Ferrites and accessories
E 36/18/11
Core and accessories
Series/Type: B66389, B66390
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 36/18/11
Core B66389
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A = 0.68 mm
l = 81 mm
e
2
A = 120 mm
e
2
A = 112 mm
min
3
V = 9720 mm
e
Approx. weight 50 g/set
Ungapped
Material A value P Ordering code
L e V
nH W/set
N27 2900 +30/20% 1550 < 1.85 (200 mT, 25 kHz, 100 C) B66389G0000X127
N87 3100 +30/20% 1680 < 5.00 (200 mT, 100 kHz, 100 C) B66389G0000X187
Gapped
Material g A value Ordering code
L e
approx.
mm nH
N27 1.000.05 183 96 B66389G1000X127
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 182 0.749 302 0.847 280 0.865
N87 182 0.749 295 0.796 273 0.873
Validity range: K1, K2: 0.10 mm < s < 2.50 mm
K3, K4: 100 nH < A < 930 nH
L
Please read Cautions and warnings and
2 06/13
Important notes at the end of this document.