HCTSM80102AAL-E1 is an automotive-grade isolation transformer designed for high-voltage power supply applications, featuring a toroid core for high coupling and low radiation. The transformer provides reinforced insulation rated for 800 Vrms and 1000 Vpeak working voltage, with a primary inductance of 250 µH at 100 kHz and 1 V, and a turns ratio of 1:1. It exhibits low leakage inductance of 0.8 µH maximum and minimal DC resistance (0.30 O primary, 0.20 O secondary), ensuring efficient power transfer with minimal losses. The device is AEC-Q200 compliant, RoHS compliant, and UL 62368-1 recognized, making it suitable for isolation power supplies using TI SN6501, SN6505B, and Nexperia NXF6501-Q100 controllers in automotive and industrial applications requiring high clearance and creepage distance.