1206Y1000473MJTE03

Overview

The Knowles Syfer 1206Y1000473MJTE03 is a feed-through ceramic capacitor designed for high-frequency noise suppression. It features a capacitance of 0.047 µF with a ±20% tolerance and a DC voltage rating of 100V. The component utilizes C0G/NP0 dielectric material to ensure stable performance across a temperature range of -55°C to +125°C. Housed in a standard 1206 (3216 metric) surface-mount package, it integrates a built-in 50 mA fuse element within the central conductor structure. This design provides both capacitive filtering and overcurrent protection in a single compact footprint.

Feature Summary

• Integrated feed-through architecture combining capacitive filtering with a built-in current-limiting fuse element for enhanced circuit protection.
• Utilizes C0G/NP0 dielectric material to maintain consistent capacitance stability under varying thermal conditions and electrical loads.
• Constructed with flexible termination technology to withstand mechanical stress from board bending and thermal cycling without cracking.

Applications

• High-frequency noise suppression in sensitive RF signal lines
• Power distribution networks requiring combined filtering and overcurrent protection
• Automotive electronics systems subject to strict reliability standards

Procurement Notes

Verify the specific suffix codes against official manufacturer documentation to confirm exact tolerance and termination specifications. Ensure compatibility with PCB pad layouts designed for feed-through components rather than standard MLCCs. Confirm that the integrated 50 mA fuse rating aligns with the target circuit's operational current requirements before integration.

Selection Notes

Select this component when space constraints prevent using separate filter capacitors and fuses. The 1206 form factor allows for dense assembly while maintaining high-voltage isolation capabilities. Consider the trade-off between the 50 mA fuse limit and the required circuit current to avoid unintended open-circuit failures during normal operation or transient events.

Part Context

This part belongs to the Knowles Syfer feed-through capacitor series, which merges passive filtering with protective functions. Unlike standard multilayer ceramic capacitors, these devices incorporate a conductive central pin that acts as a fuse. This specialization targets applications demanding robust EMI/RFI attenuation alongside intrinsic safety features in compact electronic assemblies.

Replacement Considerations

Direct substitutes must match the 0.047 µF capacitance, 100V rating, and 1206 feed-through form factor. Verify that alternative parts offer comparable 50 mA fuse characteristics and C0G dielectric stability. Standard MLCC replacements will lack the integrated overcurrent protection feature.