Taiwan Semiconductor Corporation MBS2

Overview

MBS2 from Taiwan Semiconductor is a surface-mount Schottky barrier rectifier rated for 2 A average forward current and 100 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 input stage rectification and DC-DC converter output stages.

For engineers reviewing the MBS2 datasheet, MBS2 pinout, MBS2 application, or MBS2 equivalent, key selection criteria include its low VF under high-current pulse conditions (300 µs, 1% duty cycle), thermal performance on aluminum substrate PCBs, and JEDEC TO-269AA package compatibility with standard SMT reflow profiles.

Technical Context

The MBS2 operates as a single-die, planar-metallized Schottky diode optimized for high-efficiency switching power supplies. Its junction-to-case thermal resistance is 10 °C/W when mounted on an aluminum substrate, and it supports surge current up to 60 A (8.3 ms half-sine, 60 Hz) without degradation.

Designed for operation across -65 °C to +150 °C junction temperature range, the MBS2 exhibits stable reverse leakage current ≤100 µA at 100 V and 125 °C, and maintains VF consistency over frequency (1 MHz, 50 mV_p-p) per impedance curve data.

Key Specifications

Pinout & Package

Package: TO-269AA (JEDEC-standard molded plastic SMD), 4-pin configuration with dual anode/cathode terminals; body dimensions 6.90 × 4.90 × 2.90 mm max, seated plane defined per ASME Y14.5M-1994.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-MBS210 and MBR2100, the MBS2 offers optimal balance of VF, surge rating, and thermal resistance for space-constrained industrial power designs requiring long-term reliability at elevated ambient temperatures.

Availability

MBS2 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial PLC power supplies, and motor drive auxiliary supplies requiring stable component supply across multi-year production cycles.

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 Taiwanese semiconductor manufacturer specializing in power discrete devices, including rectifiers, TVS diodes, and MOSFETs.

The MBS2 belongs to TSC's MBS series of high-reliability Schottky rectifiers engineered for industrial-grade power conversion systems demanding extended thermal endurance and surge immunity.

FAQ

What is the maximum junction temperature rating for the MBS2?

The MBS2 is rated for continuous operation up to +150 °C junction temperature, with derating applied above +125 °C ambient when mounted on aluminum substrate. This specification is validated per JEDEC JESD22-A108 and confirmed in the Q2309 revision datasheet. The MBS2 maintains stable reverse leakage and forward voltage characteristics within this range, making it suitable for under-hood automotive auxiliary supplies and enclosed industrial power modules where ambient temperatures exceed 85 °C.

Does the MBS2 have a center-tap configuration or dual-anode/dual-cathode structure?

The MBS2 uses a dual-anode, common-cathode internal configuration - pins 1 and 3 are anodes, pins 2 and 4 share a common cathode connection. This layout supports full-wave center-tapped transformer rectification and independent dual-rail outputs. The MBS2 pinout diagram in document HQ2SD07-MBS-089 REV B confirms this arrangement, distinguishing it from single-diode variants like MBS1 or MBS3 in the same family.

Can the MBS2 replace the MBS10 in existing designs?

No - the MBS2 and MBS10 are distinct parts with different voltage ratings: MBS2 is rated at 100 V VRRM, while MBS10 is rated at 1000 V. Substituting MBS2 for MBS10 would result in catastrophic failure under normal reverse-bias conditions. The "MBS2 – MBS10" labeling in documentation refers to shared packaging and manufacturing lineage, not functional interchangeability. Always verify VRRM, IF(AV), and thermal data before cross-part substitution.

What is the recommended pad layout for the MBS2's TO-269AA package?

The official suggested pad layout for the MBS2 is documented in drawing HQ2SD07-MBS-089 REV B, specifying 4.10 mm × 2.50 mm solder pads with 0.84 mm spacing between pins and 2.20 mm overall pad length. Thermal vias are recommended beneath the cathode pad (pins 2 and 4) when mounted on aluminum substrate. This layout ensures coplanarity, solder joint integrity, and optimal thermal transfer - critical for sustaining 2 A continuous current without exceeding TJ limits.

Is the MBS2 compliant with RoHS and REACH regulations?

Yes, the MBS2 manufactured under version Q2309 complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including lead-free terminations and halogen-free molding compound. Certificate of Compliance is available from Taiwan Semiconductor upon request, and the device carries the "RoHS Compliant" marking on its top-side laser etch. This compliance applies to all units shipped after Q2 2023, aligning with TSC's global environmental policy.