Taiwan Semiconductor Corporation HS2B M4G

Overview

HS2B M4G from Taiwan Semiconductor is a 2 A, 100 V high-efficiency surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring 1.0 V forward voltage at 2 A, 50 ns reverse recovery time, and glass-passivated junction for reliability in switching power supplies and lighting converters.

For engineers reviewing the HS2B M4G datasheet, HS2B M4G pinout, HS2B M4G application, or HS2B M4G equivalent, key selection criteria include repetitive peak reverse voltage (100 V), surge current rating (50 A), thermal resistance (80 °C/W), junction temperature range (−55 to +150 °C), and RoHS/halogen-free compliance for industrial and adapter designs.

Technical Context

This device is a single-die, standard recovery silicon rectifier optimized for high-frequency switching applications. Its 50 ns reverse recovery time and low 1.0 V forward voltage at 2 A support efficient operation in SMPS and DC-DC converters where conduction and switching losses must be minimized.

The DO-214AA (SMB) package provides robust thermal performance with 80 °C/W junction-to-ambient resistance and meets UL 94V-0 flammability requirements. Matte tin-plated leads ensure solderability per J-STD-002, and cathode band polarity marking enables automated placement verification.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration with cathode indicated by molded band. Weight: 0.090 g. UL 94V-0 compliant molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR210 and VS-2EYH01-M3, HS2B M4G offers optimal balance of SMT compatibility, 1.0 V VF, and 50 ns trr in a cost-effective SMB package-making it ideal for new designs prioritizing board area, thermal management, and environmental compliance.

Availability

HS2B M4G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, DC-DC converters, and industrial auxiliary power supplies requiring stable component supply and long-term manufacturability.

Supply support for HS2B M4G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, MOSFETs, and IGBTs, with global distribution and AEC-Q200 qualified products.

The HS2B M4G belongs to TSC's HS2x high-efficiency rectifier family, engineered for high-frequency switching power conversion in cost-sensitive, high-volume consumer and industrial applications.

FAQ

What is the maximum junction temperature rating for HS2B M4G?

The HS2B M4G has a maximum junction temperature (TJ) rating of +150 °C and a minimum of −55 °C. This wide operating range allows reliable deployment in thermally demanding environments such as enclosed LED drivers or industrial power supplies. Derating curves in the datasheet confirm usable current capacity down to 0 A at +150 °C ambient with proper PCB copper area. The HS2B M4G must not exceed this limit during continuous or transient operation.

Is HS2B M4G suitable for use in a 230 VAC input LED driver?

Yes, HS2B M4G is suitable for universal-input LED drivers (90–264 VAC) when used in bridge or half-wave configurations with appropriate derating. Its 100 V VRRM exceeds the peak reverse voltage seen across a single diode in a full-wave bridge (≈170 V for 120 VAC, ≈375 V for 230 VAC), so it must be applied only in half-wave or center-tapped topologies where reverse voltage remains ≤100 V. Always verify circuit topology and voltage stress using worst-case analysis for the HS2B M4G.

Does HS2B M4G have a halogen-free construction?

Yes, HS2B M4G is halogen-free in accordance with IEC 61249-2-21 and RoHS compliant. The molding compound contains no brominated or chlorinated flame retardants, and the matte tin-plated leads meet JEDEC J-STD-002 solderability standards. This makes the HS2B M4G acceptable for environmentally regulated markets including EU, Japan, and China RoHS zones without requiring exemptions.

What is the reverse leakage current specification for HS2B M4G at 125 °C?

At 125 °C junction temperature and rated reverse voltage (100 V), the HS2B M4G exhibits a maximum reverse leakage current (IR) of 150 µA, per the datasheet's electrical specifications table. This value is measured under pulse conditions (PW = 30 ms) and reflects typical thermal-induced minority-carrier generation. Designers should account for this leakage in high-impedance bias networks or precision sensing circuits where microamp-level currents matter.

Can HS2B M4G replace HS2A in an existing design?

Yes, HS2B M4G can replace HS2A in most cases because both share identical DO-214AA (SMB) package, pinout, thermal characteristics, and forward current rating (2 A). The primary difference is VRRM: HS2A is rated for 50 V, while HS2B M4G is rated for 100 V. Substituting HS2B M4G improves reverse voltage margin without altering layout or thermal design-provided the original circuit does not rely on HS2A's lower capacitance or VF profile.