Micro-charge
A micro-charge were a type of explosive charge used by Starfleet and possessed by Ferengi merchant Ulis, during the mid-22nd century. ()

In 2151, Lieutenant Malcolm Reed of  suggested using two micro-charges to blow open the airlock of an Axanar cargo ship. ()

In June of 2151, Reed set a group of remotely triggered explosives in the monastery at P'Jem. He then detonated them himself, blewing off a wall in the atrium. ()

When Ferengi pirates who raided Enterprise in the same year believed they had discovered the ship's vault, which was actually sickbay's imaging scanner, it was suggested that they use micro-charges to blow it open, as a means of circumventing what they believed to be a magnetic seal. ()

As part of escape plans to break out of Tandaran Detention Complex 26, Ensign Travis Mayweather told Lieutenant Malcolm Reed and a Suliban inmate named Sajen that charges were set. These micro-charges blinked when they were ready to be detonated. Six of them were located on a wall of the internment camp. Using a remote detonator, Reed set off these explosives during the actual prison break, which incidentally killed Tandaran Major Klev and two other Tandaran guards as well as destroying the wall. ()

On a Xindi-Reptilian warship in February of 2154, a micro-charge was used by MACO Major J. Hayes to blow open the door of a cell imprisoning Ensign Hoshi Sato. ()

See also 
 Micro-explosive
 Micro-detonator
Explosive weapons