U25-16-6 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
2.07
mm^−1
3380 mm³
83.6 mm
40.3 mm²
≈ 8.0 g
handbook, halfpage
U25/16/6
(376U250)
25.4
+
−
0.5
0.4
12.7 ± 0.25
9.5
± 0.13
15.9
± 0.13
6.4 ± 0.13
MBE980
Dimensions in mm.
Fig.1 U25/16/6 core half.
Core halves
A_L measured on a combination of 2 U cores.
GRADE
A_L
(nH)
3C81
3C90
1400 ±25%
1200 ±25%
3C91
1400 ±25%
3C94
1200 ±25%
3C11
2050 ±25%
3E27
2500 ±25%
µ_e
≈ 2300
≈ 2300
≈ 2300
≈ 2300
≈ 3380
≈ 4130
TYPE NUMBER
U25/16/6-3C81
U25/16/6-3C90
U25/16/6-3C91
U25/16/6-3C94
U25/16/6-3C11
U25/16/6-3E27
Properties of core sets under power conditions
B (mT) at
GRADE
3C81
3C90
3C91
3C94
H = 250 A/m;
f = 25 kHz;
T = 100 °C
≥320
≥320
≥320
≥320
f = 25 kHz;
B^ˆ = 200 mT;
T = 100 °C
≤ 0.78
≤ 0.4
−
−
Note
1. Measured at 60 °C.
2008 Sep 01
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
−
≤ 0.4
≤ 0.23⁽¹⁾
≤ 0.3
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
−
≤ 1.6⁽¹⁾
≤ 2.0
1319
f = 400 kHz;
B^ˆ = 50 mT;
T = 100 °C
−
−
−
−