TCM4-19+

Balun Overview

The Mini-Circuits TCM4-19+ is a surface-mount RF transformer designed for audio and signal applications. It operates within a frequency range of 10 MHz to 1.9 GHz. The component features a single channel configuration with both primary and secondary coil impedances rated at 50 Ohms. It supports a maximum DC current of 30 mA and has a power rating of 250 mW. The device functions reliably within an operating temperature range from -20°C to +85°C. Its physical dimensions are 4.06 mm in length, 3.81 mm in width, and 4.06 mm in height, housed in a compact SMD package.

Balun Feature Summary

• Provides impedance transformation between 50 Ohm primary and secondary circuits
• Supports wideband operation from 10 MHz up to 1.9 GHz
• Designed for surface mount technology integration

Balun Applications

• RF signal path impedance matching
• Audio and signal transformer circuits
• Broadband communication interface balancing

Balun Procurement Notes

Verify the specific datasheet revision and electrical test conditions prior to implementation. Confirm that the 50 Ohm impedance match aligns with system requirements across the full 10 MHz to 1.9 GHz bandwidth. Ensure thermal management accommodates the specified -20°C to +85°C operating range and 250 mW power rating. Validate footprint compatibility with the 4.06 x 3.81 x 4.06 mm package dimensions during PCB layout.

Balun Selection Notes

Select this component when a 50 Ohm to 50 Ohm transformation is required in a surface-mount design. Consider the 1.9 GHz upper frequency limit for high-speed signal integrity. Evaluate the 30 mA DC current limit against circuit biasing needs. Compare physical size constraints against alternative packages if space is limited. Verify RoHS compliance status for environmental regulations.

Balun Part Context

This part belongs to the Mini-Circuits TC series of audio and signal transformers. It shares similar electrical characteristics with models like TC4-19LN+ and TC4-19G2+, which also operate up to 1.9 GHz with 50 Ohm impedances. The TCM4-19+ distinguishes itself through its specific SMD form factor and dimensional profile suitable for dense board layouts.

Balun Replacement Considerations

TC4-19LN+ and TC4-19G2+ offer comparable 50 Ohm performance up to 1.9 GHz but differ in package dimensions. Verify mechanical fit before substitution.