Taiwan Semiconductor Corporation MBRS1090

Overview

MBRS1090 from Taiwan Semiconductor is a 10A, 90V Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, optimized for high-efficiency DC/DC conversion and switching power supplies with low forward voltage (0.85 V at 10 A, 25°C) and high surge capability (120 A IFSM). It features guard ring overvoltage protection, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free compliance.

For engineers reviewing the MBRS1090 datasheet, MBRS1090 pinout, MBRS1090 application, or MBRS1090 equivalent, key selection considerations include its 90 V repetitive peak reverse voltage, 0.85 V forward drop at rated current, 2 °C/W junction-to-case thermal resistance, and suitability for high-density SMPS designs requiring fast recovery and low conduction loss.

Technical Context

The MBRS1090 operates as a single-die Schottky rectifier with metal–semiconductor junction enabling near-zero reverse recovery time and minimal switching loss. Its 90 V VRRM rating targets mid-voltage industrial and telecom power rails, while the 175 °C maximum junction temperature supports operation in thermally constrained environments.

Thermal performance is defined by R_θJC = 2 °C/W and R_θJA = 60 °C/W, indicating efficient heat transfer to the PCB copper pour via the exposed cathode tab. Reverse leakage remains ≤5 mA at 125 °C, supporting stable operation under elevated ambient conditions.

Key Specifications

Pinout & Package

Package: TO-263AB (D2PAK), surface-mount with exposed cathode tab for thermal and electrical connection. Case meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-10BQ090P-M3/45, MBRS1090 offers nearly identical electrical and thermal specs but differs in marking and qualification history; versus MBR1090CT, MBRS1090 provides superior thermal management and SMT compatibility at the cost of single-diode topology.

Availability

MBRS1090 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and adapter designs requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.

Supply support for MBRS1090 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, serving industrial, computing, and telecom markets since 1979.

The MBRS1090 belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in space- and thermal-constrained applications.

FAQ

What is the maximum junction temperature rating for MBRS1090?

The MBRS1090 has a maximum junction temperature (TJ max) of 175 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating enables reliable operation in high-ambient environments such as enclosed industrial power supplies or base station equipment. Derating curves confirm usable current capacity up to 125 °C case temperature, and thermal design must maintain TJ below 175 °C under worst-case load and ambient conditions. The MBRS1090 achieves this with R_θJC = 2 °C/W and proper PCB copper area.

Is MBRS1090 RoHS and halogen-free compliant?

Yes, MBRS1090 is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the Taiwan Semiconductor datasheet under FEATURES. The molding compound and plating meet environmental standards required for export to EU and other regulated markets. Compliance is verified through material declarations and third-party testing; no exemptions apply. This applies to all production lots of MBRS1090, including those marked with K2103 revision.

What is the forward voltage of MBRS1090 at 10 A and 125 °C?

The forward voltage of MBRS1090 is 0.71 V (typical) at 10 A and 125 °C, per the ELECTRICAL SPECIFICATIONS table in the Taiwan Semiconductor datasheet. This value reflects reduced VF at elevated temperature due to Schottky physics and confirms stable conduction performance under thermal stress. It is measured under pulsed conditions (PW = 0.3 ms) and supports accurate loss modeling for thermal simulation in high-temperature applications using MBRS1090.

Does MBRS1090 have a guard ring structure?

Yes, MBRS1090 incorporates a guard ring structure for overvoltage protection, as confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. This design feature suppresses edge breakdown and improves ruggedness against transient voltage spikes and non-uniform field distribution. It contributes to the device's ability to withstand repetitive surges up to 120 A and supports long-term reliability in noisy power environments where MBRS1090 is deployed.

What packaging format is used for MBRS1090?

MBRS1090 is supplied in TO-263AB (D2PAK) package on 800-unit tape-and-reel, per the ORDERING INFORMATION section of the Taiwan Semiconductor datasheet. The package features an exposed cathode tab for thermal and electrical connection, matte tin-plated leads compliant with J-STD-002, and UL 94V-0 molding compound. Moisture sensitivity level is J-STD-020 Level 1, allowing standard SMT processing without baking.