1812Y1000123MJTE03

Overview

The Knowles Syfer 1812Y1000123MJTE03 is a feed-through multilayer ceramic capacitor in an 1812 (4532 metric) package. It features a capacitance of 0.012 µF with a rated voltage of 100 VDC and a maximum current rating of 50 mA. The component utilizes C0G/NP0 dielectric characteristics for stable performance across temperatures ranging from -55°C to +125°C. Designed for surface mount installation, it provides effective electromagnetic interference filtering in compact circuit layouts.

Feature Summary

• Integrated feed-through architecture combining capacitance and shielding within a single SMD component
• High-current handling capability up to 50 mA for power line filtering applications
• C0G/NP0 dielectric material ensures minimal capacitance variation over temperature and voltage changes

Applications

• Electromagnetic interference filtering on DC power input lines
• Signal integrity protection in high-frequency communication circuits
• Noise suppression in automotive electronic control units

Procurement Notes

Verify the specific suffix 'MJTE03' against official manufacturer documentation to confirm the feed-through configuration and terminal plating specifications. Standard MLCC part numbers may differ significantly from this specialized feed-through variant. Ensure compatibility with PCB pad designs intended for through-hole style components adapted for surface mounting.

Selection Notes

Select this component when board space constraints prohibit discrete filter networks requiring separate inductors and capacitors. The integrated design simplifies layout while maintaining high isolation. Confirm that the 50 mA current rating exceeds the maximum expected load current to prevent thermal degradation or failure during operation.

Part Context

This component belongs to the Knowles Syfer FlexiCap™ series, which specializes in high-reliability capacitors for demanding environments. The 1812Y prefix indicates the 1812 case size and general product family. As a feed-through device, it differs from standard parallel-plate capacitors by incorporating a conductive path through the center electrode.

Replacement Considerations

Direct substitutes must match the 1812 feed-through form factor and 50 mA current rating. Generic MLCCs lack the internal conductive path and will not provide equivalent filtering performance. Consult manufacturer cross-reference lists for verified equivalents with identical terminal configurations.