Diodes Incorporated MB152

Overview

MB152 from Diodes Incorporated is a high-current silicon bridge rectifier with 200 V maximum recurrent peak reverse voltage, 15.0 A average rectified output current at TC = 55°C, and 1.1 V typical forward voltage drop at 7.5 A. It features solderable universal terminals (0.25" Faston), metal case for superior thermal conduction, and is rated for industrial AC/DC power supplies in motor drives and welding equipment.

For engineers reviewing the MB152 datasheet, MB152 pinout, MB152 application, or MB152 equivalent, key selection criteria include thermal resistance (R_JC = 2.5 °C/W), I²t fusing rating (373 A²s), RoHS-compliant lead-free finish (date code 0514+), and bolt-down mounting requirement with thermal compound for heat-sink interface.

Technical Context

This single-phase full-wave bridge rectifier integrates four silicon diodes in a common metal case to convert AC input (e.g., 120/240 VAC) into pulsating DC. Its design centers on high thermal efficiency via direct junction-to-case conduction and low forward voltage to minimize power loss at 15 A continuous load.

The device operates across –55°C to +150°C junction temperature, supports 300 A non-repetitive peak surge current (8.3 ms half-sine), and maintains <10 µA reverse leakage at 25°C - enabling reliable operation in high-ambient industrial environments with resistive or inductive loads.

Key Specifications

Pinout & Package

MB152 uses a metal-cased, bolt-down package with four terminals: two AC inputs (marked "AC"/"~"), one positive DC output (+), and one negative DC output (–). Mounting requires #10 screw, 20 in·lb torque, and silicone thermal compound between case and heatsink.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBPC1502 and KBPC1502, MB152 delivers superior thermal management (2.5 °C/W), verified RoHS compliance with exemptions, and higher surge robustness - making it optimal for thermally constrained, high-reliability industrial rectification where bolt-down mounting is feasible.

Availability

MB152 is available at Aetrix Electronics and suitable for industrial motor drives, welding power supplies, and uninterruptible power systems requiring stable component supply and long-lifecycle support.

Supply support for MB152 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 MB series belongs to Diodes' high-current silicon bridge rectifier product line, engineered specifically for rugged industrial AC/DC conversion where thermal reliability, surge immunity, and mechanical mounting flexibility are critical.

FAQ

Is MB152 RoHS compliant?

Yes, MB152 is RoHS compliant per EU Directive 2002/95/EC with exemptions applied (glass and high-temperature solder), effective for date codes 0514 and later. Compliance is documented in Diodes' DS21303 Rev. 7 datasheet and supported by material declarations.

What is the recommended mounting method for MB152?

MB152 must be bolted directly to a heatsink using a #10 screw at maximum 20 in·lb torque. A layer of silicone thermal compound is required between the metal case and heatsink surface to achieve specified R_JC = 2.5 °C/W and prevent thermal runaway.

Can MB152 replace MB151 or MB154 in existing designs?

Yes, MB152 is pin- and package-compatible with other MB15x variants. Its V_RRM = 200 V matches MB151 (100 V) and MB154 (400 V) only in voltage rating - substitution requires verification of system peak voltage margins and thermal design against the 200 V rating.

Why is MB152 marked "Not Recommended for New Design"?

Diodes Incorporated recommends the GBPC15 series as a drop-in replacement with improved thermal metrics and modern packaging. MB152 remains fully supported for legacy repair and continuity, but new designs should evaluate GBPC1502 for enhanced manufacturability and long-term supply assurance.