TC4-19X+

Balun Overview

The TC4-19X+ is a surface-mount RF transformer manufactured by Mini-Circuits, designed for operation within the frequency range of 10 MHz to 1.9 GHz. It features a 1:4 impedance ratio with both primary and secondary coils rated at 50 Ohms. The component supports a maximum DC current of 30 mA and has a power rating of 250 mW. It operates reliably between -20°C and +85°C. The device utilizes an SMD/SMT termination type and is housed in a compact package measuring 3.81 mm x 3.81 mm x 4.06 mm.

Balun Feature Summary

• Incorporates Top Hat feature to facilitate faster pick-and-place assembly processes
• Provides visual identification orientation through dedicated marking dot
• Delivers balanced-to-unbalanced signal conversion via 1:4 core and wire architecture

Balun Applications

• RF signal balancing and unbalancing circuits
• High-frequency communication system interfaces
• Microwave component integration requiring surface mount topology

Balun Procurement Notes

Verify the specific part number suffix against official Mini-Circuits documentation to confirm the inclusion of the Top Hat feature and associated mechanical dimensions. Ensure that the selected variant matches the required impedance ratio and frequency specifications for the intended application design.

Balun Selection Notes

Select this component when a 1:4 impedance transformation is required within the 10 MHz to 1.9 GHz band. Consider the physical height constraints due to the Top Hat structure and verify compatibility with automated surface mount assembly equipment capabilities.

Balun Part Context

This model belongs to the TC4 series of audio and signal transformers from Mini-Circuits. It represents an upgraded version of the standard TC4-19+, distinguished primarily by the addition of the Top Hat feature which enhances manufacturing efficiency and visual alignment during placement.

Balun Replacement Considerations

The TC4-19+ serves as the base model without the Top Hat feature. Verify mechanical height differences and assembly process requirements before substituting between these variants.