Ferrites and accessories Toroids (ring cores) R 58.3 u 40.8 u 20.2 Series/Type: B64290A0042, B64290L0042 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 58.3 u 40.8 u 20.2 B64290A0042, B64290L0042 Uncoated / epoxy coating R 58.3 u 40.8 u 20.2 (mm) R 2.295 u 1.606 u 0.795 (inch) Dimensions d (mm) d (mm) Height (mm) d (inch) d (inch) Height (inch) a i a i 1) 58.3 r 1.0 40.8 r 0.8 20.2 r 0.5 2.295 r 0.039 1.606 r 0.031 0.795 r 0.016 uncoated 60.1 max. 39.2 min. 21.5 max. 2.366 max. 1.543 min. 0.846 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 1000 r 25% 700 B64290A0042X010 0.87 152.4 174.9 26660 130 N87 3200 r 25% 2200 B64290L0042X087 N30 6200 r 25% 4300 B64290L0042X830 T65 7200 r 30% 5000 B64290L0042X065 T37 8000 r 25% 5600 B64290L0042X037 N87: P (200 mT, 100 kHz, 100 C) < 16.6 W/core V K10: Z (0.25 mT, 25 MHz, 25 C, 1 turn): 50 typ. (0.25 mT, 100 MHz, 25 C, 1 turn): 80 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.