Ferroxcube E F D cores and acces s ories E F D20 C OIL F OR ME R S G eneral data P A R A ME T E R S P E C IF IC A T ION C oil former material phenolformaldehyde (P F ), glas s reinforced, flame retardant in accordance with “UL94 V-0”; UL file number E 41429 S older pad material copper-tin alloy (C uS n), tin- (S n) plated Maximum operating temperature 180 ° C , “IE C 60 085”, clas s H R es is tance to s oldering heat “IE C 60 068-2-20”, Part 2, Tes t T b, method 1B , 350 °C , 3.5 s S olderability “IE C 60 068-2-20”, Part 2, Tes t Ta, method 1, 235 °C , 2 s W inding data of r E F D20 c oil of rmer (S MD) with 0-s 1 older pads NUMB E R OF S E C T IONS NUMB E R OF S OL DE R P ADS W INDING AR E A (mm 2) MINIMUM W INDING W IDT H (mm) AV E R A G E L E NG T H OF T UR N (mm) 1 10 27.2 13.3 34.9 T Y P E NUMB E R C S HS -E F D20-1S -10P -T Z