Just read that a common 3.3V regulator can fail from a voltage spike as low as 6V, which seems crazy low.

Found it in a forum thread about protecting power supply sections in modern gear. Anyone have a go-to protection circuit they add for these sensitive parts?

3 comments

3 Comments

faith_thomas7h ago

Sounds like a design flaw, not a voltage problem.

adamk957h ago

Ugh, exactly! @faith_thomas is totally right. They keep blaming the power supply, but if the system fries every time there's a small surge, that's bad engineering. They should have built in a better buffer or surge protection from the start.

fiona9856h ago

Actually, that 6V spike can be real trouble for those tiny parts. Adamk95 might be onto something about bad engineering, but sometimes you just need a simple zener diode right at the regulator input.