U20-16-7 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
1.21
mm^−1
3800 mm³
68
mm
56
mm²
≈9
g
U20/16/7
20.8 ± 0.6
6.4 ± 0.4
8.3
± 0.3
15.6
± 0.2
7.5
0.25
MSA140
Dimensions in mm.
Fig.1 U20/16/7 core half.
Core halves
A_L measured on a combination of 2 U cores.
GRADE
A_L
(nH)
3C90
3C94
3C11
3E27
1900 ±25%
1900 ±25%
3100 ±25%
4800 ±25%
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
≤ 0.46
−
µ_e
≈ 1950
≈ 1950
≈ 3000
≈ 4600
TYPE NUMBER
U20/16/7-3C90
U20/16/7-3C94
U20/16/7-3C11
U20/16/7-3E27
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
≤ 0.48
≤ 0.36
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
≤ 2.3
2008 Sep 01
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