1206J2000121MCTE03

Overview

The Knowles Syfer 1206J2000121MCTE03 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 120 pF with a tolerance of ±20%, rated for a DC voltage of 200V and a continuous current of 50 mA. Utilizing C0G (NP0) dielectric, it ensures stable performance across an operating temperature range of -55°C to +125°C. The component is housed in a standard 1206 (3216 metric) package, providing a compact solution for integrated circuit decoupling and signal line filtering applications.

Feature Summary

• Integrated feed-through architecture combining capacitive filtering with series current handling capability
• C0G/NP0 dielectric material provides minimal capacitance variation over temperature and voltage changes
• Surface-mount construction facilitates automated assembly and space-constrained PCB layouts

Applications

• High-speed digital signal line filtering
• Power supply decoupling for sensitive ICs
• EMI suppression in RF circuits

Procurement Notes

Verify the specific suffix 'E03' against the manufacturer's latest datasheet to confirm terminal configuration and termination material specifications. Ensure the selected variant matches the required 50 mA current rating and 200 VDC withstand voltage for the target application environment. Cross-reference the package dimensions with the PCB footprint library to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when both shunt capacitance and series current carrying capacity are required within a single surface-mount device. The C0G dielectric is optimal for applications demanding high stability and low loss at high frequencies. Evaluate the 1206 package size against available board real estate and ensure the 50 mA rating exceeds the maximum expected signal or ripple current to prevent thermal degradation.

Part Context

This part belongs to the Knowles Syfer MLCC family, specifically engineered as a feed-through type rather than a standard parallel-plate capacitor. The '1206J' prefix indicates the 1206 case size and X7R/C0G class designation, while the unique suffix distinguishes its internal feed-through structure. This design integrates the capacitor element directly into the signal path, offering superior high-frequency attenuation compared to discrete components.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify electrical equivalence carefully if considering alternative manufacturers, particularly regarding the 50 mA current rating and feed-through impedance characteristics which differ from standard MLCCs.