L185XF4S

Overview

The L185XF4S is a surface-mount low-pass RF filter manufactured by Knowles Dielectric Labs. It operates with a 3 dB cutoff frequency of 18.5 GHz and supports frequencies from DC to 18 GHz. The component features a stopband range of 20.5 to 40 GHz and maintains a system impedance of 50 Ohms. It exhibits an insertion loss of 2.2 dB and utilizes SMD/SMT termination for board mounting. The device functions within a temperature range of -55°C to +125°C.

Feature Summary

• Provides effective signal filtering in the radio frequency spectrum
• Designed for surface-mount integration into electronic circuits
• Maintains stable performance across wide industrial temperature ranges

Applications

• Radio frequency signal conditioning systems
• Microwave communication equipment
• Test and measurement instrumentation

Procurement Notes

Verify the specific part number against official manufacturer documentation to ensure compatibility with design requirements. Confirm that the surface-mount package dimensions and thermal specifications align with the target application environment. Review the datasheet for precise electrical characteristics and handling instructions before procurement.

Selection Notes

Select this component when a low-pass filter with an 18.5 GHz cutoff is required for high-frequency applications. Ensure the circuit design accommodates the 50 Ohm impedance and SMD form factor. Evaluate the operating temperature range to confirm suitability for the intended environmental conditions.

Part Context

This component belongs to the surface-mount low-pass filter category produced by Knowles Dielectric Labs. These filters are engineered for precision signal processing in demanding RF environments. The product line emphasizes compact packaging and reliable performance for modern electronic designs requiring high-frequency signal integrity.

Replacement Considerations

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