Taiwan Semiconductor Corporation MBRS1550CT

Overview

MBRS1550CT from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 15 A average forward current, 50 V repetitive peak reverse voltage, and 150 A non-repetitive surge current. It delivers low forward voltage drop (0.75 V max at 7.5 A, 25°C) and operates up to 150°C junction temperature, enabling high-efficiency DC/DC converters and switching power supplies.

For engineers reviewing the MBRS1550CT datasheet, MBRS1550CT pinout, MBRS1550CT application, or MBRS1550CT equivalent, key selection criteria include its 50 V V_RRM, dual-common-cathode configuration, 2 °C/W junction-to-case thermal resistance, and J-STD-020 Level 1 moisture sensitivity-critical for reflow-compatible high-current rectification designs.

Technical Context

The MBRS1550CT integrates two independent Schottky diodes in a single TO-263AB surface-mount package with common cathode connection. Its low V_F (≤0.75 V @ 7.5 A, 25°C) minimizes conduction loss, while high I_FSM (150 A) supports robust transient handling in SMPS output stages.

Thermally optimized with R_θJC = 2 °C/W and R_θJA = 50 °C/W, it sustains continuous 15 A operation under controlled PCB copper area and airflow. Guard ring structure provides overvoltage protection, and matte tin-plated terminals ensure reliable solderability per J-STD-002.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, single-row 3-terminal outline with exposed thermal pad. Cathode common to Pin 2 and Pin 3; Anode 1 and Anode 2 on Pins 1 and 3 respectively (dual common-cathode configuration).

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBR1550CT and MBR1550CT, the MBRS1550CT offers the lowest V_F and best thermal performance in its class, making it optimal for high-efficiency, high-power-density 50 V rectification where thermal headroom and standby leakage are critical.

Availability

MBRS1550CT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and laptop adapters requiring stable component supply, consistent parametric performance, and J-STD-020 Level 1 manufacturability.

Supply support for MBRS1550CT 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The MBRS15xxCT series targets high-current, surface-mount Schottky rectification in space-constrained power conversion systems, emphasizing low V_F, rugged surge capability, and seamless SMT integration.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for MBRS1550CT?

The MBRS1550CT has a V_RRM of 50 V, as confirmed in the Absolute Maximum Ratings table across all versions of the datasheet. This value is fixed for the "50" variant in the MBRS15xxCT family and defines the highest reverse-biased voltage the device can block continuously without breakdown. Designers must ensure circuit peak reverse voltage stays below this rating with appropriate safety margin.

Does MBRS1550CT support automated pick-and-place assembly?

Yes, MBRS1550CT is explicitly designed for automated placement, as stated in its FEATURES section. Its TO-263AB (D2PAK) package, matte tin-plated leads compliant with J-STD-002, and J-STD-020 Level 1 moisture sensitivity eliminate pre-baking requirements and ensure reliable solder joint formation during standard reflow profiles.

What is the forward voltage (V_F) specification for MBRS1550CT at full rated current?

The datasheet specifies V_F ≤ 0.75 V at I_F = 7.5 A and T_J = 25°C. At full 15 A, no maximum V_F is published for MBRS1550CT-only typical curves are provided. Therefore, design margins should rely on the 7.5 A condition or extrapolate conservatively using the 125°C curve (0.65 V @ 7.5 A), not the 15 A point.

Is MBRS1550CT pin-compatible with other parts in the MBRS15xxCT family?

Yes, all MBRS15xxCT variants-including MBRS1535CT, MBRS1560CT, and MBRS15100CT-share identical TO-263AB (D2PAK) packaging, pinout, and mechanical dimensions. The only differences are V_RRM rating and associated electrical parameters; no PCB redesign is needed when upgrading or downgrading within the family.

What thermal resistance values apply to MBRS1550CT in actual PCB layouts?

MBRS1550CT has R_θJC = 2 °C/W (junction-to-case) and R_θJA = 50 °C/W (junction-to-ambient) under standard JEDEC test conditions. In real layouts, R_θJA depends heavily on copper area, layer count, and airflow; the 50 °C/W value assumes minimal 1-in² 2-oz copper on one side. For 15 A operation, thermal simulation or empirical testing with the target board is recommended.