1806Y0500393MXTE01

Overview

The Knowles Syfer 1806Y0500393MXTE01 is a surface-mount feedthrough capacitor designed for EMI filtering. It features a capacitance of 0.039 µF with a voltage rating of 50 VDC and a tolerance of ±20%. The component utilizes C0G (NP0) dielectric material, ensuring stability across its operating temperature range of -55°C to +125°C. Housed in an 1806 (4516 metric) package measuring 4.5 mm x 1.6 mm x 1.1 mm, it incorporates flexible terminals and a nickel barrier termination. This three-terminal device provides effective noise suppression in compact electronic designs.

Feature Summary

• Three-terminal feedthrough architecture for enhanced high-frequency noise attenuation
• Flexible terminal construction to reduce mechanical stress on the substrate
• Nickel barrier termination structure for reliable solderability and corrosion resistance
• C0G dielectric composition providing stable capacitance characteristics over temperature variations

Applications

• High-frequency signal line filtering in communication equipment
• Power supply input/output decoupling in sensitive analog circuits
• EMI suppression in automotive electronics modules
• Noise reduction in RF front-end assemblies

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm terminal configuration and packaging type. Ensure compatibility with standard reflow soldering profiles for components with flexible terminations. Cross-reference the RoHS compliance status with the latest environmental declarations prior to integration into regulated product lines.

Selection Notes

Select this component when space-constrained designs require superior high-frequency performance compared to standard MLCCs. The three-terminal topology offers lower parasitic inductance than two-terminal alternatives. Consider the 1806 footprint constraints and the requirement for nickel barrier terminations in corrosive environments. Evaluate the 50V DC rating against peak transient voltages in the target application circuit.

Part Context

This part belongs to the Knowles Syfer E01 series of surface-mount EMI filters. The series specializes in three-terminal chip capacitors that combine the benefits of feedthrough technology with SMT assembly. These components are engineered to replace traditional discrete filter networks, saving board space while maintaining signal integrity in dense PCB layouts.

Replacement Considerations

Consult official substitution guides for equivalent three-terminal EMI filters in the 1806 package. Verify that alternative parts match the 0.039 µF capacitance, 50 VDC rating, and C0G dielectric class. Confirm physical dimensions and terminal flexibility requirements before adopting substitutes.