TTC-5019

Overview

The Tamura TTC-5019 is a data and voice coupling transformer designed for telecommunications applications. It features a primary impedance of 600 ohms and a secondary impedance of 260 ohms, providing a 1:1 turns ratio. The device operates within a frequency range of 200Hz to 4kHz with a frequency response of ±2.5dB. It offers an insertion loss of 4dB and supports a maximum current of 50mA. Electrical isolation is rated at 1875VRMS for one second. The component utilizes PC pin termination for through-hole mounting.

Feature Summary

• Provides galvanic isolation between voice and data lines in telecommunications circuits
• Designed for efficient signal coupling across standard telephone line impedances
• Supports high voltage isolation requirements for safety compliance

Applications

• Voice modem line coupling
• Data transmission interface isolation
• Telecommunications equipment signal conditioning

Procurement Notes

Verify the specific ordering suffix against official Tamura documentation to ensure correct impedance and isolation ratings. Confirm that the procurement source provides genuine components with traceable manufacturing dates. Check for any obsolete status notifications from the manufacturer before placing orders. Ensure compatibility with existing PCB layouts regarding PC pin spacing and mounting requirements.

Selection Notes

Select this component when interfacing 600-ohm telephony lines with 260-ohm secondary circuits requiring moderate isolation. Consider the 200Hz to 4kHz bandwidth for standard voice frequency applications. Evaluate the 1875VRMS isolation rating against system safety standards. Compare insertion loss characteristics with alternative models if lower signal attenuation is required for long-distance transmission.

Part Context

The TTC series represents Tamura's lineup of audio and signal transformers for telecom infrastructure. These components facilitate signal transfer while maintaining electrical separation between network segments. The TTC-5019 specifically addresses legacy and modern hybrid systems requiring robust coupling between balanced voice lines and unbalanced data interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference availability directly with Tamura Corporation or authorized distributors.