1806J0250394MXTE01

Overview

The Knowles Syfer 1806J0250394MXTE01 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 0.39 µF with a ±20% tolerance and an X7R dielectric material. The component supports a maximum DC voltage rating of 25 VDC and handles a continuous current of 300 mA. It utilizes a standard EIA 1806 (4.5 mm x 1.6 mm) package size with three terminals, including a center pin for direct connection to ground planes.

Feature Summary

• Integrates a feed-through architecture to provide effective electromagnetic interference filtering within a compact footprint.
• Utilizes X7R ceramic dielectric to maintain stable capacitance characteristics across the specified operating temperature range.
• Features a three-terminal design that facilitates low-inductance grounding through the central terminal.

Applications

• High-speed digital signal line filtering
• Power supply input/output decoupling
• General-purpose EMI suppression in compact electronics

Procurement Notes

Verify the specific termination finish and RoHS compliance status against the official manufacturer datasheet prior to integration. Confirm that the 300 mA current rating aligns with the thermal management capabilities of the target PCB layout. Ensure the 1806 package dimensions are compatible with the designated assembly footprints.

Selection Notes

Select this component when a low-profile, three-terminal solution is required for noise attenuation in space-constrained designs. The X7R dielectric offers a balance of capacitance density and stability suitable for general applications. Consider the 25 VDC rating to ensure adequate voltage headroom for the specific circuit environment.

Part Context

This part belongs to the Knowles Syfer 1806 series of feed-through capacitors. These components are engineered to replace traditional discrete filter arrangements by combining capacitance and grounding in a single surface-mount device. The series is widely used in modern electronics where minimizing parasitic inductance is critical for performance.

Replacement Considerations

Consult official distributor catalogs for verified substitute part numbers from the same manufacturer family. Cross-referencing requires matching the 1806 package, 0.39 µF capacitance, 25 VDC rating, and three-terminal feed-through topology to ensure functional equivalence.