EC-configured Cores

Example of designation in design documentation:
SDMR 40 EС110/35
where:
SDMR40 - ferrite’s brand
EC - product’s configuration (EC-configured core)
110/35 - product’s standard size

Geometrical Dimensions of EC-configured Cores

Standard Size A,mm Bmin,mm C,mm D,mm E,mm F,mm
EC70 70±1.5 44.5 16.4±0.4 16.4±0.4 22.75±0.3 34.5±0.3
EC90 90±2 70 30±0.5 30±0.5 30±0.3 45±0.3
EC110/35 110-2+3 90 30±0.5 30±0.5 25±0.3 35±0.3
ЕС110/45 110-2+3 90 30±0.5 30±0.5 35±0.3 45±0.3
ЕС112/50 112-2+3 93 31±0.5 31±0.5 39±0.5 50±0.3
ЕС112/52 112-2+3 93 31±0.5 31±0.5 41.5±0.3 52±0.3
EC120 120-2+3 93.3 30±1 30±1 35.5±1 50.5±1

Effective Parameters and Mass of EC-configured Cores

Standard Size C1(mm-1) Ae(mm2) Le(mm) Ve(mm3) AL, nH +20% Weight, g
EC70 0.68 211 143 55612 3694 270
EC90 0.29 706 205 159390 8664 770
EC110/35 0.303 706 205 131325 8664 630
EC110/45 0.346 706 245 157455 7248 760
EC112/50 0.355 754 265 181168 7168 870
EC112/52 0.363 754 274 184413 6908 890
EC120 0.354 706 250 215032 7096 1030