Block FS-1E Series Size 42/21/20 Ferrite Transformer Cores
FS-1E series size 42/21/20 ferrite transformer cores made from N87. These standard 'E' type ferrite transformer cores are available with air gaps inserted: Stock number 840-7468 has a 0.1mm gap Stock number 840-7541 has a 0.2mm gap Stock number 840-7639 has a 0.5mm gap Stock number 840-7711 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 840-7288 and 840-7282
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