Diodes Incorporated MBR1530CT

Overview

MBR1530CT from Diodes Incorporated is a 15A dual common-cathode Schottky barrier rectifier in TO220AB package, rated for 30V peak repetitive reverse voltage, with maximum forward voltage drop of 0.78V at 15A and 25°C, and maximum reverse leakage current of 0.1mA at 25°C. It serves as a low-loss freewheeling or polarity protection diode in DC-DC converters and industrial power supplies.

For engineers reviewing the MBR1530CT datasheet, MBR1530CT pinout, MBR1530CT application, or MBR1530CT equivalent, key selection criteria include its 15A average forward current rating, 30V VRRM, low 0.78V VF at full load, TO220AB thermal resistance of 1.7°C/W, and AEC-Q101 qualification for reliability-critical power stages.

Technical Context

This dual Schottky rectifier integrates two independent anode terminals sharing a common cathode, enabling synchronous half-bridge or dual-output configurations. Its guard ring die construction provides transient overvoltage robustness, while low junction capacitance (300pF typical) supports high-frequency switching up to 100kHz.

The device operates across –65°C to +150°C junction temperature range and delivers 150A non-repetitive surge capability under 8.3ms half-sine conditions. Thermal performance is optimized for heatsink mounting, with RθJC = 1.7°C/W enabling stable operation at 15A with moderate heatsinking.

Key Specifications

Pinout & Package

Package: TO220AB - Molded plastic case with UL 94V-0 flammability rating, tin-plated terminals, and 2.24g mass. Designed for vertical heatsink mounting with screw-hole fixation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR1545CT, the MBR1530CT offers lower forward loss in 24V systems but reduced reverse margin; versus STPS1530CG, it provides verified pin compatibility and identical thermal mounting, simplifying mechanical redesign.

Availability

MBR1530CT is available at Aetrix Electronics and suitable for DC-DC converters, motor drive recirculation circuits, polarity protection schemes, and low-voltage inverter outputs requiring stable component supply and long-term production continuity.

Supply support for MBR1530CT 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 California and operating wafer fabs and assembly facilities across Asia.

The MBR1530CT belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical 12–48V power conversion in automotive, industrial, and computing applications.

FAQ

What is the maximum junction temperature for continuous operation?

The MBR1530CT supports continuous operation up to +150°C junction temperature. Derating begins above +125°C case temperature, where average forward current must be reduced linearly to zero at +150°C per the published derating curve. Thermal design must ensure RθJA remains within limits for target ambient conditions.

Is MBR1530CT pin-compatible with MBR1545CT or MBR1560CT?

Yes - all MBR15xxCT devices share identical TO220AB package outline, pin configuration (Anode1–Cathode–Anode2), and mechanical footprint. No PCB layout change is needed when upgrading or downgrading VRRM within this family, provided thermal and electrical margins remain valid.

Does this device require a heatsink in 15A applications?

Yes - at 15A continuous current, junction temperature rise exceeds safe limits without heatsinking. With RθJC = 1.7°C/W and typical RθCS + RθSA ≈ 1.3°C/W, a minimum total thermal resistance of 3.0°C/W is required to hold TJ ≤ 125°C at TA = 50°C, necessitating a finned aluminum heatsink.

What does the "CT" suffix indicate in MBR1530CT?

The "CT" suffix denotes a dual common-cathode configuration in TO220AB package. It distinguishes this part from single-diode variants (e.g., MBR1530T) and common-anode versions (e.g., MBR1530CA), confirming the internal connection of both cathodes to Pin 2 for shared output routing.