DA103C

Overview

The DA103C is a digital audio pulse transformer manufactured by Murata Power Solutions Inc. Designed for signal transmission, it features a 1:1 turns ratio and operates within a frequency range of 50 Hz to 60 Hz. The component utilizes a through-hole mounting style with an SMD/SMT-compatible lead configuration. Key electrical specifications include an inductance range of 4 mH to 7.75 mH and a primary coil impedance of 110 Ohms. It provides an insulation voltage of 2 kV and functions within a temperature range of 0°C to +70°C. The unit is shielded and housed in a single-channel package.

Feature Summary

• Designed specifically for digital audio data transmission applications
• Improves balance between transmitter and receiver circuits
• Features shielded construction to minimize interference

Applications

• Digital audio data transmission systems
• Audio transmitter circuit interfaces
• Receiver circuit balancing networks

Procurement Notes

Verify the specific datasheet version and manufacturer documentation before integration, as component specifications may vary. Confirm that the operating temperature range and insulation requirements align with your system design. Ensure compatibility with the intended PCB layout and mounting constraints. Check for any end-of-life or not-recommended-for-new-designations status directly from the supplier.

Selection Notes

Select this component when a dedicated digital audio pulse transformer with a 1:1 ratio is required. Consider the 110 Ohm primary impedance and 2 kV insulation voltage for safety isolation needs. Evaluate the physical dimensions and through-hole mounting style against available board space. Verify that the 50 Hz to 60 Hz frequency response meets the specific audio signal bandwidth requirements.

Part Context

The DA103C belongs to the audio and signal transformer category from Murata Power Solutions. It is distinct from their power inductor series, such as the 13R103C or 22R103MC, which serve different power management functions. This part is specifically engineered for low-voltage signal integrity in audio equipment rather than energy storage or filtering.

Replacement Considerations

Murata suggests the DA103JC-R as an alternate option. Verify if this substitute matches the exact inductance and impedance requirements of the original design before implementation.