HFCU-243+

Overview

The HFCU-243+ is a miniature low-temperature co-fired ceramic (LTCC) high-pass filter designed for surface-mount applications. It features an 1812 (4532 Metric) footprint and operates with a 50 Ohm impedance. The component provides a passband from 25 to 40 GHz, offering a bandwidth of 15 GHz. Typical insertion loss is 2.6 dB, with a maximum of 3.2 dB. Stopband rejection typically reaches 51 dB, and passband return loss is approximately 16 dB. The device supports operating temperatures between -55°C and +125°C.

Feature Summary

• Miniature LTCC construction for compact surface-mount integration
• High stopband rejection capability for effective signal isolation
• Wide operational temperature range suitable for demanding environments

Applications

• RF front-end filtering in microwave communication systems
• Signal conditioning in high-frequency test and measurement equipment
• Integration into upconverter assemblies requiring specific frequency bandpass characteristics

Procurement Notes

Verify the specific datasheet version and ordering suffixes when sourcing. Confirm that the LTCC package type matches the required PCB layout constraints. Ensure that the thermal specifications align with the intended operating environment limits. Cross-reference impedance values to guarantee system compatibility. Validate performance graphs against current design requirements before finalizing procurement decisions.

Selection Notes

Select this component when a high-pass response starting at 25 GHz is required within a constrained physical space. The 1812 footprint allows for dense circuit board layouts compared to larger filter technologies. Consider the typical insertion loss and return loss metrics for signal integrity analysis. Evaluate the stopband rejection performance to ensure adequate attenuation of lower-frequency interference signals in the target application.

Part Context

This part belongs to Mini-Circuits' HFCU series of LTCC high-pass filters. These components are engineered for reliability and consistent performance in RF and microwave circuits. The series utilizes low-temperature co-fired ceramic technology to achieve stable electrical characteristics across varying environmental conditions while maintaining a small physical profile.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for potential alternatives or updated model equivalents.