1812J5000392MXTE03

Overview

The Knowles Syfer 1812J5000392MXTE03 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 3900 pF with a voltage rating of 500 VDC and an X7R dielectric. The component operates within a temperature range of -55°C to +125°C and supports a continuous current of 50 mA. Housed in an 1812 (4532 metric) package, it provides efficient electromagnetic interference filtering in compact circuit layouts.

Feature Summary

• Integrated feed-through architecture for direct signal line integration
• High-current handling capability suitable for power and data lines
• Compact surface-mount form factor for dense PCB designs

Applications

• Electromagnetic interference filtering in communication systems
• Noise suppression in high-speed digital signal paths
• Power supply input conditioning for sensitive electronics

Procurement Notes

Verify the complete part number including the E03 suffix to ensure correct feed-through specifications. Confirm that the 50 mA current rating aligns with the target application's operational limits. Check RoHS compliance status and moisture sensitivity levels prior to assembly planning.

Selection Notes

Select this component when integrated filtering is required without additional discrete components. Ensure the 500 VDC rating exceeds the peak circuit voltages. Verify that the 1812 footprint matches the board layout constraints and that the X7R temperature stability meets the environmental requirements.

Part Context

This model belongs to the Knowles Syfer feed-through capacitor series, distinct from standard MLCCs by its internal conductive structure. It combines capacitive decoupling with low-impedance grounding paths. The product line targets applications requiring robust noise attenuation in space-constrained environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative feed-through capacitors based on matching capacitance, voltage, current ratings, and package dimensions.