1206J0500122MJTE03

Overview

The Knowles Syfer 1206J0500122MJTE03 is a surface-mount X2Y integrated EMI filter capacitor housed in a 1206 (3216 metric) package. It features a capacitance of 1.2 nF with a tolerance of ±20% and a DC voltage rating of 50 VDC. The component utilizes an X7R dielectric material, ensuring stable performance across an operating temperature range from -55°C to +125°C. Designed for high-frequency noise suppression, it incorporates three terminals within a compact footprint to provide efficient electromagnetic interference filtering in space-constrained electronic assemblies.

Feature Summary

• Integrates three-terminal X2Y architecture for enhanced common-mode noise attenuation
• Utilizes X7R dielectric for reliable capacitance stability under varying thermal conditions
• Employs nickel barrier and 100% tin terminations for robust solderability

Applications

• High-speed digital signal line filtering
• Power supply input/output decoupling
• RF circuit noise suppression

Procurement Notes

Verify the specific suffix 'MJTE03' against official Knowles Syfer documentation to confirm terminal configuration and termination plating specifications. Ensure that the selected variant aligns with the required PCB land pattern for three-terminal devices. Cross-reference the datasheet for reflow soldering profiles to maintain joint integrity during assembly processes.

Selection Notes

Select this component when space constraints preclude discrete filter networks but effective EMI suppression is critical. The 1206 form factor offers a balance between current handling capability and board area efficiency. Consider the X7R temperature characteristics relative to the application's thermal environment to ensure consistent filtering performance throughout the operational lifecycle.

Part Context

This part belongs to the Knowles Syfer X2Y IPC-E03 series, which specializes in integrated surface-mount EMI filters. The series combines the functions of capacitors and resistors into a single passive device, simplifying circuit design by reducing component count and parasitic inductance associated with traditional multi-component filter topologies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.