Ferrites and accessories
Toroids (ring cores)
R 58.3 u 40.8 u 17.6
Series/Type: B64290A0040, B64290L0040
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 17.6 B64290A0040, B64290L0040
Uncoated / epoxy coating R 58.3 u 40.8 u 17.6 (mm)
R 2.295 u 1.606 u 0.693 (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 17.6 r 0.4 2.295 r 0.039 1.606 r 0.031 0.693 r 0.016 uncoated
60.1 max. 39.2 min. 18.8 max. 2.366 max. 1.543 min. 0.740 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 900 r 25% 700 B64290A0040X010 1.00 152.4 152.4 23230 115
N87 2760 r 25% 2200 B64290L0040X087
N30 5400 r 25% 4300 B64290L0040X830
T65 6250 r 30% 5000 B64290L0040X065
T37 7160 r 25% 5700 B64290L0040X037
N87: P (200 mT, 100 kHz, 100 C) < 14.5 W/core
V
K10: Z (0.25 mT, 25 MHz, 25 C, 1 turn): 45 typ.
(0.25 mT, 100 MHz, 25 C, 1 turn): 70 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.