Ferrxocube EFD cores and accessories EFD25 COIL FORMERS General data PARAMETER SPECIFICATION Coil former material Phenolformaldehyde (PF), glass reinforced, flame retardant in accordance with „UL 94V-0“; UL file number E41429 Pin material Copper-tin alloy (CuSn), tin - (Sn) plated Maximum operating temperature 180°C, “IEC 60085”, class H Resistance to soldering heat “IEC 60068-2020”, Part 2, Test Tb, method 1B: 350°C, 3.5 s Solderability “IEC 60068-2020”, Part 2, Test Ta, method 1: 235°C, 2 s Winding data for EFD15 coil former (SMD) NUMBER OF SECTIONS WINDING AREA 2 (mm ) MINIMUM WINDING WIDTH (mm) AVERAGE LENGTH OF TURN (mm) TYPE NUMBER 1 15 16.45 46.4 CSHS-EFD25-1S-12P-TZ