B280MB1S

Overview

The B280MB1S is a surface-mount bandpass filter manufactured by Knowles Dielectric Labs, designed for signal conditioning applications at 28 GHz. It features a center frequency of 28.0 GHz with a bandwidth of 3 GHz and an insertion loss of 3.5 dB. The component operates within a temperature range of -55°C to +125°C and utilizes a 50 Ohm impedance. It is available in a 3-SMD, no-lead package configuration.

Feature Summary

• Surface-mount design for board integration
• Optimized for 5G millimeter-wave frequencies
• High-temperature operational capability

Applications

• 5G wireless infrastructure equipment
• Millimeter-wave communication systems
• Signal conditioning modules

Procurement Notes

Verify the specific suffix (e.g., -T) to confirm packaging type, as bulk and reel variants exist. Confirm lead times directly with the manufacturer or authorized distributors, as production cycles may vary. Ensure compatibility with the target PCB footprint for the 3-SMD no-lead package before ordering.

Selection Notes

Select this component when a 28 GHz center frequency with 3 GHz bandwidth is required. The 3.5 dB insertion loss specification should be evaluated against system link budget requirements. Consider the -55°C to +125°C operating range for environmental suitability in industrial or outdoor deployments.

Part Context

This part belongs to the Knowles Dielectric Labs bandpass filter series, specifically engineered for high-frequency RF applications. It shares design characteristics with other models in the B-series, such as the B274MB1S, but is distinctively tuned for the 28 GHz spectrum used in modern wireless standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative filters from the same manufacturer family only if they match the 28 GHz center frequency, 3 GHz bandwidth, and 3-SMD package constraints.