1812J0500333MJTE03

Overview

The Knowles Syfer 1812J0500333MJTE03 is a surface-mount feed-through capacitor with a capacitance of 0.033 µF and a voltage rating of 50 VDC. It utilizes X7R dielectric material and offers a tolerance of ±20%. The component operates within a temperature range of -55°C to +125°C. It features a 1812 (4532 metric) package size with nickel barrier and 100% tin terminations. Designed for high-frequency applications, it supports a current rating of 50 mA.

Feature Summary

• Feed-through architecture providing integrated EMI filtering capabilities
• X7R dielectric material ensuring stable performance across operating temperatures
• Nickel barrier and 100% tin termination structure for reliable soldering

Applications

• High-frequency signal line filtering in electronic circuits
• EMI suppression in compact surface-mount assemblies
• Power distribution networks requiring integrated decoupling and filtering

Procurement Notes

Verify the specific suffix 'E03' against official datasheets to confirm terminal configuration and packaging details. Ensure compatibility with PCB pad layouts designed for feed-through components rather than standard MLCCs. Confirm RoHS compliance status through manufacturer documentation prior to integration.

Selection Notes

Select this component when board space is limited and simultaneous filtering and mounting are required. The feed-through design reduces parasitic inductance compared to discrete capacitors. Verify that the 50 mA current rating meets circuit requirements and that the 1812 footprint aligns with available layout space.

Part Context

This part belongs to the Knowles Syfer 1812J series of feed-through capacitors. Unlike standard multilayer ceramic capacitors, these components integrate a conductive path through the dielectric body. This design allows them to function as both a capacitor and a conductor, offering superior high-frequency noise attenuation in constrained spaces.

Replacement Considerations

Direct substitutes must match the feed-through topology and 1812 footprint. Standard MLCCs like 1812J0500333JXT lack the internal conductive path and cannot replicate the filtering characteristics. Verify pinout and current handling capabilities before considering alternative feed-through models.