3FD-420

Power Transformers Overview

The Tamura 3FD-420 is a laminated core power transformer designed for through-hole mounting. It features dual primary windings supporting 115V and 230V inputs at 60Hz. The unit has a 6VA power rating with a maximum output current of 300mA in series configuration or 600mA in parallel. Secondary outputs are configurable as 10V (parallel) or 20V (series). Dimensions are 41.50mm L x 34.83mm W x 34.55mm H, utilizing PC pin termination.

Power Transformers Feature Summary

• Three-flange bobbin construction enables low capacitive coupling
• Hi-Pot insulation rating of 2500Vrms ensures electrical safety
• Dual primary and secondary windings provide flexible voltage configuration

Power Transformers Applications

• General purpose AC to DC power supply circuits
• Industrial control equipment requiring isolated power
• Consumer electronics mains-powered devices

Power Transformers Procurement Notes

Verify the specific suffix code against official Tamura documentation to confirm exact winding configurations and insulation class ratings. Ensure the procurement specification matches the required through-hole footprint dimensions of 41.50mm by 34.83mm. Confirm that the 6VA power rating aligns with the load requirements of the target application circuit before finalizing orders.

Power Transformers Selection Notes

Select this component when a compact, high-isolation transformer is needed for mains-powered applications. The dual-winding design allows adaptation to both 115V and 230V input standards without changing hardware. Consider the physical size constraints carefully, as the three-flange bobbin structure requires adequate clearance on the PCB for proper mounting and heat dissipation during continuous operation.

Power Transformers Part Context

This model belongs to the Tamura Microtran PSD4-20 series, which focuses on efficient power transformation for space-constrained electronic assemblies. The 3FD-420 variant specifically addresses standard industrial voltage requirements while maintaining strict isolation standards. It serves as a critical interface between mains electricity and sensitive downstream circuitry.

Power Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing PCB footprints and thermal management requirements if considering alternative manufacturers. Ensure any replacement maintains the 2500Vrms Hi-Pot rating and similar physical dimensions.