FERROXCUBE
DATA SHEET
ETD49/25/16
ETD cores and accessories
Supersedes data of September 2004
2008 Sep 01
Ferroxcube
ETD 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
0.534
24000
114
211
209
≈
62
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
0
16.7 0.6
0
49.8 2.2
36.1 1.8
0
0
16.7 0.6
handbook, halfpage
ETD49/25/16
17.7 0.8
0
24.7
0.2
MGC270
Dimensions in mm.
Fig.1 ETD49/25/16 core half.
Core halves
Clamping force for A
L
measurements, 50
±20
N. Gapped cores are available on request.
GRADE
3C90
3C94
3C95
3F3
A
L
(nH)
4200
±25%
4200
±25%
5140
±25%
3900
±25%
µ
e
≈
1810
≈
1810
≈
2210
≈
1680
AIR GAP
(µm)
≈
0
≈
0
≈
0
≈
0
TYPE NUMBER
ETD49/25/16-3C90
ETD49/25/16-3C94
ETD49/25/16-3C95
ETD49/25/16-3F3
Properties of core sets under power conditions
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
°C
≥330
≥330
≥330
≥320
f = 25 kHz;
ˆ
= 200 mT;
B
T = 100
°C
≤
2.9
−
−
−
f = 100 kHz;
ˆ
B = 100 mT;
T = 100
°C
≤
3.1
≤
2.3
−
≤
3.0
CORE LOSS (W) at
f = 100 kHz;
ˆ
B = 200 mT;
T = 25
°C
−
−
≤
15.1
−
f = 100 kHz;
ˆ
B = 200 mT;
T = 100
°C
−
≤
12.4
≤
14.4
−
f = 400 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
≤
5.4
3C90
3C94
3C95
3F3
2008 Sep 01
2
Ferroxcube
ETD cores and accessories
COIL FORMERS
General data 20-pins ETD49/25/16 coil former
PARAMETER
Coil former material
Pin material
Maximum operating temperature
Resistance to soldering heat
Solderability
SPECIFICATION
ETD49/25/16
polybutyleneterephtalate (PBT), glass-reinforced, flame retardant
in accordance with
“UL 94V-0”;
UL file number E45329(R)
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
54.5 max.
50.1 min.
0
35.9
−0.2
+0.3
17 0
57.2 max.
0
35.2
−0.3
32.7 min.
5.08
0
∅19.2 −0.3
handbook, full pagewidth
40.6
max.
4
5.08
45.72
Dimensions in mm.
1.6
+0.15
0
0.8
40.64
5.08
CBW277
Fig.2 ETD49/25/16 coil former; 20-pins.
Winding data and area product for 20-pins ETD49/25/16 coil former
NUMBER OF
SECTIONS
1
Note
1. Also available with
∅1.0
mm pins.
WINDING
AREA
(mm
2
)
273
MINIMUM
WINDING
WIDTH
(mm)
32.7
AVERAGE
LENGTH OF
TURN
(mm)
85
AREA
PRODUCT
Ae x Aw
(mm
4
)
57600
TYPE NUMBER
CPH-ETD49-1S-20P
(1)
2008 Sep 01
3
Ferroxcube
ETD cores and accessories
MOUNTING PARTS
General data
ITEM
Mounting clip
REMARKS
material: stainless steel
FIGURE
3
ETD49/25/16
TYPE NUMBER
CLI-ETD49
10.8
handbook, halfpage
33.5
53.3
min.
CBW593
0.4
16.5
Dimensions in mm.
Fig.3 Mounting clip for ETD49/25/16.
2008 Sep 01
4
Ferroxcube
ETD cores and accessories
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
Preliminary
specification
Product specification
PRODUCT
STATUS
Development
DEFINITIONS
ETD49/25/16
This data sheet contains preliminary data. Ferroxcube reserves the right to
make changes at any time without notice in order to improve design and
supply the best possible product.
This data sheet contains final specifications. Ferroxcube reserves the right
to make changes at any time without notice in order to improve design and
supply the best possible product.
Production
DISCLAIMER
Life support applications
These products are not designed for use in life support appliances, devices, or systems
where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube
for any damages resulting from such application.
PRODUCT STATUS DEFINITIONS
STATUS
Prototype
Design-in
Preferred
Support
INDICATION
DEFINITION
These are products that have been made as development samples for the purposes of
technical evaluation only. The data for these types is provisional and is subject to
change.
These products are recommended for new designs.
These products are recommended for use in current designs and are available via our
sales channels.
These products are
not
recommended for new designs and may not be available
through all of our sales channels. Customers are advised to check for availability.
2008 Sep 01
5
