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Helical coils

Flat Helical windings are popular in application where a high stacking ratio is required. It has good thermal properties and low skin effects in high frequency applications due to large surface area and shallow skin depth. It is commonly used in high current inductors, common mode chokes, differential mode chokes, power factor correction inductors and transformers. Other application includes motor windings, etc.
helical coils
Helical coil CPH4 - dimensions ±20%
OD - output diameter17,0 mm
ID - input diameter9,2 mm
T - wire thickness (with isolation)1,1 mm
W - wire width (with isolation)4,1 mm
a - soldered leadout2 mm
b - unsoldered leadout5 mm
IndexNumber of turnsLength H ±20%Inductance
(f=500kHz) ±10%
Imax.RDC ±20%
CPH4x2,52,53,7 mm80 nH40 A0,4 mΩ
CPH4x3,53,55,0 mm130 nH40 A0,56 mΩ
CPH4x4,54,56,1 mm190 nH40 A0,74 mΩ
CPH4x5,55,57,4 mm240 nH40 A0,95 mΩ
CPH4x6,56,58,5 mm310 nH40 A1,13 mΩ
CPH4x7,57,59,8 mm370 nH40 A1,32 mΩ
CPH4x8,58,510,4 mm450 nH40 A1,52 mΩ
CPH4x9,59,511,7 mm520 nH40 A1,71 mΩ
CPH4x10,510,512,9 mm600 nH40 A1,95 mΩ
CPH4x11,511,514,0 mm660 nH40 A2,13 mΩ
CPH4x12,512,515,5 mm730 nH40 A2,36 mΩ
CPH4x13,513,516,7 mm800 nH40 A2,53 mΩ
CPH4x14,514,517,4 mm880 nH40 A2,77 mΩ
CPH4x15,515,518,6 mm960 nH40 A3,0 mΩ
CPH4x16,516,519,6 mm1040 nH40 A3,2 mΩ

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