I can't help but wonder why, in Star Trek, the overloading of a hand phaser is enough to blow up a starship. Remember when Kirk barely ejected one from the Enterprise (what was that episode?) and when it detonated, the whole starship shook? Seemed to shake more than getting hit by a torpedo - but that's more about show production, I know.
If the detonation is so devastating, why don't we see away teams beaming to an enemy location (like the Borg), and hiding an overloading phaser in a drawer or something, and beaming right back - awaiting the devastation and carnage? Skip that last question, the real question is, why does a tiny hand phaser seem to rival a photon torpedo?