FERRITE
'E' CORES
|
E-Cores are available in the 77 (stocking) and J (non-stocking) Material.
|
Type 77 Ferrite Material
permeability 2000
These are ideally suited for low power applications up to 200 watts.
A nylon bobbin is supplied for easy winding. Please see section IV on "Toroid
Mounts & E-Core Bobbins" for more information on different types
of E-Core Bobbins.
|
|
|
E-Core Physical Dimensions (inches)
|
  |
|
Part No.
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
Power
|
|
EA-77-188
|
.760
|
.318
|
.187
|
.225
|
.093
|
.192
|
.187
|
10 watts
|
|
EA-77-250
|
1.000
|
.380
|
.250
|
.255
|
.125
|
.250
|
.250
|
20 watts
|
|
EA-77-375
|
1.375
|
.562
|
.375
|
.375
|
.187
|
.312
|
.375
|
70 watts
|
|
EA-77-500
|
1.625
|
.650
|
.500
|
.405
|
.250
|
.312
|
.500
|
100 watts
|
|
EA-77-625
|
1.680
|
.825
|
.605
|
.593
|
.234
|
.375
|
.468
|
200 watts
|
|
E-Core Magnetic Properties
|
|
Part No.
|
Ae
mm2
|
le
mm
|
Ve
mm3
|
As
mm2
|
AW
mm2
|
ACxAW
mm4
|
AL value
mh/1000 turns
|
|
E-77-188
|
22.5
|
40.1
|
900
|
1050
|
55.7
|
1250
|
1060
|
|
E-77-250
|
40.4
|
48.0
|
1930
|
1700
|
80.6
|
3250
|
1660
|
|
E-77-375
|
90.3
|
68.8
|
6240
|
3630
|
151.0
|
13700
|
2760
|
|
E-77-500
|
160.0
|
76.7
|
12300
|
5410
|
163.0
|
26100
|
4470
|
|
E-77-625
|
184.0
|
98.0
|
18000
|
7550
|
287.0
|
52900
|
5300
|
|
Wire Size vs. Number of Turns
|
|
wire size>
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
34
|
36
|
38
|
|
EA-77-188
|
21
|
33
|
50
|
79
|
125
|
196
|
293
|
439
|
669
|
1046
|
1548
|
|
EA-77-250
|
34
|
62
|
93
|
147
|
232
|
364
|
532
|
814
|
1240
|
1938
|
--
|
|
EA-77-375
|
63
|
94
|
149
|
235
|
372
|
582
|
868
|
1302
|
1984
|
--
|
--
|
|
EA-77-500
|
50
|
141
|
212
|
335
|
532
|
829
|
1236
|
1855
|
--
|
--
|
--
|
|
EA-77-625
|
159
|
250
|
375
|
593
|
939
|
1470
|
2191
|
--
|
--
|
--
|
--
|
|
353 West Grove Avenue, Orange, CA 92865, U.S.A
800-679-3184
© 1996 - 2002 CWS ByteMark
All Rights Reserved