Diodes Incorporated S2KA-13-F

Overview

S2KA-13-F from Diodes Incorporated is a surface-mount, glass-passivated general-purpose rectifier diode rated for 800 V peak repetitive reverse voltage, 1.5 A average forward current at 100°C terminal temperature, and 50 A non-repetitive surge current. It features low 1.15 V forward voltage drop at 1.5 A, 20 pF typical junction capacitance, and is packaged in the SMB (DO-214AA) case for high-density power supply input stages.

For engineers reviewing the S2KA-13-F datasheet, S2KA-13-F pinout, S2KA-13-F application, or S2KA-13-F equivalent, key selection criteria include its 800 V blocking capability, thermal resistance of 20 °C/W (junction-to-terminal), RoHS-compliant matte tin plating, and suitability for automated assembly in AC/DC front-end rectification where reliability under surge and thermal stress is critical.

Technical Context

This SMB-packaged silicon rectifier operates as a single-phase, half-wave device with defined derating curves for forward current versus terminal temperature and surge current versus 60 Hz cycle count. Its glass-passivated die construction ensures stable reverse leakage-5.0 µA at 25°C and 125 µA at 125°C-at rated DC blocking voltage.

The diode exhibits a typical junction capacitance of 20 pF measured at 1 MHz and 4.0 V reverse bias, and its forward voltage is characterized across instantaneous current up to 1.5 A with pulse width of 300 µs. Thermal performance assumes mounting on a PCB with 5.0 mm² copper pad heat sink per JEDEC standard.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), molded plastic case with UL 94V-0 flammability rating, cathode indicated by band or notch on body, matte tin-plated terminals solderable per MIL-STD-202 Method 208.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar general-purpose rectifier applications.

Compared with STTH1L80S and MUR160, S2KA-13-F delivers higher 1.5 A current capacity in an SMB SMT package while maintaining 800 V blocking-making it optimal for new SMT-based 277 VAC power supplies where thermal margin and surge resilience are prioritized over minimal VFM.

Availability

S2KA-13-F is available at Aetrix Electronics and suitable for AC/DC power supply input stages, industrial motor drive front-ends, and LED driver bulk rectification requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.

Supply support for S2KA-13-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The S2x series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, thermally robust AC/DC conversion in high-volume power supply applications where surge immunity and long-term leakage stability are essential.

FAQ

What is the maximum allowable junction temperature for S2KA-13-F?

The device has an operating temperature range of –65°C to +150°C for both junction and storage. Its thermal design relies on terminal temperature (TT), not junction temperature directly; with RθJT = 20°C/W and I(AV) = 1.5 A at TT = 100°C, the junction temperature remains within safe limits when mounted on a 5.0 mm² copper pad per JEDEC guidelines.

Is S2KA-13-F suitable for use in a full-wave bridge configuration?

Yes-S2KA-13-F is a single discrete rectifier diode and can be used in any discrete bridge arrangement, including full-wave center-tapped or full-wave bridge topologies. Its 800 V VRRM and 50 A IFSM make it appropriate for bridges handling up to 400 VDC output; ensure matching diodes are used for balanced current sharing and thermal distribution.

Does S2KA-13-F require pre-baking before reflow soldering?

No. The device is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking. This eliminates process steps and reduces risk of moisture-induced popcorning during lead-free reflow profiles.

How does the green molding compound affect reliability or performance?

The halogen- and antimony-free green compound meets IEC 61249-2-21 requirements without compromising mechanical strength or thermal cycling endurance. It provides identical electrical insulation and flammability (UL 94V-0) performance as standard compounds, with no impact on VRRM, IRM, or thermal resistance-only environmental compliance is enhanced.