B285LB2S

Overview

The B285LB2S is a surface-mount bandpass filter manufactured by Knowles Dielectric Labs, designed for microwave applications. It operates at a center frequency of 28.5 GHz with a bandwidth of 2 GHz, covering the range from 27.5 to 29.5 GHz. The component features a 50 Ohm impedance and an insertion loss of less than 3.5 dB. It utilizes a 3-SMD, no-lead package suitable for board mounting.

Feature Summary

• High-performance signal conditioning for microwave frequencies
• Surface-mount construction for automated assembly
• Optimized for 5G communication systems

Applications

• 5G wireless infrastructure
• Microwave communication links
• RF front-end modules

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Knowles Dielectric Labs or authorized distributors before integration. Confirm that the 3-SMD no-lead package dimensions align with your PCB footprint design. Ensure supply chain stability as availability may vary by region.

Selection Notes

Select this component when a 28.5 GHz center frequency and 2 GHz bandwidth are required for 5G applications. The low insertion loss of under 3.5 dB supports efficient signal transmission. The surface-mount form factor facilitates compact circuit board designs in high-frequency environments.

Part Context

This part belongs to the Knowles Dielectric Labs SMD Bandpass Filter series, which provides high-performance 50 Ohm filters for microwave applications. The brand specializes in RF and microwave filtering solutions, including custom ceramic filters, serving various industrial and communication sectors.

Replacement Considerations

The B274MB1S is a related bandpass filter from the same manufacturer operating at 28 GHz with a 3 GHz bandwidth. Verify if the slight frequency shift and bandwidth difference meet system requirements before substitution.