Comment on My led lights suddenly turned dim. Why do they break like that?
db2@lemmy.world 2 weeks agoI’m sorry but that’s utter horseshit. I don’t know where you heard that from but it really sounds like manufacturer propaganda. The driver circuitry won’t fail unless it’s also cheaply made and consequently running far hotter than it would if made correctly. They definitely did not spend money on a failure study to redesign the led part to match failure rates. They just did the cheapest thing possible that made light without exploding or (usually) melting.
henfredemars@infosec.pub 2 weeks ago
They don’t need to run failure studies. That basic characterization work is mostly already done for you. Component vendors (should) publish tables of mean time between failure for the components you’re buying that can be used to get a rough estimation with just a few minutes of effort. Typically it’s indexed by temperature, like for caps.
Now, does the bottom of the market actually use those tables? I can’t say for sure. I know one high power headlamp company does this for their LED drivers to balance lifetime with output, but I can’t know for sure what every business does.