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EER50 Datasheet Preview

EER50 Datasheet

EER Cores

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EER42,ETD-core,EER-core,EER40,EER20,EER35,EER cores,EER28,EER30,EER34,EER43,EER45,EER50,ETD cores,
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EER CORES
ETD CORES
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Description of the “E” patterns
The "E" patterns are sought that are easy to assemble, could be interleave to minimize gap effects, and would
minimize waste. Since “E” cores have two open coil sides, they provide substantial room to bring high current
lead wires out from the coil. It is easier to achieve high voltage electrical isolation with an “E” core. In the typical
“E” lamination, the center leg (one of three legs) is twice the width of either outer leg. In theory, magnetic flux
flowing out of the center leg divides equally and flows into the outer two "E" core legs. Since the outer legs
handle half the flux they only need to have half the cross-section that the center leg has. It is easier to achieve
high voltage electrical isolation with an “E” core than with a pot core.
Presentation of EER-core and ETD-core
EER-core and ETD-core are examples of type “E” cores with round center legs. The combined cross section of the
two outer legs of EER cores and ETD cores should equal or exceed that of the center leg. The core stack is a
stack of laminations and the typical stack has core legs of rectangular cross-section. Typically the inductor or
transformer coil is placed over the center core leg. To minimize winding resistance (hence also minimize winding
losses) it is desirable to have a round center leg. A round center leg also eliminates the sharp bend encountered
when winding wire around a rectangular leg; consequently a round center leg permits use of larger wire.
Achieving round center legs with laminations is possible but very impractical. With the development of powdered
cores and ferrite cores it became practical to have a round center leg. EER-core and ETD-core type, such as
EER42, EER40, EER20, EER35, EER28, EER30, EER34, EER43, EER45, EER50, etc, ferrite cores are developed for
higher power higher frequency switching transformers.
Application of EER-core and ETD-core
EER cores and ETD cores are usually larger, but have a wide winding area, which makes them particularly good
for higher power designs or multiple output designs. Remember a larger core size will be needed for a margin
wound type transformer than for a triple insulated type to allow room for the margins. EER cores with round
center leg offer ideal features for the design of SMPS transformers chokes. We offer various EER cores and ETD
cores, including EER42, EER40, EER20, EER35, EER28, EER30, EER34, EER43, EER45, EER50, EER49, EER25.5,
EER55, EER54, EER53, ETD29, ETD34, ETD39, ETD49, ETD44, ETD10, ETD41, ETD32, ETD59, ETD31, and
ETD22. Please find our details of ETD-core and EER-core by types and dimensions data shown as below.
Type
EER25
EER28A
EER28B
ETD29
EER30
ETD34
EER35A
EER35/34B
EER35C
EER37
ETD39
EER40A
EER40B
EER40C
EER40D
EER40E
EER40F
EER40G
EER40H
A
25.3±0.6
28.5±0.6
28.5±0.6
29.8±0.8
30.0 ± 0.8
34.2 ± 0.8
35.0 ± 0.7
35.0 ± 0.7
36.0 ± 0.7
36.0 ± 0.6
39.1 ± 0.9
40.0 ± 0.8
44.0 ± 0.8
40.0± 0.7
40.2± 0.5
40.0 +0.6
-0.5
41.0max
40.8 +0.1
-0.5
41.0±0.7
B
9.3±0.3
14.0 ± 0.3
16.9 ± 0.3
15.8 ± 0.2
17.5 ± 0.3
17.3 ± 0.2
21.0 ± 0.3
16.8 ± 0.3
21.6 ± 0.4
20.7 ± 0.3
19.8 ± 0.2
22.4 ± 0.3
22.4 ± 0.3
22.9 ± 0.3
21.4± 0.3
23.0± 0.3
22.8±0.3
21.3±0.2
24.0 + 0.3
-0
Dimensions(mm)
CD
7.5 ± 0.3
7.5 ± 0.3
11.4 ± 0.3
9.9±0.3
11.4 ± 0.3
9.9 ± 0.3
9.5 ± 0.3
9.5 ± 0.3
11.2 ± 0.3
9.9 ± 0.3
10.8 ± 0.3
10.8 ± 0.3
11.3 ± 0.4
11.3 ± 0.3
11.3 ± 0.4
11.3 ± 0.3
11.3 ± 0.4
11.3 ± 0.4
11.3 ± 0.3
11.3 ± 0.3
12.6 ± 0.4
12.5 ± 0.3
13.3 ± 0.3
13.3 ± 0.3
13.3 ± 0.3
13.3 ± 0.3
13.3 ± 0.3
13.3 ± 0.3
15.5± 0.3
15.5± 0.3
13.3± 0.3
13.3± 0.3
13.3±0.4
13.3±0.3
15.0±0.2
14.0±0.25
13.0 +0
-0.3
13.0 +0
-0.3
E
19.8
21.2
21.2
22.0
22.5
25.6
25.3
25.3
26.5
27.6
29.3
29.0
29.3
29.5
29.4
29.0
29.5
30.7
30.0
EER49A
49.0 ±0.8
26.2 ±0.4
17.0 ±0.5
17.0 ±0.5
36.5
EER49B
ETD49
EER50
EER53
EER54
EER55A
EER55B
49.0 ±1.0
49.0 ±1.0
50.5 ±0.8
53.2 ±0.8
54.2 ±0.8
56.0 ±0.8
55.9 ±1.0
27.0 ±0.3
24.7 ±0.3
27.0 ±0.3
23.2 ±0.3
25.1 ±0.4
30.7 ±0.3
29.0 ±0.3
17.2 ±0.4
16.3 ±0.4
18.7 ±0.4
21.5 ±0.3
18.9 ±0.4
20.4 ±0.3
24.3 ±0.5
17.2 ±0.3
16.3 ±0.4
18.7 ±0.4
20.0 +0.2
-0.3
18.9 ±0.3
20.4 ±0.3
20.2 ±0.3
36.5
36.1
38.0
38.7
40.5
44.0
43.5
F
6.2 ± 0.3
9.6±0.3
12.5 ± 0.3
11.0 ± 0.3
12.6 ± 0.3
12.1 ± 0.3
15.0 ± 0.3
10.8 ± 0.3
15.6 ± 0.4
14.7 ± 0.3
14.6 ± 0.4
15.4 ± 0.3
15.4 ± 0.3
15.9 ± 0.3
15.4± 0.3
16.0± 0.3
15.8±0.3
15.3±0.2
17.0 +0.3
-0
18.7 +0.3
-0.2
18.7 ±0.3
18.1 ±0.4
18.7 ±0.3
16.3 ±0.3
17.5±0.3
22.9±0.3
20.4±0.3




