Diodes Incorporated S5KC-13

Overview

S5KC-13 from Diodes Incorporated is a 800 V PIV, 5.0 A average forward current, glass passivated surface-mount rectifier in SMC package, featuring 1.15 V max forward voltage at 5.0 A and 100 A non-repetitive surge capability; used in AC/DC front-end rectification for industrial power supplies and LED drivers.

For engineers reviewing the S5KC-13 datasheet, S5KC-13 pinout, S5KC-13 application, or S5KC-13 equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (10 °C/W), surge robustness (100 A @ 8.3 ms), and RoHS-compliant lead-free plating for automated assembly.

Technical Context

This device operates as a single-phase, half-wave silicon rectifier with glass-passivated junction for enhanced reliability under repetitive surge stress. Its 800 V peak repetitive reverse voltage (VRRM) and 5.0 A average output current (IO) are rated at terminal temperature of +75°C, requiring derating for capacitive loads.

Thermal performance is defined by 10 °C/W junction-to-terminal resistance when mounted on 5.0 mm² copper pads; reverse leakage remains ≤250 µA at +125°C and rated blocking voltage, supporting stable operation in high-ambient environments.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode indicated by band or notch.

Key Features

Applications

Availability

S5KC-13 is available at Aetrix Electronics and suitable for industrial power supplies, LED drivers, and automated-assembly power modules requiring stable component supply with full RoHS and green compliance.

Supply support for S5KC-13 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 and signal integrity solutions for industrial and consumer markets.

The S5x series rectifiers are designed for cost-effective, high-surge-capability AC/DC conversion in space-constrained SMT applications where thermal performance and regulatory compliance are critical.

FAQ

What is the maximum junction temperature for S5KC-13?

The S5KC-13 has an operating junction temperature range of –65°C to +150°C. Its thermal design relies on junction-to-terminal resistance (RθJT = 10 °C/W) and PCB copper pad area; actual TJ depends on IO, ambient conditions, and heatsinking. Derating curves in Figure 1 define usable current versus terminal temperature.

Is S5KC-13 suitable for full-wave bridge configurations?

Yes - S5KC-13 is a single diode rated for 800 V PIV and 5.0 A average current, making it appropriate for use in discrete full-wave bridge designs (e.g., four S5KC-13 devices). Its glass passivation and surge rating support reliable operation in such topologies under line-voltage transients.

How does the 1.15 V forward voltage affect system efficiency?

At 5.0 A DC output, the 1.15 V forward drop results in 5.75 W conduction loss. In a 100 W power supply, this contributes ~5.8% of total losses before regulation; efficiency impact scales linearly with load current and is most significant at full load in low-voltage-output designs.

Does S5KC-13 require derating for capacitive input filters?

Yes - the datasheet specifies that average forward current must be derated by 20% when used with capacitive loads due to increased peak current and thermal stress. For a 5.0 A rated device, this means limiting continuous IO to 4.0 A in capacitor-input rectifier stages.