TTC-105

Overview

The Tamura TTC-105 is a through-hole audio transformer designed for telecom and signal coupling applications. It features a 600-ohm primary impedance and a 600-ohm secondary impedance with a 1:1 turns ratio. The device operates within a frequency range of 660Hz to 3.5kHz, maintaining an insertion loss specification. It supports a maximum operating current of 90mA DC and provides 1500VRMS isolation voltage for one minute. This component is suitable for data and voice line coupling in telecommunications equipment.

Feature Summary

• Provides galvanic isolation between circuit sections via magnetic coupling
• Maintains signal integrity across specified audio frequency bands
• Supports balanced line interfacing with matched impedances

Applications

• Telecommunications line coupling
• Audio signal transmission
• Data voice interface circuits

Procurement Notes

Verify the specific manufacturer source as availability varies. Some distributors list this item as discontinued while others may still hold stock. Confirm the package type and pin configuration match your PCB footprint requirements before ordering. Ensure the datasheet version aligns with your design specifications regarding insulation and thermal ratings.

Selection Notes

Select this component when a 600-ohm balanced audio interface is required. The 1:1 ratio suits direct line coupling without gain adjustment. Consider the through-hole mounting style for mechanical stability. Verify that the 90mA DC current limit meets your circuit's biasing needs. Check isolation voltage requirements against system safety standards.

Part Context

This part belongs to Tamura's series of audio transformers used in communication systems. These components are engineered for reliable signal transfer in noisy environments. The TTC-105 specifically targets traditional telecom infrastructure where standard 600-ohm impedances are prevalent. It serves as a critical interface element between different stages of audio processing or transmission lines.

Replacement Considerations

Check for direct substitutes like the TTC-105-1 if available. Verify impedance ratios and physical dimensions for compatibility. Ensure replacement parts meet the same isolation and frequency response criteria.