TC1.33-282+

Balun Overview

The TC1.33-282+ is a mini wideband tri-filar RF transformer designed for surface mount applications. It operates within a frequency range of 5 MHz to 2.8 GHz, providing impedance transformation from 50 ohms unbalanced to 50 ohms balanced with a 1:1.3 ratio. The component features a compact 4-SMD flat lead package measuring approximately 3.81 mm x 3.81 mm x 4.06 mm. Key electrical specifications include a maximum insertion loss of 3 dB, a minimum return loss of 13.83 dB, and a phase difference of 6°. It supports a maximum DC current of 30 mA and a power rating of 250 mW, functioning reliably between -40°C and +85°C.

Balun Feature Summary

• Provides precise impedance matching and signal conversion between single-ended and differential RF signals using tri-filar construction.
• Delivers stable performance across a wide bandwidth from 5 MHz to 2.8 GHz with low insertion loss characteristics.
• Utilizes a compact plastic substrate design suitable for aqueous washing and high-density surface mount assembly.

Balun Applications

• RF transmitter and receiver circuits in wireless communication systems
• Differential amplifier circuit interfaces requiring impedance balancing
• RF test equipment signal conditioning

Balun Procurement Notes

Verify the specific suffix designation when ordering, as variants such as TC1.33-282-5+ exist with distinct physical pin configurations or processing requirements. Confirm that the selected variant aligns with the target PCB footprint and manufacturing process constraints. Ensure compliance with RoHS3 standards and check moisture sensitivity levels prior to assembly. Cross-reference official datasheets to validate electrical parameters against system requirements before finalizing procurement.

Balun Selection Notes

Select this component when a compact solution is required for converting single-ended signals to balanced differential signals within the 5 MHz to 2.8 GHz spectrum. The 1:1.3 impedance ratio makes it suitable for interfacing 50-ohm sources with specific balanced loads. Consider the 4-SMD flat lead package for space-constrained designs. Evaluate thermal management needs given the 250 mW power rating and ensure the operating temperature range meets environmental conditions.

Balun Part Context

This device belongs to the Mini-Circuits TC series of RF transformers, which are passive components engineered for high-performance signal integrity. The series utilizes mature LTCC and tri-filar technologies to achieve low temperature drift and stable operation. These components support full signal chain functions including impedance matching and signal conversion, serving as fundamental building blocks for commercial and industrial RF hardware designs.

Balun Replacement Considerations

The TC1.33-282-5+ is a documented alternative variant within the same product family. Verify mechanical compatibility and electrical equivalence before substitution, as suffix differences may indicate variations in package geometry or processing specifications.