E 13/7/4 (EF 12,6)
Core
B66305
Calculation factors (for formulas, see “E cores: general information”, page 382)
Material
N27
N87
Relationship between
air gap – AL value
K1 (25 °C) K2 (25 °C)
28,4
– 0,676
28,4
– 0,676
Calculation of saturation current
K3 (25 °C)
36,5
37,5
K4 (25 °C)
– 0,847
– 0,796
K3 (100 °C) K4 (100 °C)
33,2
– 0,865
32,1
– 0,873
Validity range:
K1, K2: 0,03 mm < s < 1,00 mm
K3, K4: 30 nH < AL < 260 nH
391 08/01