B66335 Datasheet, PDF (1/2 Pages) EPCOS – E 55/28/21 Core

E 55/28/21
Core
I In accordance with IEC 61246
I E cores are supplied as single units
Magnetic characteristics (per set)
Σl/A = 0,35 mm^–1
l_e = 124 mm
A_e = 354 mm²
A_min = 351 mm²
V_e = 43 900 mm³
Approx. weight 215 g/set
B66335
Ungapped
Mate- A_L value
rial nH
µ_e
A_L1min P_V
nH W/set
Ordering code
N27 5800 + 30/– 20 % 1610 4500 < 8,00 (200 mT, 25 kHz, 100°C) B66335-G-X127
N87 6400 + 30/– 20 % 1780 4500 < 3,80 (100 mT, 100 kHz, 100°C) B66335-G-X187
Gapped
Mate- g
rial
mm
A_L value
µ_e
approx.
nH
N27, 0,50 ± 0,05
843
234
N87 1,00 ± 0,05
496
138
1,50 ± 0,05
364
101
2,00 ± 0,05
292
81
Ordering code
** = 27 (N27)
** = 87 (N87)
B66335-G500-X1**
B66335-G1000-X1**
B66335-G1500-X1**
B66335-G2000-X1**
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
N87
Relationship between
air gap – A_L value
K1 (25 °C) K2 (25 °C)
496
– 0,764
496
– 0,764
Calculation of saturation current
K3 (25 °C)
836
800
K4 (25 °C)
– 0,847
– 0,796
K3 (100 °C) K4 (100 °C)
781
– 0,865
765
– 0,873
Validity range:
K1, K2: 0,15 mm < s < 3,50 mm
K3, K4: 180 nH < A_L < 1799 nH
430 08/01