Coilcraft, Inc. ZC1905-BE Flyback Transformers for STMicroelectronics STEVAL-A6986IV3 ZC1905-BE ZC1905-BED

The ZC1905-BE is a flyback transformer optimized for use with STMicroelectronics' STEVAL-A6986IV3 in an isobuck-boost topology with up to 28 V input. It is AEC-Q200 qualified, RoHS compliant, and halogen free, with a ferrite core and tin-silver-copper over tin over nickel over phos bronze terminations. The component weighs 5.1 to 5.3 g and operates reliably from -40°C to +125°C ambient temperature, with a maximum part temperature of +165°C. It features 1500 Vrms isolation between primary and secondary windings, a primary inductance of 20 µH at 500 kHz with 0 A DC, and a saturation current of 4.8 A. The turns ratio is 1:2.69:2.69:2.69:2.69, with four secondary outputs providing 30 V at 0.10 A or 0.25 A. The part is packaged in 13" tape and reel with 200 units per reel, and supports three reflow cycles at 260°C. MSL is 1, indicating unlimited floor life at ≤30°C and 85% relative humidity.