VBF-1945+

Overview

The VBF-1945+ is a coaxial bandpass filter manufactured by Mini-Circuits, designed for RF applications. It features an LTCC internal structure and SMA connectors. The passband covers 1850 to 2040 MHz with a center frequency of 1945 MHz ± 95 MHz. Typical insertion loss is 2.0 dB. The unit operates at 50Ω impedance. Physical dimensions are approximately 1.43 inches in length.

Feature Summary

• Constructed using rugged unibody design integrating RF connectors with the case body
• Utilizes internal LTCC technology for repeatable performance
• Provides good close-in rejection characteristics

Applications

• RF signal filtering in communication systems
• Microwave component integration
• IF stage filtering

Procurement Notes

Verify the specific datasheet version for precise electrical tolerances and mechanical drawings before integration. Confirm connector polarity and mating interface requirements with existing system hardware. Ensure environmental conditions match the component's operational specifications. Cross-reference part numbers to avoid confusion with similar family members.

Selection Notes

Select this component when a narrow bandpass response around 1945 MHz is required. The 50Ω impedance matches standard RF transmission lines. Consider the physical size constraints as it offers a compact coaxial form factor. Evaluate insertion loss specifications against system sensitivity requirements.

Part Context

This component belongs to the Mini-Circuits VBF series of coaxial bandpass filters. These units are characterized by their small size and versatile construction. The series integrates connectors directly into the case body for robust performance in various RF environments.

Replacement Considerations

Check for direct substitutes within the Mini-Circuits VBF series that match the 1850-2040 MHz range. Verify compatibility with existing SMA interfaces. Ensure replacement parts maintain similar insertion loss and rejection profiles.