The SUD or Sepratist Utilty Droid was used during the Clone Wars.
About this creation
Model: UD 235
Creator: Trade Federation
Weapons and extra Items/Parts: Light armour, concealed light repeating blaster(2), concealed grenade launcher an 5 litres of a special liquid explosive ,Fragrosi ,for the the self-destruct feature.
The SUD was used mostly on Geonosis by CIS Commanders and Generals. The SUD had a built in self-destruct feature which basicly means:
When the SUD is captured it fires its missile like Brain Box into the sky and then blows up everything in a 20 metre radius.