1806J1000393MJTE07

Overview

The Knowles Syfer 1806J1000393MJTE07 is a surface-mount EMI filter capacitor designed for high-frequency noise suppression. It features a 39 nF capacitance with ±20% tolerance and a 100 VDC voltage rating. Constructed with X7R dielectric material, this component operates within a temperature range of -55°C to +125°C. The device utilizes a 1806 (4516 metric) package size, measuring 4.5 mm in length, 1.6 mm in width, and 1.3 mm in height. It employs SMD/SMT termination types and is supplied in tape and reel packaging for automated assembly processes.

Feature Summary

• Three-terminal architecture providing enhanced electromagnetic interference filtering capabilities
• X7R ceramic dielectric ensuring stable performance across wide industrial temperature ranges
• Compact 1806 surface-mount footprint optimized for dense PCB layouts

Applications

• High-speed digital signal line filtering in communication equipment
• Power supply input/output noise suppression in automotive electronics
• EMI mitigation in consumer electronic devices requiring compact form factors

Procurement Notes

Verify the specific suffix configuration against official Knowles Syfer documentation to ensure correct dielectric type and terminal plating specifications. Confirm that the three-terminal EMI filter variant matches the design requirements rather than standard two-terminal capacitors. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring effective common-mode noise attenuation in space-constrained environments. The 1806 package offers a balance between capacitance value and physical size suitable for modern surface-mount technology lines. Ensure the operating voltage remains below the 100 VDC rating and verify thermal management strategies align with the X7R temperature coefficient characteristics for reliable long-term operation.

Part Context

This component belongs to the Knowles Syfer EMI Filter series, specifically engineered for suppressing electromagnetic interference in sensitive electronic systems. The J-series designation typically indicates specific dimensional and electrical tolerances within the broader multilayer ceramic capacitor portfolio. As a specialized passive component, it supports compliance with stringent regulatory standards for electromagnetic compatibility in commercial and industrial applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Evaluate alternative three-terminal EMI filters from the same manufacturer family only if exact electrical parameters and mechanical dimensions match the original design constraints.