Block FS-1EFD Series Size 20/10/7 Ferrite Transformer Cores
FS-1EFD series size 13/7/4 ferrite transformer cores made from N87. These EFD low profile type ferrite transformer cores are available with air gaps inserted: Stock number 840-7480 has a 0.1mm gap Stock number 840-7563 has a 0.2mm gap Stock number 840-7561 has a 0.5mm gap Stock number 840-7733 has a 1.0mm gap Typical applications for these ferrite cores include transformers and inductors in switch mode power supplies For bobbins see stock numbers 840-7317 and 840-7311
Transformer Ferrite Kits - Cores
The AL value in the table applies to a core set consisting of two cores without air gap Cores ETD conform to IEC 51(CO)276