B66208 Datasheet, PDF (2/11 Pages) TDK Electronics – Ferrites and accessories

E 25/13/7 (EF 25)
Core
B66317
■ To IEC 61246
■ Delivery mode: single units
Magnetic characteristics (per set)
6l/A = 1.1 mm^–1
l_e = 57.5 mm
A_e = 52.5 mm^2
A_min = 51.5 mm^2
V_e = 3020 mm³
Approx. weight 16 g/set
Ungapped
Material
N30
N27
N87
A_L value
nH
2900 +30/–20%
1750 +30/–20%
1850 +30/–20%
P_e
2530
1520
1620
P_V
W/set
Ordering code
B66317G0000X130
< 0.59 (200 mT, 25 kHz, 100 °C) B66317G0000X127
< 1.60 (200 mT, 100 kHz, 100 °C) B66317G0000X187
Gapped
Material g

mm
A_L value
P_e
approx.
nH
N27,
0.10r0.02
489
425
N87
0.16r0.02
347
302
0.25r0.02
250
218
0.50r0.05
151
131
1.00r0.05
91
79
Ordering code
** = 27 (N27)
** = 87 (N87)
B66317G0100X1**
B66317G0160X1**
B66317G0250X1**
B66317G0500X1**
B66317G1000X1**
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”)
Material
N27
N87
Relationship between
air gap – A_L value
K1 (25 °C) K2 (25 °C)
90
– 0.731
90
– 0.731
Calculation of saturation current
K3 (25 °C)
139
139
K4 (25 °C)
– 0.847
– 0.796
K3 (100 °C) K4 (100 °C)
129
– 0.865
125
– 0.873
Validity range:
K1, K2: 0.10 mm < s < 2.00 mm
K3, K4: 60 nH < A_L < 570 nH
Please read Cautions and warnings and
Important notes at the end of this document.
2 06/16