EMC Question of the Week: January 4, 2021

Electrical Fast Transient Waveform

EFT/B is an acronym used to describe one form of electrical fast transient testing. The "B" in this acronym stands for

  1. buck
  2. back
  3. burst
  4. Class B


The correct answer is “c.” EFT test standards generally specify the application of transients in bursts. For example, IEC 61000-4-4 specifies bursts consisting of 75 transients occurring every 300 milliseconds. Each burst lasts 15 milliseconds or less.

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