1206J1000393MJTE03

Overview

The Knowles Syfer 1206J1000393MJTE03 is a feedthrough capacitor designed for surface mount applications. It features a capacitance of 0.039 µF with a DC voltage rating of 100V and a tolerance of ±20%. The component utilizes X7R dielectric material and operates within a temperature range of -55°C to +125°C. Its physical dimensions conform to the 1206 (3216 metric) package, measuring 3.2 mm in length, 1.6 mm in width, and 1.1 mm in height. The device includes three terminals and supports a current rating of 50 mA.

Feature Summary

• Integrates feedthrough filtering capabilities directly into a standard surface-mount footprint
• Provides effective electromagnetic interference suppression through internal capacitive structure
• Utilizes X7R ceramic dielectric for stable performance across specified operating temperatures

Applications

• Electromagnetic interference filtering in compact electronic assemblies
• Signal integrity protection in high-density circuit boards
• Power line conditioning for sensitive low-voltage components

Procurement Notes

Verify the complete part number including suffixes against official manufacturer documentation to ensure correct dielectric type and terminal configuration. Confirm that the 50 mA current rating aligns with specific circuit requirements. Cross-reference datasheet revisions to validate compliance with current environmental standards such as RoHS before finalizing procurement decisions.

Selection Notes

Select this component when integrated feedthrough filtering is required within a constrained 1206 footprint. Ensure the 100V DC rating exceeds maximum circuit voltages. Verify that the X7R temperature coefficient meets operational stability needs. Confirm compatibility with surface mount assembly processes and check terminal availability for PCB layout integration.

Part Context

This component belongs to the Knowles Syfer feedthrough capacitor series, which combines passive filtering functions with standard surface-mount packaging. These devices are engineered to replace traditional discrete filter components, allowing for reduced board space consumption while maintaining signal integrity in dense electronic designs.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in available documentation.