TTC-5021

Overview

The Tamura TTC-5021 is a surface-mount modem transformer designed for data and voice coupling applications. It features a primary impedance of 600 ohms and a secondary impedance of 287 ohms, facilitating specific line matching requirements in telecommunications equipment. The component supports a current rating of 65mA and operates within a frequency range of 200Hz to 4kHz. Key electrical specifications include an insertion loss of 3.85dB maximum at 1kHz and a common mode rejection ratio of -82dB. The device provides 1875VRMS isolation voltage for one second and utilizes PC pin termination for board mounting.

Feature Summary

• Surface-mount construction for automated assembly processes
• Impedance matching between 600-ohm source and 287-ohm load
• High common mode rejection for noise suppression
• PC pin termination style

Applications

• Modem interface circuits
• Data communication equipment
• Voice signal coupling networks
• Telecommunications terminal adapters

Procurement Notes

Verify the exact suffix code against the manufacturer's latest datasheet to confirm impedance ratios and termination styles. Ensure compatibility with PCB footprint dimensions and reflow soldering profiles specified in the official documentation. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a 600:287 ohm impedance transformation is required for modem or voice line interfaces. Consider the surface-mount package type and PC pin termination for manufacturing constraints. Evaluate the insertion loss and CMRR specifications against system noise immunity requirements before integration into the design.

Part Context

The TTC series by Tamura Corporation comprises high-quality audio and signal transformers optimized for maximum power transfer during impedance matching operations. These components are widely used in telecommunications infrastructure to ensure signal integrity between different impedance domains in data and voice transmission systems.

Replacement Considerations

Direct substitutes may include other Tamura models within the TTC series such as the TTC-5020 or TTC-5023, provided their impedance ratios and physical footprints match the design requirements. Verify electrical parameters carefully before substitution.

FAQ

What is the primary-to-secondary impedance ratio of the TTC-5021?

The TTC-5021 has a primary impedance of 600 ohms and a secondary impedance of 287 ohms.

Does the TTC-5021 support surface-mount technology?

Yes, the TTC-5021 is designed with a surface-mount (SMD) configuration using PC pin termination.