1806J1000681MCTE01

Overview

The Knowles Syfer 1806J1000681MCTE01 is a three-terminal EMI filter capacitor in an 1806 (4516 metric) surface-mount package. It features a C0G/NP0 dielectric with a capacitance of 680 pF and a tolerance of ±20%. The component has a DC voltage rating of 100 VDC and operates within a temperature range of -55°C to +125°C. Termination consists of nickel barrier with 100% tin plating.

Feature Summary

• Three-terminal architecture designed for effective electromagnetic interference suppression
• C0G/NP0 dielectric material ensures stable capacitance characteristics across varying conditions
• Nickel barrier termination structure provides reliable solderability and corrosion resistance

Applications

• High-frequency signal line filtering in electronic circuits
• Power supply input/output noise reduction
• EMI suppression in sensitive analog or digital communication interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm terminal configuration and packaging details. Ensure the selected variant matches the required three-terminal EMI filter specification rather than standard two-terminal MLCCs. Cross-reference the Mouser part number 843-1806J1000681MC1 for accurate sourcing information.

Selection Notes

Select this component when high-frequency noise attenuation is required in space-constrained designs. The 1806 footprint allows for higher capacitance values compared to smaller packages while maintaining low parasitic inductance due to the three-terminal design. Confirm that the 100V DC rating meets the circuit's maximum operating voltage requirements.

Part Context

This component belongs to the Knowles Syfer E01 series of feed-through capacitors. These devices are engineered specifically for EMI filtering applications, offering superior performance over conventional MLCCs by providing a direct ground path for high-frequency noise. The series utilizes robust ceramic construction suitable for demanding industrial environments.

Replacement Considerations

Direct substitutes must match the 1806 footprint, 680 pF capacitance, 100V rating, and three-terminal EMI filter topology. Verify compatibility of termination materials and thermal characteristics before substitution.