The HPI1040-R36 Ferrocore is a type of pulse transformers. It is designed for use in high power switching applications, with a rating of 10A at 40V with an 8µH inductance. This transformer has an isolation voltage of 2.5kVrms, a 4.2mm pin spacing, and a profile height of 6.2mm. It is intended for use in applications where the transformer inductance needs to be tightly coupled to the load. This transformer provides a clean and efficient transfer of power between two circuit elements, making it well-suited for high power inductive switching applications such as motor and lighting control, as well as applications that utilize high voltage, high frequency switching.