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Product Detailed Parameters
- Description：B121MB4S-T
- Series：-
- Mfr：Knowles Dielectric Labs
- Package：Tape & Reel (TR)
- Frequency：12GHz Center
- Bandwidth：1.5GHz
- Filter Type：Band Pass
- Ripple：-
- Insertion Loss：2.5dB
- Mounting Type：-
- Package / Case：-
- Size / Dimension：-
- Height (Max)：-
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Overview
The B121MB4S-T is a surface-mount bandpass filter manufactured by Knowles Dielectric Labs, designed for microwave signal conditioning applications. It operates with a center frequency of 12.1 GHz and maintains a standard 50 Ohm impedance. The component utilizes SMD/SMT termination types for PCB mounting and functions within a temperature range of -55°C to +125°C. Packaged in reels, this device provides high-performance filtering characteristics suitable for demanding RF environments.
Feature Summary
- Surface-mount construction optimized for automated PCB assembly processes
- High-performance filtering capabilities tailored for microwave frequency bands
- Standardized 50 Ohm impedance matching for seamless RF system integration
Applications
- Microwave communication systems requiring precise frequency selection
- RF front-end modules in wireless infrastructure equipment
- Signal conditioning circuits in satellite navigation receivers
Procurement Notes
Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with existing PCB footprints and reflow soldering profiles. Confirm availability status through authorized distributors as supply conditions may vary. Cross-reference part numbers carefully to avoid substitution errors in critical RF designs.
Selection Notes
Select this component when a fixed 12.1 GHz center frequency is required for microwave applications. Consider the surface-mount package size for space-constrained designs. Evaluate thermal performance requirements against the specified operating temperature range. Ensure the 50 Ohm impedance aligns with the surrounding circuit topology for optimal signal transmission.
Part Context
This component belongs to the Knowles Dielectric Labs surface-mount bandpass filter series. These filters are engineered for high-reliability microwave applications. The product line emphasizes compact form factors and stable electrical performance across wide temperature ranges. They serve as essential passive components in modern RF signal processing chains.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material.
