The MSD1278 series consists of shielded coupled inductors with tight coupling (k ≥ 0.98) and 500 Vrms winding-to-winding isolation, designed for use in flyback, SEPIC, buck, and Zeta converter topologies. The MSD1278-474 variant has an inductance of 47 µH ±20% per winding, a maximum DCR of 0.180 Ω per winding, and a typical self-resonant frequency of 6.0 MHz. It handles a saturation current of 1.45 A and a thermal current rating of 1.41 A per winding. The component is rated for ambient temperatures from -40°C to +85°C and maximum part temperature of +125°C. It features a ferrite core, RoHS-compliant matte tin over nickel over phosphor bronze terminations, and is packaged in 13" machine-ready reels of 500 parts with 24 mm wide plastic tape. The series meets AEC-Q200 Grade 3 qualifications for operation from -40°C to +85°C and complies with MSL 1 moisture sensitivity requirements.
Coilcraft's MSD1278 Series of 1:1 coupled power inductors feature magnetic shielding for compact packaging and tight winding-to-winding coupling. They are ideal for Flyback, SEPIC, Ćuk, Zeta and other applications.
See Selecting inductors for SEPIC
| Coilcraft, Inc. | |
|---|---|
| Product Category | Power Transformers |
| Product Number | MSD1278-474 MSD1278-474KLD |
| Product Name | MSD1278 Series Shielded Coupled Power Inductors |
| Cooling Method | Air |
