Ferroxcube Frame and Bar cores and accessories FRM27/3.8/9 COIL FORMERS General data PARAMETER SPECIFICATION Coil former material liquid crystal polymer (LCP), glass-reinforced, flame retardant in accordance with “UL 94V-0”; UL file number E54705(M) Pin material copper-tin alloy (CuSn), tin-lead alloy (SnPb) plated Maximum operating temperature 155 °C, “IEC 60085”, class F Resistance to soldering heat “IEC 60068-2-20”, Part 2, Test Tb, method 1B, 350 °C, 3.5 s Solderability “IEC 60068-2-20”, Part 2, Test Ta, method 1: 235 °C, 2 s 0.9 27.3 min. 19.2 max. 9.2 ±0.1 handbook, full pagewidth 4.75 − 0.1 3.0 5.35 0.4 0.7 25 29.9 35.0 ±0.25 CBW545 36.0 ±0.25 32.5 ±0.15 0.4 0.5+0.05 0 0.4 ±0.05 (×4) 9.2 ±0.1 2.7 1.6 2.6 (×5) Dimensions in mm. Fig.3 SMD coil former for FRM27/3.8/9. Winding data NUMBER OF SECTIONS NUMBER OF SOLDER PADS WINDING AREA (mm2) WINDING WIDTH (mm) AVERAGE LENGTH OF TURN (mm) 6 8 1.75 + 5 × 1.7 2.7 + 5 × 2.6 18.5 TYPE NUMBER CPHS-FRM27/9-6S-8P