Coilcraft, Inc. Flyback Transformers for Texas Instruments LM25184 ZA9671-BE ZA9671-BED

Flyback transformers for Texas Instruments' LM25184 flyback converter, designed to operate up to 300 kHz with a 4-42 V input range, feature 1500 Vrms, one-minute isolation between primary and secondary windings and are AEC-Q200 Grade 3 qualified for operation from -40°C to +85°C. The part is available in tape and reel packaging with 350 units per 13-inch reel, uses ferrite core material, is RoHS compliant and halogen-free, and supports three 40-second reflow solder cycles at +260°C. Weight ranges from 2.73 to 2.80 g. For the ZA9671-BED variant, the output is specified as 5 V at 2.5 A with a 3:1 turns ratio, primary inductance of 9 µH at 0 A, and 8.1 µH at 5 A. Leakage inductance is 0.25 µH, primary DCR is 0.047 Ω, and secondary DCR is 0.0145 Ω.