VLF-1450+

Overview

The VLF-1450+ is a coaxial low-pass filter from the Mini-Circuits VLF series, designed for signal conditioning applications. It operates within a frequency range of DC to 1450 MHz and features a 50-ohm impedance. The component utilizes SMA connectors for inline installation. Key electrical specifications include an insertion loss of 0.79 dB and a voltage standing wave ratio (VSWR) of 1.2:1. It provides 20 dB rejection at 2025 MHz. The unit is housed in a cylindrical package with dimensions of 0.410 inches in diameter by 1.430 inches in length.

Feature Summary

• LTCC construction for stable RF performance
• SMA connector interface for direct integration
• Compact cylindrical form factor

Applications

• RF signal conditioning circuits
• Harmonic suppression in communication systems
• Test and measurement equipment front ends

Procurement Notes

Verify the specific datasheet revision when sourcing, as performance curves may vary between manufacturing batches. Confirm that the SMA connector type matches the system requirements. Ensure the operating temperature range aligns with the intended environment, as the component supports -55°C to +100°C. Cross-reference the part number suffix to confirm RoHS compliance status if required by the assembly process.

Selection Notes

Select this component when a low-pass filter with a cutoff near 1.45 GHz is required. The 50-ohm impedance makes it suitable for standard RF systems. Consider the physical dimensions for space-constrained designs. Evaluate the insertion loss and rejection characteristics against system noise floor and interference requirements. Verify compatibility with existing SMA infrastructure.

Part Context

This component belongs to the Mini-Circuits VLF series of coaxial low-pass filters. These components are engineered for high reliability in RF and microwave applications. The series offers various cutoff frequencies while maintaining consistent impedance and connector types. The VLF-1450+ represents a specific point in this lineup optimized for frequencies up to 1450 MHz.

Replacement Considerations

Check Mini-Circuits documentation for direct substitutes within the VLF series. Verify that alternative parts match the 50-ohm impedance and SMA interface. Ensure cutoff frequency and rejection specs meet design constraints before substitution.

FAQ

What is the cutoff frequency of the VLF-1450+?

The cutoff frequency is specified at 1.825 GHz, with operational use up to 1450 MHz.

Does the VLF-1450+ support surface mount installation?

No, it is an inline module with SMA connectors designed for coaxial connection rather than surface mount.