DA103JC-R

Overview

The DA103JC-R is a surface-mount audio transformer manufactured by Murata Power Solutions. It features a single-channel configuration with a 1:1 turns ratio, designed for digital audio signal transmission. The component operates within a frequency range of 50 Hz to 60 Hz and offers an inductance specification between 3.2 mH and 8.5 mH. It has a primary coil impedance of 110 Ohms and supports a maximum voltage-time product of 28 Vµs. The device functions reliably across a temperature range of -40°C to +85°C. Physical dimensions are 12.7 mm in length, 9 mm in width, and 6.35 mm in height.

Feature Summary

• Provides isolated signal transmission for digital audio applications with a 1:1 turns ratio.
• Engineered for surface-mount technology (SMD/SMT) integration onto printed circuit boards.
• Maintains stable performance across a wide industrial operating temperature range.

Applications

• Digital audio signal isolation
• Audio interface circuits
• Signal transformer modules

Procurement Notes

Verify the specific datasheet version to confirm exact inductance tolerances and pinout configurations before finalizing designs. Ensure that the surface-mount footprint matches the PCB layout requirements. Confirm RoHS compliance status through official manufacturer documentation. Check for any recent production changes or obsolescence notices directly from Murata Power Solutions.

Selection Notes

Select this component when a surface-mount solution is required for low-frequency audio signal coupling. The 110 Ohm primary impedance should be compatible with the source circuit driving requirements. Consider the physical size constraints of the enclosure, as the package measures 12.7 mm by 9 mm. Verify that the thermal environment stays within the specified -40°C to +85°C operational limits.

Part Context

This part belongs to the DA100J series of audio transformers from Murata Power Solutions. It is categorized under pulse and signal transformers, distinct from power inductors like the 19R103C or 22R103MC found in general catalogs. The series focuses on maintaining signal integrity in audio pathways rather than energy storage.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the official Murata Power Solutions catalog for cross-referencing similar audio transformers with matching SMD footprints and impedance characteristics.