Taiwan Semiconductor Corporation SK210A

Overview

SK210A from Taiwan Semiconductor is a 2 A, 100 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, optimized for high-efficiency switching power supplies with low forward voltage (0.85 V at 2 A, 25°C) and low reverse leakage (0.1 mA at rated VR, 25°C). It delivers high surge current capability (50 A IFSM), operates up to 150°C junction temperature, and features guard ring over-voltage protection.

For engineers reviewing the SK210A datasheet, SK210A pinout, SK210A application, or SK210A equivalent, key selection criteria include its 100 V VRRM rating, thermal resistance (88°C/W), moisture sensitivity level 1 compliance, RoHS/halogen-free status, and suitability for compact, high-frequency SMPS designs requiring low conduction loss.

Technical Context

The SK210A is a single-die, unidirectional Schottky rectifier designed for DC output rectification in high-frequency switching topologies. Its low VF minimizes conduction losses, while its 10,000 V/µs dV/dt rating supports fast-switching environments without spurious turn-on.

Thermally, it uses a DO-214AC (SMA) package with matte tin-plated leads and UL 94V-0 molding compound. Junction-to-ambient thermal resistance is 88°C/W, and maximum junction temperature is rated at +150°C - enabling operation in thermally constrained industrial and adapter applications.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), surface-mount, cathode indicated by band. Weight ≈ 0.070 g. Meets JESD201 Class 2 whisker test and J-STD-020 Level 1 moisture sensitivity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS210H and SB2100, the SK210A offers balanced VF/IR trade-off (0.85 V / 0.1 mA), guard ring protection not present in SB2100, and broader temperature qualification (150°C TJ) than many alternatives - making it ideal for thermally demanding, reliability-critical SMPS designs.

Availability

SK210A is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and LED lighting drivers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for SK210A 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 SK2xxA series was developed specifically for high-efficiency, surface-mount AC/DC and DC/DC power conversion, emphasizing low VF, high surge robustness, and JEDEC-compliant packaging for automated manufacturing.

FAQ

What is the maximum junction temperature rating for SK210A?

The SK210A has a maximum junction temperature (TJ max) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet (Version S2307). This allows sustained operation in high-ambient environments such as enclosed LED drivers or industrial power modules where board temperatures exceed 100°C. The SK210A must be mounted on a PCB with adequate copper area to maintain junction temperature within this limit under full load.

Does SK210A have a guard ring structure, and what benefit does it provide?

Yes, the SK210A incorporates a guard ring structure explicitly stated in its features list. This design enhances edge termination robustness, improving resistance to avalanche breakdown during voltage transients - particularly useful in flyback and LLC converter outputs where reflected spikes occur. Unlike basic Schottky diodes, the guard ring in SK210A allows operation near VRRM without external clamping in many cases.

Is SK210A compatible with lead-free reflow soldering processes?

Yes, SK210A is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its moisture sensitivity level is rated at Level 1 per J-STD-020 - meaning it can be stored indefinitely in dry pack and placed directly into reflow without baking. The DO-214AC package also withstands peak reflow temperatures up to 260°C.

What is the typical forward voltage of SK210A at 2 A and 100°C junction temperature?

The datasheet does not specify VF at 100°C for SK210A; only the 25°C value (0.85 V typ) is provided. However, Figure 12 shows typical forward characteristics up to 150°C, indicating VF decreases with rising temperature - approximately 0.78–0.80 V at 100°C and 2 A. Designers should reference the SK210A's Fig.12 curve for accurate thermal derating in high-temperature applications.

How does SK210A compare to SK29A in terms of reverse leakage and voltage rating?

SK210A and SK29A share identical electrical test conditions and packaging, but differ in VRRM (100 V vs. 90 V) and IR (0.1 mA vs. 0.1 mA at 25°C). Their reverse leakage is equal at 25°C, but SK210A's higher voltage rating increases electric field stress - yet both maintain the same 0.1 mA IR spec due to optimized die design. At 125°C, SK210A's IR remains ≤2 mA, matching SK29A's rating.