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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 CPH3 - dimensions ±20%
OD - output diameter15,0 mm
ID - input diameter8,8 mm
T - wire thickness (with isolation)1,1 mm
W - wire width (with isolation)3,1 mm
a - soldered leadout3 mm
b - unsoldered leadout4 mm
IndexNumber of turnsLength H ±20%Inductance
(f=500kHz) ±10%
Imax.RDC±20%
CPH3x1,51,52,6mm40 nH30 A0,43mΩ
CPH3x2,52,53,7mm80 nH30 A0,68mΩ
CPH3x3,53,55,0mm120 nH30 A0,93mΩ
CPH3x4,54,56,2mm180 nH30 A1,10mΩ
CPH3x5,55,57,3mm230 nH30 A1,33mΩ
CPH3x6,56,58,5mm290 nH30 A1,53mΩ
CPH3x7,57,59,6mm350 nH30 A1,76mΩ
CPH3x8,58,510,8mm410 nH30 A2,0mΩ
CPH3x9,59,512,0mm470 nH30 A2,24mΩ
CPH3x10,510,513,0mm540 nH30 A2,43mΩ
CPH3x11,511,514,3mm610 nH30 A2,68mΩ
CPH3x12,512,515,7mm670 nH30 A2,93mΩ
CPH3x13,513,516,8mm740 nH30 A3,14mΩ
CPH3x14,514,518,0mm800 nH30 A3,32mΩ

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