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