout (Anode1–Cathode–Anode2) and mechanical footprint. Mounting hole spacing, tab size, and lead pitch match MBR3060CT and other legacy dual diodes, enabling drop-in replacement without PCB redesign.

What is the maximum continuous current per leg at 100°C case temperature?

Per the derating curve in Figure 1, the SBR3060CT supports 12.5A per leg at TC = 100°C. This is derived from linear interpolation between 15A at 75°C and 10A at 125°C, consistent with its 2°C/W thermal resistance and 150°C max junction rating.

Does the metal tab carry electrical potential, and is it isolated?

Yes, the metal tab is electrically connected to the common cathode (Pin 2) and is not isolated. When mounted to a heatsink, insulation (e.g., mica washer or sil-pad) is required unless the heatsink is floating or biased to cathode potential. No internal isolation exists between tab and cathode.

How does the SBR3060CT's soft switching behavior affect EMI in high-frequency SMPS?

Its soft reverse recovery eliminates abrupt current reversal and associated high-frequency ringing, reducing broadband conducted EMI by 5–8 dB in the 30–100 MHz range. This lowers filter component count and eases EMC compliance in 200–500 kHz flyback and forward converters without requiring snubbers.