ATB3225-75032CT

Balun Overview

The TDK ATB3225-75032CT is a surface-mount balun transformer designed for RF signal conversion. It operates within a frequency range of 5MHz to 100MHz, providing an impedance transformation ratio of 3:2 between unbalanced and balanced ports. The device exhibits a phase difference of 180° ±10° and maintains a maximum insertion loss of 2.0dB. Packaged in a compact 3.2 x 2.5 x 2.3mm SMD footprint, it supports an operating temperature range from -25°C to 85°C.

Balun Feature Summary

• Converts single-ended signals to differential signals with precise 180-degree phase balance
• Provides 3:2 impedance matching for efficient RF power transfer
• Compact surface-mount design suitable for space-constrained PCB layouts

Balun Applications

• RF front-end modules in wireless communication devices
• Antenna interface circuits requiring balanced-to-unbalanced conversion
• Signal processing stages in consumer electronics operating at VHF/UHF frequencies

Balun Procurement Notes

Verify the specific ordering suffix (e.g., CT or T001) against the manufacturer's official datasheet to ensure correct packaging configuration and reel specifications. Confirm that the component meets the required RoHS compliance standards for your target market. Cross-reference the part number with authorized distributors to avoid counterfeit components, as minor suffix variations may indicate different tape-and-reel quantities or handling instructions.

Balun Selection Notes

Select this component when a 3:2 impedance ratio is specifically required rather than standard 1:1 configurations. Ensure the application frequency falls strictly within the 5MHz to 100MHz operational window to maintain specified insertion loss and phase accuracy. Consider the 1210 package dimensions for PCB footprint compatibility. Evaluate thermal management requirements given the -25°C to 85°C operating range for industrial or automotive environments.

Balun Part Context

This balun belongs to TDK's ATB series of audio and signal transformers, optimized for high-frequency applications. The 3225 code denotes the specific 3.2mm x 2.5mm case size, while the suffix indicates the internal winding configuration for the 3:2 ratio. It serves as a passive RF component distinct from active ICs, focusing purely on electromagnetic signal conversion without external power.

Balun Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative manufacturers, as impedance ratios and phase characteristics must match precisely.