SFJEC5000103MX1

Overview

The Knowles Syfer SFJEC5000103MX1 is a high-voltage multilayer ceramic capacitor (MLCC) designed for demanding industrial and power electronics applications. It features a capacitance of 10 nF with a tolerance of ±20% and a rated DC voltage of 500 V. The component utilizes X7R dielectric material, providing stable performance across a wide temperature range from -55°C to +125°C. Packaged in a compact 1812 (4532 Metric) surface-mount case size, it offers robust mechanical stability and reliable electrical characteristics suitable for filtering and decoupling in high-energy circuits.

Feature Summary

• High voltage rating of 500 V DC for robust operation in power systems
• X7R dielectric material ensures stable capacitance over a broad temperature range
• Compact 1812 surface-mount package facilitates automated assembly and space-efficient design

Applications

• Industrial motor drive inverters
• High-frequency switching power supplies
• Uninterruptible power supply (UPS) systems

Procurement Notes

Verify the specific suffix codes against official Knowles Syfer documentation to confirm exact termination plating and packaging format. Ensure that the selected variant matches the required moisture sensitivity level and reflow soldering profile for your manufacturing process. Cross-reference the manufacturer's latest datasheet to confirm availability and any recent design changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when circuit requirements demand a 500 V rating with moderate capacitance in a standard 1812 footprint. The X7R dielectric is appropriate for general-purpose decoupling where slight capacitance variation with voltage is acceptable. Consider thermal derating curves provided in the datasheet to ensure reliability under continuous operating conditions and peak transient loads within the specified temperature range.

Part Context

This part belongs to the Knowles Syfer SFJE series, which focuses on high-reliability MLCCs for industrial and automotive sectors. The series emphasizes enhanced mechanical strength and consistent electrical performance under harsh environmental conditions. Components in this line are engineered to meet stringent industry standards for long-term durability and stability in critical electronic systems.

Replacement Considerations

Consult official cross-reference guides for equivalent parts from other manufacturers offering similar 500 V, 10 nF, 1812 X7R specifications. Verify pin compatibility, physical dimensions, and electrical parameters such as ESR and insulation resistance before substitution. Ensure that any alternative component meets the same safety certifications and reliability standards required by the original design.