Ion cannon

Ion cannons were a form of armament that fired ionized plasma bolts capable of disrupting electronic systems. Larger types could even disable a large capital ship, such as the experimental ultra-heavy ion pulse cannons that were mounted on the flanks of the Malevolence, or the v-150 planetary ion cannon used by the Alliance to Restore the Republic. During the Battle of Atollon, continued fire from several planetary ion cannons dealt a considerable amount of damage to the hull of at least one Vindicator-class heavy cruiser.
The Eta-2 Actis-class light interceptor featured light ion cannons that were capable of disabling Vulture droids with ease, often causing them to critically overload and explode.
Y-wing bombers were also equipped with ion cannons, most notably those used by the Alliance's Gold Squadron. Though their field of fire was somewhat limited, the ion cannons were quite powerful, with three blasts being sufficient to disable a Victory-class frigate and only one to completely disable a TIE/D Defender starfighter.