1812J5000103MXTE03

Overview

The Knowles Syfer 1812J5000103MXTE03 is a Class 1 multilayer ceramic feed-through capacitor designed for surface-mount applications. It features a C0G (NP0) dielectric material, ensuring stable performance across varying conditions. The component offers a capacitance of 10 nF with a tolerance of ±20%. It is rated for a DC voltage of 500V and operates within a temperature range of -55°C to +125°C. The physical dimensions conform to the 1812 (4532 metric) package size, measuring 4.5 mm in length, 3.2 mm in width, and 2.5 mm in height.

Feature Summary

• Integrates a pass-through architecture that allows signal traces to penetrate the capacitor body, reducing parasitic inductance for high-frequency filtering.

Applications

• High-frequency noise suppression in RF circuits
• Power line filtering for sensitive electronic components
• EMI/RFI mitigation in communication equipment

Procurement Notes

Verify the specific suffix MXTE03 against official Knowles Syfer documentation to confirm terminal plating and packaging details. Ensure the selected variant matches the required current rating and impedance characteristics for the target circuit design before procurement.

Selection Notes

Select this component when low parasitic inductance is critical for high-speed signal integrity. The C0G dielectric provides minimal capacitance variation with temperature and voltage, making it suitable for precision timing or coupling applications where stability is paramount over high capacitance values.

Part Context

This part belongs to the Knowles Syfer general type MLCC family, specifically engineered as a feed-through device. Unlike standard capacitors, its internal structure supports through-hole-like current paths on a surface-mount footprint, bridging the gap between traditional SMD components and axial leaded filters.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative feed-through capacitors by matching the 1812 footprint, 500V rating, and 10 nF capacitance specifications.