Philips Components Product specification Ferrite ring cores (toroids) TN10/6/4 RING CORES (TOROIDS) Effective core parameters SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 3.07 mm−1 Ve effective volume 188 mm3 Ie effective length 24.1 mm Ae effective area 7.8 mm2 m mass of core ≈0.95 g 10.6 ±0.3 handbook, halfpage ,, ,, ,,,, 5.2 ±0.3 Coating (≈0.3) The cores are coated with polyamide 11 (PA11), flame retardant in accordance with “UL 94V-2” ; UL file number E 45228 (M). coating PA11 4.4 ±0.3 Isolation voltage CBW314 DC isolation voltage: 1000 V. Contacts are applied on the edge of the ring core, which is also the critical point for the winding operation. Dimensions in mm. Fig.1 TN10/6/4 ring core. Ring core data GRADE AL (nH) µi COLOUR CODE TYPE NUMBER 4C65 52 ±25% ≈125 violet TN10/6/4-4C65 4A11 286 ±25% ≈700 pink TN10/6/4-4A11 3F3 740 ±25% ≈1800 blue TN10/6/4-3F3 3C90 940 ±25% ≈2300 ultramarine TN10/6/4-3C90 3C11 1750 ±25% ≈4300 white TN10/6/4-3C11 3E25 2250 ±30% ≈5500 orange TN10/6/4-3E25 3E5 3470 ±30% ≈8500 yellow/white TL10/6/4-3E5(1) 3E6 4085 ±30% ≈10000 purple/white TL10/6/4-3E6(1) Note 1. Ring cores in 3E5 and 3E6 are lacquered (polyurethane) and have different dimensions: Outside diameter = 10.25 ±0.4 mm; inside diameter = 5.75 ±0.3 mm; height = 4.25 ±0.3 mm; flame retardant in accordance with “UL 94V-2” ; UL file number E 192048. Properties of cores under power conditions B (mT) at CORE LOSS (W) at H = 250 A/m; f = 25 kHz; T = 100 °C f = 25 kHz; ˆ = 200 mT; B T = 100 °C f = 100 kHz; ˆ = 100 mT; B T = 100 °C f = 400 kHz; ˆ = 50 mT; B T = 100 °C 3C90 ≥320 ≤0.021 ≤0.021 − 3F3 ≥320 − ≤0.03 ≤0.04 GRADE 1999 Dec 23 1