Ferrites and accessories
E 55/28/21
Core
Series/Type: B66335
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 55/28/21
Core B66335
To IEC 61246
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A = 0.35 mm
l = 124 mm
e
2
A = 354 mm
e
2
A = 351 mm
min
3
V = 43900 mm
e
Approx. weight 215 g/set
Ungapped
Mate- A value B * P Ordering code
L e S V
rial nH mT W/set
N27 5800 +30/20% 1610 320 < 8.00 (200 mT, 25 kHz, 100 C) B66335G0000X127
N87 6400 +30/20% 1780 320 < 3.80 (100 mT, 100 kHz, 100 C) B66335G0000X187
N97 6700 +30/20% 1868 320 < 3.34 (100 mT, 100 kHz, 100 C) B66335G0000X197
* H = 250 A/m; f = 10 kHz; T = 100 C
Gapped
Material g A value Ordering code
L e
approx. ** = 27 (N27)
mm nH ** = 87 (N87)
N27, 0.500.05 843 234 B66335G0500X1**
N87 1.000.05 496 138 B66335G1000X1**
1.500.05 364 101 B66335G1500X1**
2.000.05 292 81 B66335G2000X1**
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 496 0.764 836 0.847 781 0.865
N87 496 0.764 800 0.796 765 0.873
Validity range: K1, K2: 0.15 mm < s < 3.50 mm
K3, K4: 180 nH < A < 1799 nH
L
Please read Cautions and warnings and
2 06/13
Important notes at the end of this document.
