Ferrites and accessories Toroids (ring cores) R 50.0 u 30.0 u 20.0 Series/Type: B64290A0082, B64290L0082 Date: August 2017 EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited. EPCOS AG is a TDK Group Company. R 50.0 u 30.0 u 20.0 B64290A0082, B64290L0082 Uncoated / epoxy coating R 50.0 u 30.0 u 20.0 (mm) R 1.969 u 1.181 u 0.787 (inch) Dimensions d (mm) d (mm) Height (mm) d (inch) d (inch) Height (inch) a i a i 1) 50.0 r 1.0 30.0 r 0.7 20.0 r 0.5 1.969 r 0.039 1.181 r 0.028 0.787 r 0.020 uncoated 51.8 max. 28.5 min. 21.3 max. 2.039 max. 1.122 min. 0.839 max. coated Characteristics and ordering codes Mate- A value P Ordering code Magnetic characteristics Approx. L i rial (approx.) weight 6 l/A l A V e e e 1 2 3 nH mm mm mm mm g K10 1400 r 25% 700 B64290A0082X010 0.62 120.4 195.7 23560 120 N87 4460 r 25% 2200 B64290L0082X087 N30 8700 r 25% 4300 B64290L0082X830 T65 10000 r 30% 4900 B64290L0082X065 T37 12000 r 25% 6000 B64290L0082X037 T38 17400 r 30% 8500 B64290L0082X038 N87: P (200 mT, 100 kHz, 100 C) < 14.2 W/core V K10: Z (0.25 mT, 25 MHz, 25 C, 1 turn): 75 typ. (0.25 mT, 100 MHz, 25 C, 1 turn): 115 typ. The capacitive effect of turns is not evaluated. Minimum impedance is Z typ -15%. 1) On request. Please read Cautions and warnings and 2 8/17 Important notes at the end of this document.