1. A programmable device, comprising: a first net comprising a first programmed antifuse, said first programmed antifuse having a first maximum permissible operating current I.sub.1poc, a first peak actual operating current I.sub.1aoc flowing through said first programmed antifuse during switching of said first net during normal circuit operation; and a second net comprising a second programmed antifuse, each of said first and second programmed antifuses having a substantially identical unprogrammed structure, said second programmed antifuse having a second maximum permissible operating current I.sub.2poc, a second peak actual operating current I.sub.2aoc flowing through said second programmed antifuse during switching of said second net during normal circuit operation, wherein I.sub.1aoc .ltoreq.I.sub.1poc &lt;I.sub.2aoc .ltoreq.I.sub.2poc.