Yuxiang

EER50 Datasheet Preview

EER50 Datasheet

EER Cores

No Preview Available !

EER42,ETD-core,EER-core,EER40,EER20,EER35,EER cores,EER28,EER30,EER34,EER43,EER45,EER50,ETD cores,
EER49A
EER49B
www.datasheet4u.com ETD49
EER50
EER53
EER54
EER55A
EER55B
49.0 ±0.8
49.0 ±1.0
49.0 ±1.0
50.5 ±0.8
53.2 ±0.8
54.2 ±0.8
56.0 ±0.8
55.9 ±1.0
26.2 ±0.4
27.0 ±0.3
24.7 ±0.3
27.0 ±0.3
23.2 ±0.3
25.1 ±0.4
30.7 ±0.3
29.0 ±0.3
17.0 ±0.5
17.2 ±0.4
16.3 ±0.4
18.7 ±0.4
21.5 ±0.3
18.9 ±0.4
20.4 ±0.3
24.3 ±0.5
17.0 ±0.5
17.2 ±0.3
16.3 ±0.4
18.7 ±0.4
20.0 +0.2
-0.3
18.9 ±0.3
20.4 ±0.3
20.2 ±0.3
36.5
36.5
36.1
38.0
38.7
40.5
44.0
43.5
18.7 +0.3
-0.2
18.7 ±0.3
18.1 ±0.4
18.7 ±0.3
16.3 ±0.3
17.5±0.3
22.9±0.3
20.4±0.3
Type
Core parameter
weight (g/pr.)
AL(nH/N2 )
C1 (mm-1) Ae (mm2 ) Ie (mm) Ve (mm3 )
F2B (±25%) F2BD (± 25%) F2B1 ( ±25%)
EER25
1.09
44.3
48.3
2140
12
2100
2050
1920
EER28A
0.79
82.1
64 5254
28
3120
3080
2870
EE28B
0.86
85.6
73.2
6266
33
2100
2660
2520
ETD29
0.95
73.6
70.6
5196
28
2500
2100
2200
EER30
0.99
85.5
75.4
6673
32
2800
2600
2500
ETD34
0.81
97.1
78.6
7632
40
2600
2450
2400
EER35A
0.84
107
90.8
9716
53
2960
2580
2600
EER35/34B 0.68
107
72.8
7790
51
3100
2770
2770
EER35C
0.84
107
90 9630
55
3100
2700
2700
EER37
0.8
112.1
90.5
10149
52.5
2960
2580
2600
ETD39
0.737
125
92.1
1151
60
3240
2800
2700
EER40A
0.66
149
98 14602
78
/
3500
3500
EER40B
0.68
149 102 15198
78
/
3500
3500
EER40C
0.67
149 100 14900
78
/
3400
3400
EER40D
0.50
187.7
93.9
17415
78
3830
3800
3300
EER40E
0.65
151
98.2
14828
77
/
3300
3300
EER40F
0.65
151
98.1
15215
78
/
3300
3300
EER40G
0.609
158
96.3
15230
80
/
3600
3600
EER40H
0.7
145
102.8
14906
80
/
3200
3200
EER42A
0.547
183
96.3
17623
94
/
4500
4500
EER42B
0.528
183.7
96.9
17800
92
/
4400
4400
EER42/C
0.5
155.3
97.5
15137
96
/
3500
3400
EER43A
0.5
194
98.0
19821
105
/
4500
4500
EER43B
0.5
194
96.8
19584
102
/
4500
4500
ETD44
0.59
173.0
103.0
17720
94
/
4110
4000
EER45
0.6
189.5
105.0
19894
108
/
5000
4670
EER49A
0.5
235.8
116.0
27357
112
/
6800
6250
EER49B
0.5
241 118 28460
148
3500
6500
6030
ETD49
0.534
217.6
112.2
24417
124
3700
3700
4400
EER50
0.437
277.5
117.6
32637
170
/
5730
5300
EER53
0.338
319.5
105.9
33828
170
/
6200
6200
EER54
1.0
594.1
48.7 28958.2
181
/
4800
4800
EER55A
0.62
303.1
188.2 41896.1
220
/ 7100
EER55B
0.36
353.8
128.7
45533
228
/
Copyright 2005 YUXIANG Magnetic Materials Ind. Co.,Ltd.All Rights Reserved.
Add:16F1,jinyuan building,NO.57,hubin S.Rd.,Xiamen,China.361004
Tel : (86)592 2225286 (86)592 2219816 (86)592 2217138 Fax: (86)592 2207122
Email : yingli@magnets.com.cn yuxiang@sohu.net


Part Number EER50
Description EER Cores
Maker Yuxiang
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EER50 Datasheet PDF





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