1812J5000392MJTE03

Overview

The Knowles Syfer 1812J5000392MJTE03 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 3900 pF with a ±20% tolerance and a DC voltage rating of 500 VDC. The component utilizes X7R dielectric material and operates within a temperature range of -55°C to +125°C. Housed in an 1812 (4532 metric) package, it includes three pads for mounting and supports a current rating of 50 mA.

Feature Summary

• Integrates feed-through architecture for effective electromagnetic interference filtering
• Provides high-current handling capability suitable for power line applications
• Utilizes X7R ceramic dielectric for stable performance across operating temperatures

Applications

• High-frequency noise suppression in electronic circuits
• Electromagnetic interference filtering for power lines
• Signal integrity protection in sensitive equipment

Procurement Notes

Verify the specific J suffix designation against official Knowles Syfer documentation to confirm the exact termination and barrier specifications. Ensure the 50 mA current rating aligns with circuit requirements. Confirm RoHS compliance status through the manufacturer's datasheet before integration into regulated assemblies.

Selection Notes

Select this component when integrated EMI filtering is required without additional discrete inductors. The 1812 footprint offers a balance between capacitance density and thermal management. Verify that the 500 VDC rating exceeds the maximum circuit voltage under all operating conditions to ensure reliability.

Part Context

This part belongs to the Knowles Syfer feed-through capacitor series, which combines capacitive filtering with conductive pathways. Unlike standard MLCCs, these components are engineered to handle significant current while suppressing high-frequency noise. They are distinct from general-purpose capacitors due to their specialized three-terminal or feed-through construction.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data.