Ion grenade
From Wookieepedia, the Star Wars wiki.
Ion grenades were electronic disruption hand grenades used around 4000 BBY in the Old Republic era.
Upon impact, the ion grenade triggered an ion burst with a three meter radius capable of disabling droids, automated turrets or other electronic devices.
Revan and the Jedi Exile were known to use them on their travels. Some Sith troopers were also known to use them.
