ER35 Datasheet, PDF (2/3 Pages) Ferroxcube International Holding B.V. – ER cores

Ferroxcube
ER cores
ER35/21/11
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
0.849 mm^−1
9710 mm³
90.8 mm
107
mm²
100
mm²
≈ 23 g
handbook, halfpage
14.75
0.35
11.4
0.35
20.7
0.2
35 0.65
26.15 0.55
11.3 0.25
MGC304
Dimensions in mm.
Fig.1 ER35/21/11 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
2800 ±25%
2800 ±25%
≈ 1900
≈ 1900
≈0
ER35/21/11-3C90
≈0
ER35/21/11-3C94
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
≤ 1.2
−
CORE LOSS (W) at
f = 100 kHz;
B^ˆ = 100 mT;
T = 100 °C
≤ 1.3
≤ 0.95
f = 100 kHz;
B^ˆ = 200 mT;
T = 100 °C
−
≤ 5.8
2008 Sep 01
776