L157XF3W

Overview

The L157XF3W is a low-pass RF filter manufactured by Knowles Dielectric Labs. It features a 3 dB cutoff frequency of 15.7 GHz and operates with a nominal impedance of 50 Ohms. The component utilizes an SMD/SMT termination style for board mounting. It is designed to function within a temperature range of -55°C to +125°C. This wirebond filter is part of the Lowpass Filters series, intended for high-frequency signal conditioning applications requiring precise attenuation above the cutoff point.

Feature Summary

• Provides low-pass filtering characteristics with a defined 15.7 GHz cutoff frequency
• Utilizes wirebond construction for high-frequency performance
• Supports surface mount installation on printed circuit boards

Applications

• High-frequency signal conditioning in RF systems
• Wirebond interconnect applications requiring low-pass filtering
• Electronic equipment operating within extreme temperature environments

Procurement Notes

Verify the specific datasheet version for the L157XF3W to confirm exact insertion loss values and physical dimensions prior to integration. Ensure compatibility with 50 Ohm system impedance. Confirm that the SMD/SMT termination style matches the target PCB footprint design. Check for any RoHS compliance documentation if required by the manufacturing facility standards.

Selection Notes

Select this component when a fixed 15.7 GHz cutoff frequency is required for low-pass filtering. The 50 Ohm impedance rating must match the source and load impedances in the circuit. Consider the -55°C to +125°C operating range for environmental suitability. Verify that the wirebond package type is compatible with the assembly process used in the final product design.

Part Context

This component belongs to the Knowles Dielectric Labs low-pass filter series. It is related to other models such as the L117XH4W-T and L157XF3W-T, which share similar wirebond construction and low-pass functionality but may differ in cutoff frequencies or packaging formats. These filters are designed for specialized RF applications requiring compact, high-performance signal conditioning.

Replacement Considerations

The L157XF3W-T is a tape-and-reel variant of the same filter technology. Verify if the reel packaging meets production needs compared to bulk units. No other direct substitute part numbers are confirmed in public documentation.