Philips Components Product specification Ferrite ring cores (toroids) TN36/23/15 RING CORES (TOROIDS) Effective core parameters 36.9 ±0.9 handbook, halfpage SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 0.935 mm−1 Ve effective volume 8600 mm3 Ie effective length 89.6 mm Ae effective area 95.9 mm2 m mass of core ≈42 g ,, ,, ,,,, 21.9 ±0.7 Coating 1. The cores are coated with polyamide 11 (PA11), flame retardant in accordance with “UL 94V-2” ; UL file number E 45228 (M). (≈0.3) coating PA11 15.7 ±0.6 CBW300 Isolation voltage 2. DC isolation voltage: 2000 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 TN36/23/15 ring core. Ring core data GRADE 4C65 4A11 3R1(2) 3S4 3F3 3C90 3C11 3E25 3E5(3) 3E6(3) AL (nH) µi 170 ±25% 940 ±25% − 2285 ±25% 2420 ±25% 3090 ±25% 5800 ±25% 7390 ±25% 11400 ±30% 13600 ±30% ≈125 ≈700 ≈800 ≈1700 ≈1800 ≈2300 ≈4300 ≈5500 ≈8500 ≈1000 COLOUR CODE violet uncoated black uncoated blue ultramarine white orange yellow/white purple/white TYPE NUMBER TN36/23/15-4C65 T36/23/15-4A11(1) TN36/23/15-3R1 T36/23/15-3S4(1) TN36/23/15-3F3 TN36/23/15-3C90 TN36/23/15-3C11 TN36/23/15-3E25 TL36/23/15-3E5 TL36/23/15-3E6 Notes 1. Uncoated ring cores have the following dimensions: outside diameter = 36 ±0.7 mm; inside diameter = 23 ±0.5 mm; height = 15 ±0.3 mm. 2. Due to the rectangular BH-loop of 3R1, inductance values strongly depend on the magnetic state of the ring core and measuring conditions. Therefore no AL value is specified. For the application in magnetic amplifiers AL is not a critical parameter. 3. Ring cores in 3E5 and 3E6 are lacquered (polyurethane) and have different dimensions: outside diameter = 36.25 ±0.9 mm; inside diameter = 22.75 ±0.7 mm; height = 15.25 ±0.6 mm; flame retardant in accordance with “UL 94V-2” ; UL file number E 192048. WARNING Do not use 3R1 cores close to their mechanical resonant frequency. For more information refer to “3R1” material specification in this data handbook. 1999 Dec 23 1 Philips Components Product specification Ferrite ring cores (toroids) TN36/23/15 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 ≤0.96 ≤0.96 − 3F3 ≥320 − ≤0.95 ≤1.7 GRADE 1999 Dec 23 2