FERYSTER Sketch with main dimensions ST with molded-in wires w 0,75 mm For applications with enlarged creepage distances. Creepage distances EE 20: at long bobbin side ca. 12 mm at short bobbin side ca. 6 mm Creepage distances EE 25: at long bobbin side ca. 12 mm at short bobbin side ca. 6 mm Standard material: Ultramid A3X2G7, natural. X = note additional pin (throughout core area) ! The additional pin X at the bobbin version EE 25 allows relatively easy and cost efficient core grounding for a static potential b1 b2 b3 b4 h1 h2 k n1 l1 l2 l4 l5 l6 t X1 ±0,1 ±0,2 ±0,2 ±0,2 ±0,1 ±0,2 ±0,1 +0,2 ±0,2 ±0,2 ±0,2 ±0,2 ±0,2 ±0,2 ±0,2 6 13,9 22,7 21 11,1 22,6 3,9 0,6 12,8 13,9 28,5 5,1 5 4 (X1) ±0,2 EE 20, Wz 7958/1ST and Wz 7970/1ST Different width of flanges due to ribs on the short bobbin side X2 X3 1 Type ±0,2 1x9 4x4,5 20 2x4,5 1x4 1x5 EE 20/11/1ST Art.No. Wz 7970/1ST 3806 1 X3 = max. number of slots or terminals EF20-K-H-9P-7970