Taiwan Semiconductor Corporation MBRS15150CT-Y

Overview

MBRS15150CT-Y from Taiwan Semiconductor is a 15 A, 150 V dual-die Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.95 V forward voltage at 7.5 A / 25°C, 150 A surge capability, and junction-to-case thermal resistance of 2 °C/W. It serves as a high-efficiency output rectifier in high-frequency DC–DC converters.

For engineers reviewing the MBRS15150CT-Y datasheet, MBRS15150CT-Y pinout, MBRS15150CT-Y application, or MBRS15150CT-Y equivalent, key selection criteria include repetitive peak reverse voltage (150 V), forward voltage at rated current and temperature, thermal resistance, surge rating, and dual-common-cathode configuration for synchronous or center-tapped topologies.

Technical Context

This device integrates two independent Schottky diodes in a single TO-263AB thermally enhanced surface-mount package with common cathode connection. Its low forward voltage and fast switching enable high efficiency in 100–500 kHz SMPS designs where conduction loss dominates.

The 150 V V_RRM, 150 A I_FSM, and 2 °C/W R_θJC support operation under transient overloads and sustained high-current loads up to 15 A continuous, with junction temperature maintained ≤150 °C when properly heatsinked.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount, thermally enhanced, with exposed metal tab serving as common cathode terminal and primary heat path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-15BQ015 and MBR15150CT, MBRS15150CT-Y provides guaranteed halogen-free construction and J-STD-020 Level 1 moisture sensitivity-critical for high-yield SMT manufacturing-while maintaining identical electrical performance to MBR15150CT in 150 V applications.

Availability

MBRS15150CT-Y is available at Aetrix Electronics and suitable for switching mode power supplies, laptop adapters, and industrial DC–DC converters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.

Supply support for MBRS15150CT-Y 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 for industrial and computing markets.

The MBRS15xxCT-Y series targets high-efficiency, high-reliability AC–DC and DC–DC power conversion, with emphasis on thermal robustness, automated assembly compatibility, and compliance with environmental standards including RoHS and halogen-free requirements.

FAQ

What is the maximum junction temperature for MBRS15150CT-Y?

The maximum junction temperature for MBRS15150CT-Y is 150 °C, as specified in the Absolute Maximum Ratings table. This value defines the upper thermal limit for reliable operation; exceeding it risks permanent degradation of the Schottky junction. Thermal design must ensure that under worst-case ambient and power dissipation conditions, the actual junction temperature remains at or below this threshold. The device's R_θJC of 2 °C/W allows precise calculation of required heatsinking when combined with measured case temperature.

Is MBRS15150CT-Y suitable for synchronous rectification control?

Yes, MBRS15150CT-Y is suitable for use with synchronous rectification controllers due to its fast recovery characteristics and low forward voltage. While it is a passive Schottky diode-not a controlled switch-it functions as the rectifying element in quasi-resonant or active-clamp flyback topologies where a controller drives external MOSFETs. Its 0.95 V V_F at 7.5 A/25°C reduces conduction loss relative to standard PN diodes, making MBRS15150CT-Y a preferred choice where gate-drive complexity or cost precludes full synchronous designs.

What does the "-Y" suffix indicate in MBRS15150CT-Y?

The "-Y" suffix in MBRS15150CT-Y denotes Taiwan Semiconductor's standard green, halogen-free, RoHS-compliant packaging variant. It specifies matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and moisture sensitivity level 1 per J-STD-020. This suffix distinguishes it from non-halogen-free or legacy plating variants and ensures compatibility with lead-free reflow profiles and environmentally regulated end equipment.

How is thermal performance characterized for MBRS15150CT-Y?

Thermal performance for MBRS15150CT-Y is characterized by two key parameters: junction-to-case thermal resistance (R_θJC) of 2 °C/W and junction-to-ambient resistance (R_θJA) of 50 °C/W. R_θJC reflects heat transfer from die to the exposed metal tab and is critical for heatsink-based cooling; R_θJA applies to board-level natural convection only. Accurate thermal modeling requires using R_θJC with measured case temperature and appropriate interface material data, as R_θJA varies significantly with PCB copper area and airflow.

Does MBRS15150CT-Y have a guard ring, and what is its function?

Yes, MBRS15150CT-Y incorporates a guard ring structure, explicitly listed under Features in the datasheet. Its function is to improve edge termination robustness and suppress premature avalanche breakdown under transient overvoltage conditions-such as line surges or inductive kickback-without requiring external snubbers or derating the rated V_RRM. This enhances reliability in unregulated or loosely regulated input stages while maintaining the full 150 V reverse blocking capability.