Atornillador electrico

#1

Buen dia

Estoy implementando un nuevo proceso de tornillado, que tiene contacto con PCB y componentes ESDS la pregunta es la siguiente:
1.Tendria que incluir en el plan de verificaion estos torques? Ya que la norma no menciona dicha medicion.
2. De ser incluida, Cuales serian las especificaciones y equipos?

Saludos, su respuesta nos sera de mucha ayuda.

#2

Hello AlissandroR,

The torque of the screwdrive does not have to be reported in the ESD control plan. What may need to be investigated is:

  • Does the tip come into contact with ESD sensitive items on the PCB. If the screws go into the ground plane they may not be considered ESD senstive.
  • Is the the tip grounded or have a resistance to ground of less than 1x10*9 ohms.
  • If the tip is conductive and has a resistance to ground greater that 1x10*9 ohms, is the voltage on the tip less than 35 volts.

If any of these conditions are met, then it meets the requirements in ANSI/ESD S20.20.

John