TN23/14/7-3E25 Ferroxcube

FERROXCUBE DATA SHEET TN23/14/7 Ferrite toroids Supersedes data of September 2004 2008 Sep 01Ferroxcube Ferrite toroids TN23/14/7 RING CORES (TOROIDS) R Effective core parameters i 23.7 0.7 SYMBOL PARAMETER VALUE UNIT handbook, halfpage n g 1 (I/A) core factor (C1) 1.81 mm 3 V effective volume 1722 mm e c I effective length 55.8 mm e o 2 r A effective area 30.9 mm e e m mass of core 8.4 g 13.1 0.6 d Coating a coating PA11 (0.3) The cores are coated with polyamide 11 (PA11), flame t retardant in accordance with UL 94V-2 UL file number a E 45228 (M). 7.5 0.45 The colour is white. Maximum operating temperature is 160 C. CBW307 Isolation voltage Dimensions in mm. DC isolation voltage: 2000 V. Contacts are applied on the edge of the ring core, which is Fig.1 TN23/14/7 ring core. also the critical point for the winding operation. A L GRADE TYPE NUMBER i (nH) 4C65 87 25% 125 TN23/14/7-4C65 (1) 4A11 486 25% 700 TN23/14/7-4A11 (2) 3R1 800 TN23/14/7-3R1 3F3 1250 25% 1800 TN23/14/7-3F3 3C90 1600 25% 2300 TN23/14/7-3C90 3C11 3000 25% 4300 TN23/14/7-3C11 3E25 3820 25% 5500 TN23/14/7-3E25 1. Old permeability specification maintained. 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 A value is specified. For the application in magnetic amplifiers A is not a critical parameter. L L WARNING Do not use 3R1 cores close to their mechanical resonant frequency. For more information refer to 3R1 material specification in this data handbook. 2008 Sep 01 1679