B145LB1S

Overview

The B145LB1S is a surface-mount bandpass filter manufactured by Knowles Dielectric Labs. Designed for RF signal conditioning, this component operates at a center frequency of 14,500 MHz with an 8,000 kHz bandwidth. It features a 3.5 dB insertion loss and utilizes a 12-SMD package configuration. The device supports board mounting and is engineered to maintain performance within a standard industrial temperature range.

Feature Summary

• Provides selective frequency filtering in the microwave spectrum
• Utilizes compact surface-mount architecture for automated assembly
• Engineered for stable signal transmission with controlled attenuation

Applications

• Microwave communication systems
• RF front-end modules
• Wireless infrastructure equipment

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with the manufacturer or authorized distributor before procurement. Confirm that the 12-SMD package dimensions align with your PCB footprint requirements. Ensure that the operating temperature range meets your environmental specifications. Cross-reference the part number to distinguish between bulk and reel packaging options if applicable.

Selection Notes

Select this component when a fixed center frequency near 14.5 GHz is required. Consider the 3.5 dB insertion loss against system link budget constraints. Evaluate the physical size of the 12-SMD package against available board space. Compare performance metrics with alternative filters from the same series if tighter bandwidth or lower loss is necessary.

Part Context

This part belongs to the Knowles Dielectric Labs bandpass filter portfolio, which offers various center frequencies and bandwidths for RF applications. The B-series typically denotes ceramic dielectric construction suitable for high-frequency stability. Similar models include B145RE0S and B145LB1S-T, differing primarily in packaging format or specific tuning parameters.

Replacement Considerations

The B145LB1S-T is a documented substitute variant offering identical electrical characteristics but supplied in tape-and-reel packaging for high-volume manufacturing. Verify mechanical compatibility before substitution.