> 5.1 | Spark Gaps

> The most common way to provide ESD protection is to use spark gaps, as for example applied to the antenna interfaces of Siemens GSM modules.
> Spark gaps should be located close to the possible place of flashover. One tip must be connected to the ground plane, the other one to the point to be protected.
> Advantages: Low cost, if included in the layout.
> Disadvantages: Value of the ignition voltage is fuzzy.
> Figure 29: Spark gap