E 40/16/12
Core
I
Size based on US lam. size E cores
B66381
US designation E 21
I
E cores are supplied as single units
Magnetic characteristics
(per set)
危
l/A
l
e
A
e
A
min
V
e
= 0,52 mm
鈥?
= 77 mm
= 149 mm
2
= 143 mm
2
= 11 500 mm
3
Approx. weight
58 g/set
Ungapped
Material
N27
N72
A
L
value
nH
碌
e
A
L1min
P
V
nH
W/set
Ordering code
3800 + 30/鈥?20 % 1560 3050
4600 + 30/鈥?20 % 1900 3150
< 2,15
B66381-G-X127
(200 mT, 25 kHz, 100 擄C)
< 1,12
B66381-G-X172
(200 mT, 25 kHz, 100 擄C)
Gapped
Material
N27
g
mm
0,50
鹵
0,05
A
L
value approx.
nH
411
碌
e
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
鈥淓 cores: general information鈥?
page 382)
Material
Relationship between
air gap 鈥?/div>
A
L
value
K1
(25 擄C)
N27
Validity range:
239
K2
(25 擄C)
鈥?0,782
Calculation of saturation current
K3
(25 擄C)
378
K4
(25 擄C)
鈥?0,847
K3
(100 擄C)
K4
(100 擄C)
351
鈥?0,865
K1, K2:
0,10 mm <
s
< 2,50 mm
K3, K4:
130 nH <
A
L
< 1200 nH
425
08/01
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