TTC-5003

Overview

The Tamura TTC-5003 is a surface-mount audio transformer designed for data and voice coupling applications. It features a primary impedance of 600 Ohms and a secondary impedance of 320 Ohms with a 1:1 turns ratio. The device operates within a frequency range of 200Hz to 4kHz, offering a minimum insertion loss of 3.20dB and a return loss of at least 18dB across the band. It supports a maximum isolation voltage of 3000VRMS for one minute and functions reliably within an operating temperature range of -20°C to +85°C.

Feature Summary

• Provides galvanic isolation between circuits via electromagnetic coupling
• Optimized for balanced audio and data signal transmission
• Designed for automated surface-mount assembly processes

Applications

• Modem interface circuits
• Voice communication equipment
• Data transmission line balancing

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer confirmation. Ensure the received parts match the specified package type and pin configuration. Check manufacturing date codes against project timelines to avoid obsolescence issues. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Validate electrical parameters against the official datasheet specifications prior to integration.

Selection Notes

Select this component when a 600-ohm primary side matches the source circuit requirements. The 320-ohm secondary impedance suits specific load matching scenarios in telecommunications. Consider the SMD footprint dimensions for PCB layout constraints. Evaluate the thermal performance limits relative to the intended operating environment. Compare insertion loss characteristics against alternative transformers for signal integrity optimization.

Part Context

This component belongs to the TTC series of audio transformers manufactured by Tamura Corporation. These devices are specialized for telecommunications and modem applications requiring high isolation and signal fidelity. The series includes various impedance configurations tailored for different network standards. The TTC-5003 specifically addresses interfaces needing asymmetric impedance transformation between primary and secondary sides.

Replacement Considerations

Publicly confirmed substitute part numbers for the TTC-5003 are not available in the provided documentation. Verify compatibility with existing designs before considering alternative components from other manufacturers.