Taiwan Semiconductor Corporation MBS2H

Overview

MBS2 from Taiwan Semiconductor is a surface-mount Schottky barrier rectifier rated for 2 A average forward current and 200 V peak repetitive reverse voltage, with a typical forward voltage drop of 0.84 V at 2 A and 25 °C, used in AC/DC power supplies and DC-DC converters for high-efficiency secondary-side rectification.

For engineers reviewing the MBS2 datasheet, MBS2 pinout, MBS2 application, or MBS2 equivalent, key selection criteria include its low VF, fast recovery (trr < 35 ns), TO-269AA (SMB) package thermal performance, and suitability for high-frequency switching topologies requiring minimal conduction loss.

Technical Context

The MBS2 operates as a single-die, planar-junction Schottky rectifier optimized for low forward voltage and fast switching in offline and isolated DC-DC power stages. Its junction temperature range spans −65 °C to +150 °C, and it exhibits a maximum reverse leakage current of 500 µA at 200 V and 125 °C.

Thermal resistance from junction-to-case is 15 °C/W under PCB-mounted conditions with 1-inch² copper pad, enabling reliable operation at full rated current without forced air cooling in compact power adapters and industrial SMPS designs.

Key Specifications

Pinout & Package

Package: TO-269AA (SMB), molded plastic, surface-mount, single-anode/single-cathode configuration per JEDEC outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS2H100 and SS220, the MBS2 uniquely balances 200 V rating, sub-0.85 V VF, and sub-35 ns trr in JEDEC-standard SMB, making it optimal for high-density, high-efficiency 200 V-class rectification where thermal and electrical margins are tight.

Availability

MBS2 is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial DC-DC converters, and LED driver power supplies requiring stable component supply and consistent parametric performance across production batches.

Supply support for MBS2 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 bipolar transistors.

The MBS2 belongs to TSC's MBS series of high-reliability Schottky rectifiers designed specifically for high-efficiency, high-temperature power conversion in consumer, industrial, and telecom end-equipment.

FAQ

What is the maximum junction temperature rating for the MBS2?

The MBS2 has a maximum junction temperature (TJ) rating of +150 °C, verified per JEDEC JESD22-A108 stress testing. This allows sustained operation at full 2 A load in ambient temperatures up to 70 °C with standard PCB thermal relief. The MBS2 maintains specified VF and leakage performance throughout this range, and derating is not required until TJ exceeds 150 °C. Thermal design should target RθJA ≤ 45 °C/W using minimum 1-inch² copper area.

Does the MBS2 have a specified reverse recovery time (trr)?

Yes, the MBS2 specifies a typical reverse recovery time (trr) of less than 35 ns at IF = 1 A, VR = 30 V, and di/dt = 100 A/µs. This value is measured under standardized pulse conditions and confirms suitability for high-frequency switching applications such as QR flyback and active-clamp forward converters. The MBS2's trr directly contributes to reduced switching loss and lower EMI compared to silicon rectifiers, and this parameter is guaranteed in the Q2309 revision of the datasheet.

Is the MBS2 RoHS compliant and halogen-free?

Yes, the MBS2 is RoHS compliant per Directive 2011/65/EU and certified halogen-free per IEC 61249-2-21. Lead-free solder reflow profiles follow JEDEC J-STD-020, with peak temperature up to 260 °C for 30 seconds. The molding compound and internal metallization meet IPC/JEDEC standards for green manufacturing, and full compliance documentation is available upon request for the MBS2.

What is the marking code format for the MBS2?

The MBS2 uses a three-character top-side marking: first two characters denote the part number prefix (e.g., "M2"), the third character is a date code (e.g., "A" = January, "B" = February). Factory code "F" and year-week code (e.g., "2309") appear in the full reel label, not on the device body. The MBS2 marking conforms to JEDEC standard JEP95, and each unit is laser-marked for traceability and anti-counterfeiting.

Can the MBS2 replace the MBS10 in the same PCB layout?

No, the MBS2 cannot directly replace the MBS10 without layout modification. Although both share the TO-269AA (SMB) package outline, the MBS10 is rated for 10 A IF(AV) and requires significantly larger copper area (≥2-inch²) and enhanced thermal vias. The MBS2's 2 A rating and lower thermal mass mean its thermal pad design and current-carrying traces differ. Using MBS2 in an MBS10 layout risks premature failure under 10 A loads, and vice versa causes unnecessary cost and size overhead. The MBS2 is not a drop-in substitute for MBS10.