ER28 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – ER cores

Ferroxcube
ER cores
ER28/14/11
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
0.786 mm^−1
5260 mm³
64.0 mm
81.4 mm²
77.0 mm²
≈ 14 g
handbook, halfpage
9.75
0.4
11.4
0.35
14
0.2
28.55 0.55
21.75 0.5
9.9 0.25
MGC189
Dimensions in mm.
Fig.1 ER28/14/11 core half.
Core halves
Clamping force for A_L measurements, 40 ±20 N. Gapped cores are available on request.
GRADE
A_L
(nH)
µ_e
AIR GAP
(µm)
TYPE NUMBER
3C90
3C94
2 900 ±25%
2 900 ±25%
≈1 800
≈1 800
≈0
ER28/14/11-3C90
≈0
ER28/14/11-3C94
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
≤ 0.63
−
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
≤ 0.67
≤ 0.5
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
≤ 3.2
2008 Sep 01
770