Understanding Static Charge on Circuit Boards: Magnitude & Human Touch

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SUMMARY

The magnitude of the static charge induced on a circuit board when a human touches it is approximately determined by the parasitic capacitance and the voltage of the static discharge. Assuming a few picofarads (pF) of capacitance and a few kilovolts (kV) of voltage, the charge can be calculated using the formula Q = C × V, where Q is the charge, C is the capacitance, and V is the voltage. This relationship is crucial for understanding electrostatic discharge (ESD) effects on electronic components.

PREREQUISITES
  • Understanding of electrostatic discharge (ESD) principles
  • Familiarity with capacitance and voltage concepts
  • Basic knowledge of circuit board design
  • Proficiency in using the formula Q = C × V
NEXT STEPS
  • Research the effects of electrostatic discharge on electronic components
  • Learn about ESD protection techniques for circuit boards
  • Explore the relationship between capacitance and voltage in circuit design
  • Study the impact of parasitic capacitance in PCB layouts
USEFUL FOR

Electrical engineers, circuit designers, and anyone involved in the manufacturing or maintenance of electronic devices will benefit from this discussion on static charge and its implications for circuit boards.

Asad Raza
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What is the magnitude of the static charge induced on a circuit board when a human touches it? I mean approximately.
 
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Asad Raza said:
What is the magnitude of the static charge induced on a circuit board when a human touches it? I mean approximately.

hi there
you have given your topic an I level indicating you have undergrad university study level
what have you done so far researching this topic ?

there is masses of info on the netDave
 
Asad Raza said:
What is the magnitude of the static charge induced on a circuit board when a human touches it? I mean approximately.
Assume a few pF of parasitic capacitance and a few kV of voltage induced by the static discharge from the human to the PCB. Do you know the equation for the charge in terms of the capacitance and the voltage? :smile:
 

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