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.
• Other applications include:
Line Filters, Speaker
• Low loss Ferrite material.
• Cost effective.
Crossover Networks, SCR
and Triac Controls etc.
• Available with heat shrink vinyl cover.
MECHANICAL
Dimensions, Inches (mm)
A
B
C
E
0.66
0.84
Hole to clear
No. 4/40 screw
See Electrical
Specs. table.
ELECTRICAL SPECIFICATION
(1)
10% (µH)
(2)
(3)
(1)
10% (µH)
(2)
(3)
Ind.
Max DCR I DC
I Rated
E
Ind.
Max DCR I DC
I Rated
E
Part No.
(Ω)
(Amp) DC (Amp) RMS (Nom.)
Part No.
(Ω)
(Amp) DC (Amp) RMS (Nom.)
CBP1251-10G
CBP1251-12G
CBP1251-15G
CBP1251-18G
1.0
1.2
1.5
1.8
0.003
0.003
0.004
0.004
87.0
68.0
56.0
56.0
9.0
9.0
9.0
9.0
0.55
0.55
0.55
0.55
CBP1251-470
CBP1251-560
CBP1251-680
CBP1251-820
47.0
56.0
68.0
82.0
0.062
0.069
0.077
0.083
11.0
10.0
8.9
2.8
2.8
2.8
2.8
0.47
0.48
0.50
0.50
8.2
CBP1251-22G
CBP1251-27G
CBP1251-33G
CBP1251-39G
2.2
2.7
3.3
3.9
0.005
0.005
0.005
0.006
47.0
47.0
40.0
36.0
9.0
9.0
9.0
9.0
0.55
0.55
0.55
0.55
CBP1251-101 100.0
CBP1251-121 120.0
CBP1251-151 150.0
CBP1251-181 180.0
0.095
0.013
0.081
0.217
7.5
5.8
5.6
5.1
2.8
2.0
1.6
1.6
0.50
0.48
0.48
0.48
CBP1251-47G
CBP1251-56G
CBP1251-68G
CBP1251-82G
4.7
5.6
6.8
8.2
0.007
0.007
0.008
0.009
32.0
29.0
26.0
24.5
9.0
9.0
9.0
9.0
0.55
0.55
0.55
0.55
CBP1251-221 220.0
CBP1251-271 270.0
CBP1251-331 330.0
CBP1251-391 390.0
0.240
0.300
0.336
0.460
4.3
4.1
3.8
3.3
1.6
1.6
1.3
1.0
0.48
0.48
0.48
0.48
CBP1251-110
CBP1251-120
CBP1251-150
CBP1251-180
10.2
12.0
15.0
18.0
0.010
0.011
0.015
0.016
21.2
19.0
17.5
16.5
9.0
9.0
7.2
7.2
0.55
0.55
0.50
0.50
CBP1251-471 470.0
CBP1251-561 560.0
0.636
0.696
3.2
2.9
0.8
0.8
0.45
0.45
CBP1251-220
CBP1251-270
CBP1251-330
CBP1251-390
22.0
27.0
33.0
39.0
0.020
0.030
0.040
0.046
15.8
14.4
13.2
11.8
5.5
4.5
4.0
4.0
0.50
0.50
0.41
0.47
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.
229 Colonnade Road, Nepean, Ontario, Canada K2E 7K3
Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com
An ISO 9001 Registered Company
31-1