Ferrites and accessories
E 13/7/4 (EF 12.6)
Core and accessories
Series/Type: B66305, B66202, B66306, B66414
Date: June 2013
Data SheetData Sheet
EPCOS AG 2015. 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. E 13/7/4 (EF 12.6)
Core B66305
To IEC 61246
For miniature transformers
Available with SMD coil former
E cores with high permeability for common-mode
chokes and broadband applications
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A = 2.39 mm
l = 29.6 mm
e
2
A = 12.4 mm
e
2
A = 12.2 mm
min
3
V = 367 mm
e
Approx. weight 2 g/set
Ungapped
Material A value P Ordering code
L e V
nH W/set
N30 1000 +30/20% 1900 B66305G0000X130
T46 3600 30% 6839 B66305F0000X146
N27 800 +30/20% 1510 < 0.40 (200 mT, 100 kHz, 100 C) B66305G0000X127
N87 850 +30/20% 1620 < 0.20 (200 mT, 100 kHz, 100 C) B66305G0000X187
Gapped
Material g A value approx. Ordering code
L e
mm nH
N27 0.040.01 250 454 B66305G0040X127
The A value in the table applies to a core set comprising one ungapped core (dimension g = 0) and
L
one gapped core (dimension g > 0).
Calculation factors (for formulas, see E cores: general information)
Material Relationship between Calculation of saturation current
air gap A value
L
K1 (25 C) K2 (25 C) K3 (25 C) K4 (25 C) K3 (100 C) K4 (100 C)
N27 28.4 0.676 36.5 0.847 33.2 0.865
N87 28.4 0.676 37.5 0.796 32.1 0.873
Validity range: K1, K2: 0.03 mm < s < 1.00 mm
K3, K4: 30 nH < A < 260 nH
L
Please read Cautions and warnings and
2 06/13
Important notes at the end of this document.