Chokes
Drum Core Inductor
CBP1251
The CBP1251 series Inductors are wound on “Drum” style ferrite cores
and are ideal for use as Input/Output filter Inductors in Switch Mode
Power Supplies.
•
•
•
•
•
High DC levels.
Compact size.
Low loss Ferrite material.
Cost effective.
Available with heat shrink vinyl cover.
• Other applications include:
Line Filters, Speaker
Crossover Networks, SCR
and Triac Controls etc.
MECHANICAL
Dimensions, Inches (mm)
A
0.66
B
0.84
C
Hole to clear
No. 4/40 screw
E
See Electrical
Specs. table.
ELECTRICAL SPECIFICATION
Part No.
Ind. (1) Max DCR I DC (2) I Rated (3)
E
± 10% (µH)
(Ω)
(Amp) DC (Amp) RMS (Nom.)
1.0
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10.2
12.0
15.0
18.0
22.0
27.0
33.0
39.0
0.003
0.003
0.004
0.004
0.005
0.005
0.005
0.006
0.007
0.007
0.008
0.009
0.010
0.011
0.015
0.016
0.020
0.030
0.040
0.046
87.0
68.0
56.0
56.0
47.0
47.0
40.0
36.0
32.0
29.0
26.0
24.5
21.2
19.0
17.5
16.5
15.8
14.4
13.2
11.8
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
7.2
7.2
5.5
4.5
4.0
4.0
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.55
0.50
0.50
0.50
0.50
0.41
0.47
Part No.
CBP1251-470
CBP1251-560
CBP1251-680
CBP1251-820
CBP1251-101
CBP1251-121
CBP1251-151
CBP1251-181
CBP1251-221
CBP1251-271
CBP1251-331
CBP1251-391
CBP1251-471
CBP1251-561
Ind. (1) Max DCR I DC (2) I Rated (3)
E
± 10% (µH)
(Ω)
(Amp) DC (Amp) RMS (Nom.)
47.0
56.0
68.0
82.0
100.0
120.0
150.0
180.0
220.0
270.0
330.0
390.0
470.0
560.0
0.062
0.069
0.077
0.083
0.095
0.013
0.081
0.217
0.240
0.300
0.336
0.460
0.636
0.696
11.0
10.0
8.9
8.2
7.5
5.8
5.6
5.1
4.3
4.1
3.8
3.3
3.2
2.9
2.8
2.8
2.8
2.8
2.8
2.0
1.6
1.6
1.6
1.6
1.3
1.0
0.8
0.8
0.47
0.48
0.50
0.50
0.50
0.48
0.48
0.48
0.48
0.48
0.48
0.48
0.45
0.45
CBP1251-10G
CBP1251-12G
CBP1251-15G
CBP1251-18G
CBP1251-22G
CBP1251-27G
CBP1251-33G
CBP1251-39G
CBP1251-47G
CBP1251-56G
CBP1251-68G
CBP1251-82G
91/04/15
CBP1251
CBP1251-110
CBP1251-120
CBP1251-150
CBP1251-180
CBP1251-220
CBP1251-270
CBP1251-330
CBP1251-390
ISSUE A
NOTES
1) Tolerances on values below 10 µH are ± 20%.
2) I
DC
is the current for which the Inductance is reduced by appr. %5 of
its initial value.
3) I
RATED
is the current (RMS), limited by the copper loss and the
guage of the wire in the winding.
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