> The CYPD4225 is definitely not rated for space.. if it would work in space<p>It will. Not too long and not very reliable, but will.<p>From history of space rockets, they was definitely first created as "two purpose" (except, may Vanguard, which was totally civilian program), so their electronics considered possible radiation from nuclear war, but fortunately, in space found natural radiation, but slightly other type (spectrum).
Currently, SpaceX just use industrial grade computers on rockets (not RAD hardened).<p>Well, look at tech details: for RAD digital electronics exists two types of problems.<p>1. Random spikes (switches) from high energy charged particles.
Unfortunately, only Military RAD grade parts have integrated safety mechanisms, for Civ/Industry grades, could make shield with EM field and thick layer of protecting material, like Lead or even Uranium.
When thyristor effect happen, need to power circle (turn off/on and boot), and this is risks source for mission, but most probably, it will withstand flight to Moon.<p>2. Aging of semiconductor structure from constant flow of particles with high penetration - basically it is just high speed diffusion, which destroy semiconductor structures.
But for Earth-Moon environment, this is issue for long term operations (months or even years).<p>So, will work.