The MFP1-15R JI part of TT Electronics is a transformer used in power supplies and other power control circuits. It is a one-way transformer designed for use in isolated power supply applications. The transformer features two shielded windings, a single secondary winding, and a primary winding with a 15-ohm resistance. It is designed to operate at a frequency of up to 400 Hz, and its maximum continuous operating temperature is 65°C. Its insulation system meets UL 94V-0 criteria and it has an isolation voltage rating of 500 Vac. This transformer is designed for safety to meet all relevant safety categories.