Ferroxcube
Planar ER cores and accessories
CORE SETS
Effective core parameters
SYMBOL
Σ(I/A)
V
e
I
e
A
e
A
min
m
PARAMETER
core factor (C1)
effective volume
effective length
effective area
minimum area
mass of core half
VALUE
1.08
333
19.0
17.6
17.3
≈
0.9
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
14.5
±0.2
11.8
±0.2
4.8 0
−0.2
+0.2
handbook, halfpage
1.55
0
ER14.5/3/7
2.95
±0.05
6.8 0
−0.2
CBW229
Dimensions in mm.
Fig.1 ER14.5/3/7 core half.
Core sets for general purpose transformers and power applications
Clamping force for A
L
measurements, 10
±5
N.
GRADE
3C92
3C93
3C94
A
L
(nH)
1 250
±25%
1 400
±25%
100
±3%
160
±5%
250
±8%
1 600
±25%
3C96
3F3
1 500
±25%
100
±3%
160
±5%
250
±8%
1 400
±25%
3F35
3F4
1 150
±25%
100
±3%
160
±5%
250
±8%
850
±25%
3F45
850
±25%
µ
e
≈
1070
≈
1200
≈
86
≈
137
≈
215
≈
1370
≈
1290
≈
86
≈
137
≈
215
≈
1200
≈
990
≈
86
≈
137
≈
215
≈
730
≈
730
AIR GAP
(µm)
≈
0
≈
0
≈
250
≈
150
≈
90
≈
0
≈
0
≈
250
≈
150
≈
90
≈
0
≈
0
≈
240
≈
130
≈
70
≈
0
≈
0
TYPE NUMBER
ER14.5/3/7-3C92-S
ER14.5/3/7-3C93-S
ER14.5/3/7-3C94-A100-S
ER14.5/3/7-3C94-A160-S
ER14.5/3/7-3C94-A250-S
ER14.5/3/7-3C94-S
ER14.5/3/7-3C96-S
ER14.5/3/7-3F3-A100-S
ER14.5/3/7-3F3-A160-S
ER14.5/3/7-3F3-A250-S
ER14.5/3/7-3F3-S
ER14.5/3/7-3F35-S
ER14.5/3/7-3F4-A100-S
ER14.5/3/7-3F4-A160-S
ER14.5/3/7-3F4-A250-S
ER14.5/3/7-3F4-S
ER14.5/3/7-3F45-S
2004 Sep 01
2
Ferroxcube
Planar ER cores and accessories
Core sets of high permeability grades
Clamping force for A
L
measurements.
GRADE
3E6
A
L
(nH)
7900
+40/−30%
µ
e
≈
6800
AIR GAP
(µm)
≈
0
ER14.5/3/7
TYPE NUMBER
ER14.5/3/7-3E6-S
Properties of core sets under power conditions
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
°C
≥370
≥320
≥320
≥340
≥300
≥300
≥250
f = 100 kHz;
ˆ
B = 100 mT;
T = 100
°C
≤
0.032
≤
0.032
(1)
≤
0.032
≤
0.025
≤
0.043
−
−
CORE LOSS (W) at
f = 100 kHz;
ˆ
B = 200 mT;
T = 100
°C
≤
0.2
≤
0.2
(1)
≤
0.2
≤
0.16
−
−
−
f = 400 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
≤
0.06
≤
0.061
≤
0.03
−
f = 500 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
≤
0.13
−
≤
0.045
−
3C92
3C93
3C94
3C96
3F3
3F35
3F4
1.
Measured at 140
°C.
Properties of core sets under power conditions (continued)
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
°C
≥370
≥320
≥320
≥340
≥300
≥300
≥250
≥250
f = 500 kHz;
ˆ
B = 100 mT;
T = 100
°C
−
−
−
−
−
≤
0.35
−
−
CORE LOSS (W) at
f = 1 MHz;
ˆ
B = 30 mT;
T = 100
°C
−
−
−
−
−
−
≤
0.1
≤
0.67
f = 1 MHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
−
−
−
−
≤
0.17
f = 3 MHz;
ˆ
B = 10 mT;
T = 100
°C
−
−
−
−
−
−
≤
0.16
≤
0.12
3C92
3C93
3C94
3C96
3F3
3F35
3F4
3F45
2004 Sep 01
3
Ferroxcube
Planar ER cores and accessories
COIL FORMERS
General data
PARAMETER
Coil former material
Pin material
Maximum operating temperature
Resistance to soldering heat
Solderability
SPECIFICATION
ER14.5/3/7
liquid crystal polymer (LCP), glass reinforced, flame retardant
in accordance with
“UL 94V-0”
; UL file number E54705(M)
copper-tin alloy (CuSn), tin (Sn) plated
155
°C,
“IEC 60085”,
class F
“IEC 60068-2-20”
, Part 2, Test Tb, method 1B: 350
°C,
3.5 s
“IEC 60068-2-20”
, Part 2, Test Ta, method 1: 235
°C,
2 s
∅11.4 ±0.1
∅5.9 ±0.1
1.7
14
±0.1
∅5 ±0.1
1.7
1.9 min.
3
±0.1
5.45
max.
13.6
0.7
5
10
14.6
16.15 max.
2.5
CBW262
Dimensions in mm.
Fig.2 ER14.5/3/7 coil former (SMD); 10-solder pads.
Winding data for ER14.5/3/7 coil former (SMD) with 10 solder pads
NUMBER OF
SECTIONS
1
WINDING
AREA
(mm
2
)
5.1
MINIMUM
WINDING
WIDTH
(mm)
1.9
AVERAGE
LENGTH OF
TURN
(mm)
27
TYPE NUMBER
CPVS-ER14.5-1S-10P-Z
2004 Sep 01
4