1812Y1000224MSTE03

Overview

The Knowles Syfer 1812Y1000224MSTE03 is a feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 0.22 µF with a rated DC voltage of 100V and a current rating of 50 mA. The component utilizes a C0G/NP0 dielectric material, ensuring stable performance across a temperature range of -55°C to +125°C. Housed in an 1812 (4532 metric) surface-mount package, it incorporates a three-pad footprint configuration optimized for PCB integration.

Feature Summary

• Integrated feed-through architecture providing effective electromagnetic interference filtering within a compact surface-mount form factor.
• Utilizes C0G/NP0 dielectric technology to maintain consistent capacitance values under varying thermal conditions.
• Designed with a specialized three-pad layout to facilitate robust mechanical attachment and signal integrity.

Applications

• High-frequency noise suppression in sensitive electronic circuits
• Electromagnetic interference filtering for board-level applications
• Signal conditioning in automotive electronics requiring AEC-Q200 compliance

Procurement Notes

Verify the specific suffix MSTE03 against official Knowles Syfer documentation to confirm the terminal configuration and barrier materials. Ensure the design accommodates the unique three-pad footprint required for this feed-through topology rather than standard two-terminal MLCC layouts. Cross-reference the 50 mA current rating with circuit requirements to prevent operational limits exceedance during procurement validation.

Selection Notes

Select this component when integrated EMI filtering is required without adding discrete inductors or complex networks. The 1812 package offers a balance between capacitance density and thermal management capabilities. Consider the 100V rating relative to peak transient voltages in the target application environment to ensure long-term reliability and adherence to derating guidelines specified by the manufacturer.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which emphasizes enhanced mechanical durability for board-flex sensitive environments. The 1812Y prefix indicates a 100V rated X7R or C0G variant within the broader 1812 family. As a feed-through device, it differs from standard capacitors by integrating the ground path directly through the component body, reducing parasitic inductance significantly compared to conventional SMD implementations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify compatibility with existing footprints as feed-through components often require distinct pad geometries compared to standard MLCCs.