|
The U core in #77 material offers an economical core design with
a nearly uniform cross-sectional area.
They are frequently used in output chokes, power input filters and transformers
for switched-mode power supplies and HF florescent ballasts.
The part number is for a single core. These U cores have the same minimum
cross-sectional area as the listed effected cross-sectional area.
(physical dimension graphics)
|
Part Number
|
Fig.
|
A
|
B
|
C
|
D Min.
|
E Min.
|
F
|
Weight (g)
|
|
UA-77-02002
|
1
|
.340
|
.180
|
.160
|
.051
|
.090
|
|
.7
|
|
UA-77-26002
|
1
|
1.000
|
.500
|
.250
|
.244
|
.490
|
|
7.2
|
|
UA-77-27002
|
1
|
1.000
|
.525
|
.250
|
.270
|
.490
|
|
7.8
|
|
UA-77-25002
|
1
|
1.000
|
.625
|
.250
|
.370
|
.490
|
|
8.7
|
|
UA-77-24002
|
1
|
1.000
|
.750
|
.250
|
.494
|
.490
|
|
9.6
|
|
UB-77-22002
|
2
|
1.045
|
.500
|
.385
|
.270
|
.285
|
|
10.6
|
|
UB-77-23002
|
2
|
1.045
|
.625
|
.385
|
.394
|
.285
|
|
12.1
|
|
UB-77-02002
|
2
|
1.045
|
.795
|
.385
|
.565
|
.285
|
|
14.8
|
|
UB-77-01002
|
2
|
1.045
|
1.000
|
.385
|
.770
|
.285
|
|
17.9
|
|
UC-77-24002
|
3
|
1.237
|
.729
|
.394
|
.370
|
.492
|
1.047
|
16.2
|
|
UC-77-15002
|
3
|
1.237
|
1.024
|
.394
|
.665
|
.492
|
1.047
|
21.3
|
|
UC-77-08002
|
3
|
1.620
|
.987
|
.460
|
.370
|
.735
|
1.390
|
24.5
|
|
UC-77-09002
|
3
|
1.620
|
.750
|
.460
|
.370
|
.735
|
1.390
|
26.0
|
|
UC-77-10002
|
3
|
1.620
|
.812
|
.460
|
.431
|
.735
|
1.390
|
27.0
|
|
UC-77-11002
|
3
|
1.620
|
.875
|
.460
|
.494
|
.735
|
1.390
|
29.0
|
|
UC-77-12002
|
3
|
1.620
|
1.000
|
.460
|
.620
|
.735
|
1.390
|
33.0
|
|
UA-77-14002
|
1
|
4.000
|
2.250
|
1.000
|
1.220
|
1.940
|
|
550
|
Magnetic Parameters
|
Part Number
|
El/A (cm-1)
|
le (cm)
|
Ae (cm2)
|
Ve (cm3)
|
AL (mH +/- 25%
|
|
77
|
|
UA-77-02002
|
16.8
|
2.08
|
.124
|
.257
|
926
|
|
UA-77-26002
|
17.6
|
7.1
|
.40
|
2.85
|
1245
|
|
UA-77-27002
|
18.2
|
7.3
|
.40
|
2.95
|
1220
|
|
UA-77-25002
|
20.7
|
8.4
|
.40
|
3.36
|
1048
|
|
UA-77-24002
|
23.9
|
9.6
|
.40
|
3.88
|
920
|
|
UB-77-22002
|
9.95
|
6.6
|
.66
|
4.3
|
2095
|
|
UB-77-23002
|
11.6
|
7.8
|
.67
|
5.2
|
1845
|
|
UB-77-02002
|
13.9
|
9.5
|
.68
|
6.5
|
1570
|
|
UB-77-01002
|
16.8
|
11.6
|
.69
|
8.0
|
1345
|
|
UC-77-24002
|
11.2
|
9.3
|
.83
|
7.7
|
1900
|
|
UC-77-15002
|
15.0
|
12.3
|
.82
|
10.1
|
1445
|
|
UC-77-08002
|
10.5
|
10.3
|
.98
|
10.1
|
2095
|
|
UC-77-09002
|
11.2
|
11.0
|
.98
|
10.7
|
1995
|
|
UC-77-10002
|
11.8
|
11.6
|
.98
|
11.3
|
1898
|
|
UC-77-11002
|
12.4
|
12.2
|
.98
|
12.0
|
1823
|
|
UC-77-12002
|
13.8
|
13.5
|
.98
|
13.2
|
1670
|
|
UC-77-14002
|
4.88
|
31.5
|
6.5
|
198
|
3930 Min.
|
|
