E20-3C90 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – E cores and accessories

Ferroxcube
E 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
A_min
minimum area
m
mass of core half
VALUE UNIT
2.54 mm^−1
1513 mm³
62.0 mm
24.4 mm²
22.8 mm²
≈ 4.3 g
handbook, halfpage
handbook, halfpage
20 ±0.3
14.3 min.
4.55
±0.15
E20/14/5
(EC19)
11.15
±0.15 13.55
±0.15
5 ±0.2
CBW557
Dimensions in mm.
Fig.1 E20/14/5 core half.
Core halves
Clamping force for A_L measurements, 20 ±10 N. Gapped cores are available on request.
GRADE
A_L
(nH)
µ_e
AIR GAP
(µm)
3C90
900 ±25%
≈ 1820
≈0
3C92
660 ±25%
≈ 1330
≈0
TYPE NUMBER
E20/14/5-3C90
E20/14/5-3C92
Core halves of high permeability grades
Clamping force for A_L measurements, 20 ±10 N.
GRADE
A_L
(nH)
µ_e
3E26
2300 ±25%
≈ 4650
AIR GAP
(µm)
≈0
TYPE NUMBER
E20/14/5-3E26
Properties of core sets under power conditions
B (mT) at
GRADE
3C90
3C92
H = 250 A/m;
f = 25 kHz;
T = 100 °C
≥330
≥370
f = 25 kHz;
B^ˆ = 200 mT;
T = 100 °C
≤ 0.16
−
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
≤ 0.18
≤ 0.13
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
≤ 0.9
2008 Sep 01
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