B66381 Datasheet, PDF (1/2 Pages) EPCOS – E 40/16/12 Core

E 40/16/12
Core
I Size based on US lam. size E cores
US designation E 21
I E cores are supplied as single units
Magnetic characteristics (per set)
Σl/A = 0,52 mm^–1
l_e = 77 mm
A_e = 149 mm²
A_min = 143 mm²
V_e = 11 500 mm³
Approx. weight 58 g/set
B66381
Ungapped
Material
N27
N72
A_L value
nH
µ_e A_L1min P_V
nH W/set
Ordering code
3800 + 30/– 20 % 1560 3050 < 2,15
B66381-G-X127
(200 mT, 25 kHz, 100 °C)
4600 + 30/– 20 % 1900 3150 < 1,12
B66381-G-X172
(200 mT, 25 kHz, 100 °C)
Gapped
Material
N27
g
mm
0,50 ± 0,05
A_L value approx. µ_e
nH
411
166
Ordering code
B66381-G500-X127
The A_L value in the table applies to a core set comprising one ungapped core (dimension g = 0) and
one gapped core (dimension g > 0).
Calculation factors (for formulas, see “E cores: general information”, page 382)
Material
N27
Relationship between
air gap – A_L value
K1 (25 °C) K2 (25 °C)
239
– 0,782
Calculation of saturation current
K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C)
378
– 0,847
351
– 0,865
Validity range:
K1, K2: 0,10 mm < s < 2,50 mm
K3, K4: 130 nH < A_L < 1200 nH
425 08/01