Taiwan Semiconductor Corporation MBR1050CTH

Overview

MBR1050CTH from Taiwan Semiconductor is a 10A, 50V dual-die Schottky barrier rectifier in TO-220AB package, featuring 0.90V max forward voltage at 10A/25°C, 120A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency output rectifier in DC-DC converters and switching power supplies where low conduction loss and thermal robustness are critical.

For engineers reviewing the MBR1050CTH datasheet, MBR1050CTH pinout, MBR1050CTH application, or MBR1050CTH equivalent, key selection factors include its 50V VRRM rating, dual-common-cathode configuration, junction-to-case thermal resistance of 1.5°C/W, AEC-Q101 qualification status, and compatibility with lead-free reflow soldering per J-STD-002.

Technical Context

This device integrates two independent Schottky diodes in a single TO-220AB package with common cathode connection, enabling synchronous rectification or dual-output configurations. Its guard ring structure provides overvoltage protection, and the 10,000 V/μs dv/dt rating supports operation in fast-switching topologies.

The MBR1050CTH operates across -55°C to +150°C junction temperature range, with reverse leakage limited to 100 µA at 25°C and 10 mA at 125°C - critical for maintaining efficiency in thermally stressed environments such as under-hood automotive power modules.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal, vertical mounting, matte tin-plated leads, UL 94V-0 molding compound, polarity marked on case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MBR1050CTH, the VS-MBR1050CTH offers marginally lower typical VF but identical qualification and footprint, while the MBR1050CTG trades AEC-Q101 compliance and tighter leakage for broader commercial availability - making MBR1050CTH the optimal choice for automotive-grade 50V rectification where reliability and thermal stability are prioritized.

Availability

MBR1050CTH is available at Aetrix Electronics and suitable for automotive power modules, industrial switching mode power supplies, and USB-C PD adapter designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for MBR1050CTH 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs since 1979.

The MBR1050CTH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability automotive and industrial power conversion where low VF, robust surge handling, and thermal stability are mandatory.

FAQ

What is the maximum junction temperature rating for MBR1050CTH?

The MBR1050CTH has a maximum junction temperature (TJ) rating of +150°C, verified per AEC-Q101 stress testing. This allows sustained operation in under-hood automotive environments and sealed industrial enclosures. The device maintains specified electrical parameters up to this limit, and its 1.5°C/W junction-to-case thermal resistance enables effective heat transfer to external heatsinks. Always observe derating curves in Figure 1 of the official datasheet when operating near thermal limits.

Is MBR1050CTH pin-compatible with non-AEC-Q101 versions like MBR1050CT?

Yes, MBR1050CTH is mechanically and electrically pin-compatible with MBR1050CT - both use identical TO-220AB packaging, pinout (Anode1–Cathode–Anode2), and absolute maximum ratings. The "H" suffix denotes AEC-Q101 qualification only; no circuit-level or layout changes are needed when upgrading from MBR1050CT to MBR1050CTH in existing designs.

What is the forward voltage specification for MBR1050CTH at 10A and 125°C?

The MBR1050CTH has a maximum forward voltage (VF) of 0.75 V at 10A and TJ = 125°C, as specified in the Electrical Specifications table. This low high-temperature VF ensures stable efficiency in thermally demanding applications such as automotive DC-DC converters. The value reflects actual measured performance under pulsed conditions (PW = 0.3ms), not extrapolated or typical-only data.

Does MBR1050CTH support lead-free reflow soldering?

Yes, MBR1050CTH features matte tin-plated leads compliant with J-STD-002 for solderability, and its TO-220AB package is rated for lead-free reflow profiles up to 260°C peak temperature. The molding compound meets UL 94V-0 flammability standards, and the device passes JEDEC JESD201 Class 2 whisker testing - confirming suitability for modern RoHS-compliant assembly processes.

How does the guard ring structure in MBR1050CTH improve reliability?

The guard ring in MBR1050CTH is a diffusion-based edge termination that suppresses surface electric field crowding, increasing the device's critical rate of rise of off-state voltage (dv/dt) to 10,000 V/μs. This prevents premature avalanche breakdown during fast-switching transients in SMPS and motor drives, eliminating need for external snubbers and improving long-term reliability in noisy power environments.