U25-20-13 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – U, I cores and accessories

Ferroxcube
U, I cores and accessories
CORE SETS
Effective core parameters
SYMBOL
PARAMETER
Σ(I/A)
core factor (C1)
V_e
effective volume
I_e
effective length
A_e
effective area
m
mass of core half
VALUE UNIT
0.85
mm^−1
9180 mm³
88.2 mm
104
mm²
≈ 23.5 g
U25/20/13
24.8 ± 0.7
8.4
± 0.4
11.4
± 0.4
19.6
± 0.2
12.7
± 0.3
MSA141
Dimensions in mm.
Fig.1 U25/20/13 core half.
Core halves
A_L measured on a combination of 2 U cores.
GRADE
A_L
(nH)
3C90
3C94
3C11
3E27
2 900 ±25%
2 900 ±25%
5000 ±25%
6 300 ±25%
µ_e
≈ 2000
≈ 2000
≈ 3400
≈ 4300
TYPE NUMBER
U25/20/13-3C90
U25/20/13-3C94
U25/20/13-3C11
U25/20/13-3E27
Properties of core sets under power conditions
B (mT) at
GRADE
3C90
3C94
H = 250 A/m;
f = 25 kHz;
T = 100 °C
≥320
≥320
f = 25 kHz;
B^ˆ = 200 mT;
T = 100 °C
≤ 1.1
−
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
≤ 1.2
≤ 0.9
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
≤ 5.5
2008 Sep 01
1325