Skin effect of metallic conductors is well documented.

What about SMD resistors? High values Vs low values? Above what frequencies would this be an issue?


1 Answer 1


Skin effect is well-documented and that good documentation, I believe, tells you exactly what you need to know; As a conductor's DC resistance increases, then skin effects are less noticeable. Extract from wiki: -

In a good conductor, skin depth is proportional to square root of the resistivity. This means that better conductors have a reduced skin depth. The overall resistance of the better conductor remains lower even with the reduced skin depth. However the better conductor will show a higher ratio between its AC and DC resistance, when compared with a conductor of higher resistivity. For example, at 60 Hz, a 2000 MCM (1000 square millimetre) copper conductor has 23% more resistance than it does at DC. The same size conductor in aluminum has only 10% more resistance with 60 Hz AC than it does with DC.[9]

  • \$\begingroup\$ And, I'm pleased to announce that the phantom downvoter has struck again. Yippee! \$\endgroup\$
    – Andy aka
    Jun 6, 2019 at 8:47
  • \$\begingroup\$ +1 for stating that skin effect is more pronounced for good conducters .So does this mean that resistors should be not too bad in this respect ? \$\endgroup\$
    – Autistic
    Jun 6, 2019 at 10:06
  • 2
    \$\begingroup\$ Resistors above a few ohms should barely have any noticeable skin effects especially if the resistors are smaller than the predicted skin thickness. \$\endgroup\$
    – Andy aka
    Jun 6, 2019 at 10:26
  • 1
    \$\begingroup\$ @Andyaka Welcome to the stack exchange sites, where your questions (and answers!) are down-voted before you've even finished typing! \$\endgroup\$ Jun 6, 2019 at 14:10

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