Ferrites and accessories
E80/38/20
Core and accessories
Series/Type: B66375
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 80/38/20
Core B66375
Delivery mode: single units
Magnetic characteristics (per set)
1
l/A = 0.47 mm
l = 184 mm
e
2
A = 390 mm
e
2
A = 388 mm
min
3
V = 71800 mm
e
Approx. weight 358 g/set
Ungapped
Mate- A value B * P Ordering code
L e S V
rial nH mT W/set
N27 4150 +30/20% 1550 320 < 13.30 (200 mT, 25 kHz, 100 C) B66375G0000X127
N87 4500 +30/20% 1680 320 < 6.50 (100 mT, 100 kHz, 100 C) B66375G0000X187
* H = 250 A/m; f = 10 kHz; T = 100 C
Gapped
Material g A value Ordering code
L e
approx.
mm nH
N27 0.500.05 882 329 B66375G0500X127
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 539 0.710 867 0.847 816 0.865
N87 539 0.710 804 0.796 806 0.873
Validity range: K1, K2: 0.20 mm < s < 5.00 mm
K3, K4: 140 nH < A < 1330 nH
L
Please read Cautions and warnings and
2 06/13
Important notes at the end of this document.