Diodes Incorporated MBR20200CT-LJ

Overview

MBR20200CT-LJ from Diodes Incorporated is a 20A dual common-cathode Schottky barrier rectifier in TO220AB (Type C) package, rated for 200V peak reverse voltage, with maximum 0.89V forward voltage at 10A and 0.1mA leakage at 200V/25°C, used for polarity protection and recirculating diode functions in DC power supplies and motor drives.

For engineers reviewing the MBR20200CT-LJ datasheet, MBR20200CT-LJ pinout, MBR20200CT-LJ application, or MBR20200CT-LJ equivalent, key selection criteria include per-leg 10A average current rating, thermal resistance of 3°C/W junction-to-case, AEC-Q101 qualification, RoHS-compliant matte tin terminals, and guard ring die construction for transient robustness.

Technical Context

This dual Schottky rectifier integrates two independent 200V/10A legs sharing a common cathode terminal, enabling synchronous half-wave rectification or bidirectional clamping. Its low VF minimizes conduction loss in high-frequency switching converters, while the guard ring structure enhances ESD and surge immunity beyond standard Schottky designs.

Thermal performance is defined by RθJC = 3°C/W (TO220AB), requiring heatsinking for sustained 10A operation; leakage remains ≤0.1mA at 200V/25°C but rises to 10mA at 200V/125°C, necessitating derating in high-temperature environments.

Key Specifications

Pinout & Package

Package: TO220AB (Type C), molded plastic case with UL 94V-0 flammability rating, 1.95g weight, matte tin–plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS20H100CG and VB20200C-G, MBR20200CT-LJ uniquely balances TO220AB mountability, AEC-Q101 compliance, and 0.89V VF-making it optimal for space-constrained automotive and industrial rectification where qualification and thermal manageability are jointly essential.

Availability

MBR20200CT-LJ is available at Aetrix Electronics and suitable for DC power supplies, motor drive recirculation paths, polarity protection circuits, and industrial PLC power inputs requiring stable component supply and long-term manufacturability.

Supply support for MBR20200CT-LJ 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.

MBR20200CT-LJ belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical AC/DC and DC/DC conversion in automotive, industrial, and computing power systems.

FAQ

What is the maximum junction temperature for MBR20200CT-LJ?

The absolute maximum junction temperature is +175°C, with continuous operation supported from –55°C to +175°C. Derating begins above +25°C ambient per Figure 4 in the datasheet: at +100°C ambient, the per-leg average current must be reduced to approximately 5.5A to maintain TJ ≤ 175°C with standard heatsinking.

Is MBR20200CT-LJ suitable for surface-mount assembly?

No - MBR20200CT-LJ uses the through-hole TO220AB (Type C) package with three leads designed for vertical mounting and mechanical retention via the center tab. It requires wave soldering or hand-soldering with appropriate thermal relief; it is not compatible with reflow SMT processes.

How does the common-cathode configuration affect circuit layout?

The shared cathode (K) terminal simplifies output routing but mandates symmetrical thermal and current paths for both anodes. PCB layout must provide equal copper area and trace width to A1 and A2 to prevent current imbalance, and the K pad must be large enough to handle up to 20A total current and serve as a thermal conduction path to the heatsink.

Does MBR20200CT-LJ require a snubber circuit in typical applications?

Snubbers are generally unnecessary due to the Schottky's soft reverse recovery and absence of minority-carrier storage. However, in high-dI/dt switching environments (e.g., >100A/μs), a small RC snubber across each anode-to-cathode may suppress ringing caused by parasitic inductance in high-current PCB traces.