Taiwan Semiconductor Corporation SK83C

Overview

SK83C from Taiwan Semiconductor is a 30 V, 8 A Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.55 V at 8 A, 25°C), high surge capability (150 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in compact AC/DC adapters and DC/DC converters.

For engineers reviewing the SK83C datasheet, SK83C pinout, SK83C application, or SK83C equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 0.55 V forward drop at rated current, thermal resistance of 20°C/W, moisture sensitivity level 1 compliance, and DO-214AB mechanical footprint compatibility with automated SMT assembly.

Technical Context

The SK83C employs a single-die Schottky junction optimized for low conduction loss in medium-voltage switching power supplies. Its guard ring structure enhances ruggedness against transient overvoltage events, while the matte tin-plated leads ensure reliable solderability per J-STD-002.

With a critical rate of rise of off-state voltage (dV/dt) of 10,000 V/µs and reverse leakage of ≤0.5 mA at 25°C (≤15 mA at 100°C), the SK83C supports stable operation in high-frequency SMPS topologies where fast recovery and low noise are essential.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-8EWH03FN-M3/45 and SB830, the SK83C offers superior thermal performance (20°C/W vs. 25°C/W) and higher surge robustness (150 A vs. 100 A), making it optimal for industrial-grade 24–30 V output converters requiring long-term reliability under thermal and electrical stress.

Availability

SK83C is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial DC/DC converters requiring stable component supply, consistent parametric performance, and full traceability across production batches.

Supply support for SK83C 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 SK83C belongs to TSC's SK8xC Schottky rectifier family, engineered specifically for high-efficiency, low-profile switching power supplies where low VF, high surge tolerance, and MSL Level 1 handling are mandatory.

FAQ

What is the maximum junction temperature rating for the SK83C?

The SK83C has a maximum junction temperature (TJ max) of +150°C, enabling reliable operation in enclosed or high-ambient-temperature environments such as sealed LED drivers or industrial control enclosures. This rating is validated per the absolute maximum ratings table in the official TSC SK82C–SK810C datasheet Version L2102. The SK83C maintains specified electrical performance up to this limit when thermal design respects its 20°C/W RθJA value.

Does the SK83C have a guard ring structure, and what benefit does it provide?

Yes, the SK83C incorporates a guard ring structure explicitly cited in its features list. This design enhances voltage standoff stability and improves ruggedness against transient overvoltage events-such as line surges or inductive kickback-without premature breakdown. In practice, this allows the SK83C to maintain reliable operation in unregulated input stages of flyback converters where voltage spikes exceed nominal VRRM, extending product lifetime in real-world deployments.

What is the forward voltage of the SK83C at 8 A and 25°C, and how is it measured?

The forward voltage (VF) of the SK83C is 0.55 V at 8 A and 25°C, measured under pulsed conditions with pulse width = 0.3 ms (per datasheet Note 1). This low VF directly reduces conduction losses-calculating to ~4.4 W at full load-making the SK83C especially effective in high-efficiency, thermally constrained applications like compact USB PD chargers where minimizing heat generation is critical.

Is the SK83C compliant with RoHS and halogen-free standards?

Yes, the SK83C is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the "Features" section of the official TSC documentation. These certifications ensure the SK83C meets environmental and safety requirements for global consumer electronics, industrial equipment, and automotive-adjacent applications-enabling seamless integration into export-ready BOMs without material declaration concerns.

What packaging and moisture sensitivity level does the SK83C use?

The SK83C is supplied in DO-214AB (SMC) package on 3,000-piece tape-and-reel, with moisture sensitivity level (MSL) rated at Level 1 per J-STD-020. This means the device has unlimited floor life and can be processed using standard SMT reflow profiles without baking or dry-pack handling-reducing manufacturing overhead and eliminating yield risk associated with moisture-induced popcorning during assembly.