t
μ0 ρ γ K f Δ d R ac /R d
c
100 ℃ 1.2566E-06 H/m 2.3121E-08 Ω ·m 43249882.9 1/(Ω ·m) 1 100000
<=== Pls. Enter Temp. &
0.00426439
℃
Explanation:
ρ ρ ρ ρ ρ ρ ρ ρ ρ ρ
《Skin Effect Depth Calculation at Different Temperature & Frequ
Copper Resistivity ρ t =ρ 0 (1+0.0041t)
Temp. coeff. of
Temp. Permeability Resistivity Conductivity Constant Frequency Depth Diameter AC and DC RES Ratio
0
1.58263E-08 Ω·m 1.65332E-08 Ω·m 1.724E-08 Ω·m 1.76076E-08 Ω·m 1.79752E-08 Ω·m 1.87104E-08 Ω·m 1.98131E-08 Ω·m 2.01807E-08 Ω·m 2.16511E-08 Ω·m 2.31214E-08 Ω·m

电流（15-20A以上）情况下，一般不用利兹线，而用铜箔，将铜箔切割成骨架的宽度，
度可以比开关频率时的穿透深度大37%，铜箔之间需要绝缘。
关电源中大部分电流波形为矩形波，其中包含有丰富的高次谐波，各谐波穿透深度和交流电阻互不相同。
形波电流的穿透深度为基波正弦波穿透深度的70%。
1. When AC Res is significantl
we need to consider the im
10
20
Hz
2. Liz line used in 50kHz or l
25
0.242 mm 0.484 mm 1
3. 大电流（15-20A以上）情况下，
厚度可以比开关频率时的穿透
30
4. 开关电源中大部分电流波形为矩
40
5. 矩形波电流的穿透深度为基波正
55
60
80

2k
100

erature & Frequency 》——by Harry xie, tinghai899220@
Pls. Enter Temp. & Freq. Value in Yellow Box.
anation:
n AC Res is significantly larger than DC Res and maximum ripple current percentage is greater than 20%, need to consider the impact brought by the AC Res. line used in 50kHz or less, not in 100kHz or more.