Diodes Incorporated SBR60A45CT

Overview

SBR60A45CT from Diodes Incorporated is a 60A dual common-cathode Super Barrier Rectifier in TO-220AB package, rated for 45V peak reverse voltage and 150°C junction operation. It delivers low forward voltage (0.53V @ 30A, 125°C), soft fast switching, and high-temperature stability-used in high-efficiency AC/DC secondary-side rectification for telecom power supplies and server VRMs.

For engineers reviewing the SBR60A45CT datasheet, SBR60A45CT pinout, SBR60A45CT application, or SBR60A45CT equivalent, key selection criteria include forward voltage at elevated temperature, surge current capability (280A IFSM), thermal resistance (2°C/W per leg), and RoHS-compliant matte tin terminations on copper leadframe.

Technical Context

The SBR60A45CT integrates two independent rectifying elements sharing a common cathode terminal, enabling synchronous-like efficiency without gate drive. Its patented Super Barrier structure replaces traditional PN junctions with metal-semiconductor barriers, reducing V_F while maintaining low leakage (<1mA @ 45V, 125°C).

Designed for high-current, high-temperature environments, it operates up to 150°C junction temperature with 2°C/W thermal resistance per leg (junction-to-case), and supports 8.3ms non-repetitive surge currents up to 280A-critical for handling inrush and transient overloads in switched-mode power supplies.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal dual rectifier with common cathode configuration. Molded plastic case (UL 94V-0), matte tin-plated copper leadframe, 1.85g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-60CPH045 and MUR6040CT, the SBR60A45CT provides superior thermal performance (2°C/W vs ≥3.5°C/W), lower V_F (0.53V vs ≥0.62V), and softer switching-making it optimal for high-density, high-efficiency 48V-output power systems where thermal headroom and EMI compliance are critical.

Availability

SBR60A45CT is available at Aetrix Electronics and suitable for telecom AC/DC power supplies, server VRMs, and industrial switched-mode power supplies requiring stable component supply and long-term production continuity.

Supply support for SBR60A45CT 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 US.

The SBR® Super Barrier Rectifier product line was developed to replace conventional Schottky and ultrafast rectifiers in high-current, high-temperature power conversion-targeting efficiency-critical applications in computing, communications, and industrial power.

FAQ

What is the maximum allowable case temperature for continuous operation?

The SBR60A45CT is rated for continuous operation at T_C = 150°C, as specified in the Absolute Maximum Ratings table. At this case temperature, the device delivers its full 60A average output current per leg. Derating begins below 150°C per Figure 3 in DS31320 Rev. 3–2.

Can SBR60A45CT be used in parallel configurations?

Yes-its positive temperature coefficient of forward voltage enables inherent current sharing when paralleled with identical units. However, layout symmetry (matched trace lengths, shared heatsink contact) and external balancing resistors (≤10mΩ) are recommended to ensure <10% current imbalance at full load.

Is the TO-220AB package electrically insulated?

No-the TO-220AB package has an electrically conductive metal tab (connected to the cathode terminal). Isolation requires insulating hardware (e.g., shoulder washers, silicone pads) and appropriate creepage/clearance spacing per IEC 62368-1 when mounted to grounded heatsinks.

Does the "-G" suffix indicate a different electrical specification?

No-the "-G" suffix (e.g., SBR60A45CT-G) denotes green molding compound compliant with halogen-free standards (IEC 61249-2-21), with identical electrical, thermal, and mechanical specifications as the standard version. Only the encapsulant material differs.