1812Y0500394MJTE03

Overview

The Knowles Syfer 1812Y0500394MJTE03 is a feed-through capacitor designed for surface mount applications. It features a capacitance of 0.39 µF with a voltage rating of 50 VDC and a current rating of 50 mA. The component utilizes an 1812 (4532 metric) package size, measuring 4.5 mm in length, 3.2 mm in width, and 2.5 mm in height. It employs a three-pad configuration to facilitate efficient electromagnetic interference filtering in compact circuit layouts.

Feature Summary

• Integrates feed-through architecture within a standard surface mount footprint
• Provides effective electromagnetic interference suppression for signal lines
• Supports high-current handling capabilities up to fifty milliamperes

Applications

• High-frequency signal line filtering
• Power supply input noise reduction
• Electromagnetic compatibility enhancement in sensitive electronics

Procurement Notes

Verify the specific three-pad soldering requirements during procurement planning. Ensure that the selected PCB layout accommodates the distinct terminal structure required for this feed-through topology. Confirm that the operational current does not exceed the specified fifty milliampere limit to maintain device integrity and performance standards.

Selection Notes

Select this component when space constraints necessitate combining filtering functions with standard SMT assembly processes. It serves as an alternative to traditional through-hole feed-through capacitors where board real estate is limited. Consider its current rating and capacitance value relative to the target frequency range to ensure adequate attenuation characteristics for the intended application.

Part Context

This part belongs to the Knowles Syfer feed-through capacitor series, which merges ceramic dielectric stability with specialized terminal designs. Unlike standard multilayer capacitors, it incorporates internal conductive paths optimized for high-frequency noise dissipation. The product line targets industries requiring robust EMI management without compromising on miniaturization or assembly efficiency.

Replacement Considerations

Direct substitutes must match the 0.39 µF capacitance, 50 VDC rating, and 50 mA current capacity. Verify that any alternative component supports the same three-pad surface mount configuration to ensure mechanical compatibility.