NCS4-521+

Balun Overview

The NCS4-521+ is a surface-mount RF balun transformer manufactured by Mini-Circuits. It operates within a frequency range of 223 MHz to 520 MHz, providing a 1:4 impedance transformation ratio. The device features a 50 Ohm impedance and utilizes an 0805 (2012 Metric) package with six pad terminations. It supports a bandwidth of 297 MHz and functions reliably at minimum operating temperatures of -40°C.

Balun Feature Summary

• Provides balanced-to-unbalanced signal conversion via a 1:4 impedance transformation ratio
• Utilizes LTCC technology for compact surface-mount integration in the 0805 package
• Designed for high-frequency RF applications within the specified operational bandwidth

Balun Applications

• RF signal conditioning circuits
• Balanced antenna interface connections
• Microwave component integration

Balun Procurement Notes

Verify the specific datasheet version and manufacturer documentation to confirm technical specifications and compliance standards. Ensure that the selected component meets the required environmental temperature ranges and impedance matching criteria for the intended circuit design before finalizing procurement decisions.

Balun Selection Notes

Select this component based on its specific 223 MHz to 520 MHz operational range and 1:4 transformation ratio requirements. Consider the 0805 surface-mount package dimensions for PCB layout constraints. Evaluate the -40°C minimum operating temperature limit against the environmental conditions of the target application to ensure reliable performance.

Balun Part Context

This part belongs to the Mini-Circuits NCS4 series of RF transformers. These components are designed for radio frequency and microwave applications, offering signal conditioning capabilities across various frequency bands. The series provides standardized solutions for impedance matching and signal balancing in electronic systems.

Balun Replacement Considerations

Consult official Mini-Circuits documentation for verified substitute part numbers. Cross-reference specifications such as frequency range, impedance ratio, and package type to ensure functional compatibility with existing circuit designs.