Final post on US equipment for the time being. Future posts will focus on equipment used by the opposition.
The main cluster bombs used by the US appear to all use
the same sub-munition, a "combined effects bomb". If similar to HEDP, we might be looking at something similar to the M72's HEDP option (6dx2(10) cr ex with 6dx2 [3d+1] cr ex linked). According to Wikipedia, they use parachute-like devices to spread out; presumably this also helps them land pointed in the correct direction for the shaped charge to actually be effective. Number and dispersal depends on the weapon being used to deliver them.