3FS-312

Power Transformers Overview

The Tamura 3FS-312 is a laminated core power transformer designed for through-hole mounting. It features a single primary winding rated at 115V and dual secondary windings supporting parallel operation at 6.3V with a maximum current of 400mA, or series operation at 12.6V with a maximum current of 200mA. The unit delivers a maximum power output of 2.4VA and provides 2500Vrms isolation voltage. Physical dimensions are 35.56mm in length, 31.00mm in width, and a maximum height of 32.10mm.

Power Transformers Feature Summary

• Laminated core construction for efficient magnetic flux transfer
• Dual secondary windings configurable for parallel or series voltage outputs
• High isolation voltage rating of 2500Vrms between primary and secondary circuits
• Through-hole PC pin termination for secure board installation

Power Transformers Applications

• General purpose AC to DC power supply units
• Industrial control system power modules
• Consumer electronics requiring isolated low-voltage DC rails
• Medical equipment auxiliary power circuits

Power Transformers Procurement Notes

Verify the specific suffix codes against official Tamura documentation to confirm exact electrical tolerances and insulation class ratings. Ensure that the procurement channel provides valid RoHS compliance certificates and material declaration forms as required by regulatory standards. Cross-reference the manufacturer part number with authorized distributor lists to avoid counterfeit components. Confirm that the received units match the specified 2.4VA power rating and physical footprint before integration into production assemblies.

Power Transformers Selection Notes

Select this component when a compact, high-isolation transformer is required for 115V input applications. The dual secondary configuration offers flexibility for different voltage requirements without changing hardware. Consider the 32.10mm height constraint for enclosure design. This model is suitable for designs prioritizing cost-effectiveness and standard through-hole assembly processes over surface-mount constraints.

Power Transformers Part Context

The 3FS-312 belongs to the Tamura 3FS-3xx series of laminated core power transformers. This series is characterized by standardized footprints and robust isolation capabilities. It serves as a fundamental component in linear power supply architectures, providing galvanic isolation between mains voltage and low-voltage circuitry. The series supports various tap configurations to meet diverse international voltage standards.

Power Transformers Replacement Considerations

No direct public substitute part numbers are confirmed in available documentation. Verify compatibility based on pinout, VA rating, and isolation voltage if considering alternatives from other manufacturers.