robus
Lowcountry Low Roller
I didn't take away from Jeremy's comments that passive perception is intended for use against static DCs. Maybe that's what he meant. For my part, there is always a roll. Hiding character rolls vs passive perception. Searching character rolls vs trap dc (which is 10 plus modifiers for trap setter).
But wasn't passive checks added to stop repetitive rolling? Or are you talking about examining an object for traps? The AngryGM suggests rolling stealth for the trap as it's attempting to hide from the PCs. The bonus is provided by the trap maker (basically the DM) who can decide just how craftily it was constructed. That's not a bad approach.