77207C

Overview

The Murata Power Solutions 77207C is a through-hole pulse transformer from the 772 series, designed for medium power applications. It features a 1:1 turns ratio and an inductance of 16.3 mH. The device supports an ET value of 482 Vµs and operates with a primary DC resistance of 3.5 Ohms and secondary DC resistance of 3.4 Ohms. It provides 2500 Vrms isolation and has a parasitic capacitance of 65 pF.

Feature Summary

• Encapsulated SCR and Triac trigger transformer design
• High voltage isolation capability for gate drive circuits
• Through-hole mounting for robust mechanical integration

Applications

• Thyristor firing circuits
• Triac triggering systems
• Switch mode power supply gate drives

Procurement Notes

Verify component authenticity as this part may be obsolete or subject to tariff regulations depending on shipping destination. Confirm datasheet revisions and specific manufacturing lot details before procurement to ensure compliance with current industrial standards.

Selection Notes

Select this component for applications requiring isolated pulse transmission in thyristor or triac control loops. Ensure the required ET value and isolation voltage meet circuit specifications. Consider availability constraints due to potential obsolescence status when planning long-term production runs.

Part Context

Part of the 772 series pulse transformers intended for medium power switch mode power supplies. Designed specifically for encapsulated SCR and Triac trigger applications, providing reliable signal isolation between control logic and power switching elements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and electrical parameters if sourcing alternative components.