TN20/10/7-3E25 Ferroxcube

FERROXCUBE DATA SHEET TN20/10/7 Ferrite toroids Supersedes data of September 2004 2008 Sep 01Ferroxcube Ferrite toroids TN20/10/7 RING CORES (TOROIDS) Effective core parameters SYMBOL PARAMETER VALUE UNIT 20.6 0.6 handbook, halfpage 1 (I/A) core factor (C1) 1.30 mm 3 V effective volume 1465 mm e I effective length 43.6 mm e 2 A effective area 33.6 mm e m mass of core 7.7 g Coating 9.2 0.4 The cores are coated with polyamide 11 (PA11), flame coating PA11 (0.3) retardant in accordance with UL 94V-2 UL file number E 45228 (M). 7.5 The colour is white. 0.45 Maximum operating temperature is 160 C. CBW308 Isolation voltage DC isolation voltage: 2000 V. Dimensions in mm. Contacts are applied on the edge of the ring core, which is also the critical point for the winding operation. Fig.1 TN20/10/7 ring core. Ring core data A L GRADE TYPE NUMBER i (nH) 4C65 121 25% 125 TN20/10/7-4C65 3C90 2230 25% 2300 TN20/10/7-3C90 3C11 4150 25% 4300 TN20/10/7-3C11 3E25 5340 25% 5500 TN20/10/7-3E25 Properties of cores under power conditions B (mT) at CORE LOSS (W) at H = 250 A/m f = 25 kHz f = 100 kHz GRADE f= 25 kHz B = 200 mT B = 100 mT T = 100 C T=100 C T = 100 C 3C90 320 0.15 0.16 2008 Sep 01 1667