Ferrites and accessories
E 42/21/20
Core and accessories
Series/Type: B66329, B66243
Date: September 2006, September 2008, August 2010
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EPCOS AG 2010. Reproduction, publication and dissemination of this publication, enclosures
hereto and the information contained therein without EPCOS prior express consent is prohibited.E 42/21/20
Core B66329
To IEC 61246
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A = 0.41 mm
l = 97 mm
e
2
A = 234 mm
e
2
A = 229 mm
min
3
V = 22700 mm
e
Approx. weight 116 g/set
Ungapped
Material A value P Ordering code
L e V
nH W/set
N27 4750 +30/20% 1560 < 4.4 (200 mT, 25 kHz, 100 C) B66329G0000X127
N87 5200 +30/20% 1690 < 12.0 (200 mT, 100 kHz, 100 C) B66329G0000X187
Gapped
Material g A value Ordering code
L e
approx.
mm nH
N27 0.250.02 1029 338 B66329G0250X127
0.500.05 603 198 B66329G0500X127
1.000.05 354 116 B66329G1000X127
1.500.05 259 85 B66329G1500X127
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 354 0.770 574 0.847 534 0.865
N87 354 0.770 555 0.796 521 0.873
Validity range: K1, K2: 0.10 mm < s < 3.00 mm
K3, K4: 160 nH < A < 1500 nH
L
Please read Cautions and warnings and
2 09/06
Important notes at the end of this document.