Taiwan Semiconductor Corporation SS23

Overview

SS23 from Taiwan Semiconductor is a 2A, 30V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, optimized for high-efficiency switching power supplies. It delivers low forward voltage (0.50 V at 2 A, 25°C), high surge current capability (50 A), and operates up to 150°C junction temperature - enabling compact, thermally robust DC/DC converter designs.

For engineers reviewing the SS23 datasheet, SS23 pinout, SS23 application, or SS23 equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 0.50 V forward drop at rated current, 50 A IFSM rating, thermal resistance (R_θJL = 24°C/W), and RoHS/halogen-free compliance for industrial and adapter-level power conversion.

Technical Context

The SS23 is a single-die, unidirectional Schottky rectifier with cathode band polarity marking and matte tin-plated leads compliant with J-STD-002 solderability. Its guard ring structure provides over-voltage protection, and it meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.

Designed for high-frequency switching applications, the SS23 exhibits fast recovery (no stored charge), low junction capacitance, and stable reverse leakage (<400 µA at 25°C, <10 mA at 100°C), supporting efficient operation in SMPS topologies where conduction loss and thermal management are critical.

Key Specifications

Pinout & Package

DO-214AA (SMB) surface-mount package with molded plastic body (UL 94V-0), cathode indicated by band, matte tin-plated leads, and 0.093 g typical weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS23, SS23H offers near-identical performance with minor thermal trade-offs, while VS-2EJH03-M3 extends junction temperature capability at the cost of higher forward voltage - making SS23 the optimal balance of efficiency, thermal headroom, and manufacturability for mainstream industrial power supplies.

Availability

SS23 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting drivers requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for SS23 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 consumer markets.

The SS series Schottky rectifiers are engineered for high-efficiency, cost-sensitive power conversion applications - emphasizing low V_F, robust surge capability, and seamless SMT integration across adapter, lighting, and embedded power subsystems.

FAQ

What is the maximum junction temperature rating for SS23?

The SS23 has a maximum junction temperature (T_J) rating of +150°C, allowing reliable operation in high-ambient environments such as enclosed power adapters or LED drivers mounted near heat sources. This rating is validated per the manufacturer's absolute maximum ratings table and applies under specified thermal conditions with proper PCB copper thermal relief. The SS23 must not exceed this limit during steady-state or transient operation to ensure long-term reliability.

Does SS23 have a lead-free and RoHS-compliant construction?

Yes, the SS23 is RoHS compliant and halogen-free, meeting EU Directive 2011/65/EU and JEDEC JS709 standards. Its matte tin-plated leads are solderable per J-STD-002, and the molding compound satisfies UL 94V-0 flammability requirements. These attributes make SS23 suitable for environmentally regulated consumer, industrial, and medical-adjacent applications where substance restrictions apply.

What is the forward voltage drop of SS23 at 2 A and 100°C junction temperature?

The SS23 exhibits a typical forward voltage drop of 0.40 V at 2 A and 100°C junction temperature, as specified in the electrical characteristics table. This reduced V_F versus room-temperature operation reflects the negative temperature coefficient of Schottky diodes and supports stable efficiency across wide thermal operating ranges in real-world power supplies.

Is SS23 suitable for high-frequency switching applications like those using GaN FETs?

Yes, the SS23 is well-suited for high-frequency switching applications including those driven by GaN FETs due to its inherent zero-recovery characteristic, 10,000 V/µs dV/dt rating, and low junction capacitance. Its fast response eliminates reverse recovery losses, reducing EMI and improving overall system efficiency - especially in 100–500 kHz SMPS designs where traditional PN diodes would incur significant switching loss.

What packaging format is SS23 supplied in, and what is the standard reel quantity?

The SS23 is supplied in DO-214AA (SMB) surface-mount package on 3,000-piece tape-and-reel format, per the manufacturer's ordering information. This configuration supports automated pick-and-place assembly and aligns with industry-standard feeder compatibility. Reel dimensions and orientation follow EIA-481 specifications, and the device marking "SS23" is laser-etched on the cathode-end surface for traceability.