Diodes Incorporated MBRM5100-13

Overview

MBRM5100-13 from Diodes Incorporated is a 5A, 100V high-voltage Schottky barrier rectifier in POWERMITE3 package, designed for low-loss freewheeling, polarity protection, and high-frequency inverter outputs. It features 0.75V typical forward voltage at 5A/25°C, 100A non-repetitive surge rating, and UL 94V-0 flammability compliance.

For engineers reviewing the MBRM5100-13 datasheet, MBRM5100-13 pinout, MBRM5100-13 application, or MBRM5100-13 equivalent, key selection factors include thermal resistance (R_JC = 1.2°C/W), reverse leakage (<0.015mA @ 25°C), junction temperature range (–65°C to +125°C), and mandatory PCB-level connection of Pins 1 & 2.

Technical Context

This Schottky rectifier uses guard-ring die construction for transient robustness and operates with minimal forward conduction loss across –65°C to +125°C junction temperatures. Its 100V V_RRM and low R_JC enable use in compact, thermally constrained DC/DC and AC/DC secondary-side rectification.

The device requires external PCB copper as heatsink-Pins 1 & 2 must be electrically joined on board to form the cathode terminal, while Pin 3 serves as anode. Thermal performance depends critically on soldering-point design (R_JS = 2.7°C/W) and substrate layout per AP02001 guidelines.

Key Specifications

Pinout & Package

Package: POWERMITE3 - Molded plastic surface-mount package with solderable terminals (MIL-STD-202, Method 208), UL 94V-0 rated, weight 0.072 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS510-E3/57T and SB5100, MBRM5100-13 delivers superior thermal performance via its dual-cathode POWERMITE3 layout and lower V_F, making it optimal for space-constrained, high-efficiency 5–12V power rails where junction temperature must stay below 110°C.

Availability

MBRM5100-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, LED driver power supplies, and telecom PoE midspan equipment requiring stable component supply and long-term lifecycle support.

Supply support for MBRM5100-13 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 MBRM5100 belongs to Diodes' high-voltage Schottky rectifier product line, engineered specifically for high-efficiency, low-profile power conversion in automotive, industrial, and communications infrastructure where thermal density and reliability are critical.

FAQ

What is the correct PCB layout requirement for Pins 1 and 2?

Pins 1 and 2 must be electrically connected together on the printed circuit board using a low-impedance copper trace or polygon pour. This joint cathode configuration is mandatory-not optional-and ensures proper current sharing, thermal dissipation, and mechanical stability per Diodes Inc. AP02001 layout guidelines.

Can MBRM5100-13 replace a standard PN-junction rectifier in existing designs?

Yes, but only after verifying reverse voltage margin and thermal design. Its 100V V_RRM matches common 1N540x equivalents, yet its 0.75V V_F cuts conduction loss by ~40% versus silicon diodes. However, reverse leakage is higher-confirm IR remains acceptable at max operating temperature.

What is the maximum allowable ambient temperature for continuous 5A operation?

At 5A DC, ambient temperature must not exceed 80°C when mounted per recommended GETEK substrate layout (AP02001). Derating curves (Figure 5) show usable current drops to ~3.5A at 100°C ambient, assuming R_JA ≈ 30°C/W. Forced airflow or enhanced copper improves this limit.

Does MBRM5100-13 meet AEC-Q101 for automotive use?

No-MBRM5100-13 is not AEC-Q101 qualified. While its –65°C to +125°C T_J range supports automotive under-hood environments, qualification requires additional stress testing (HTOL, TC, HTRB). For AEC-Q101-compliant alternatives, consider Diodes' APDx series Schottky rectifiers.