Re:Teardown of a $1.25 LED Lightbulb
by tialaramex on Thursday February 20, 2020 @06:52AM
(#22374400)
The LEDs stated lifetime is based on an expected gradual reduction in brightness, with an industry agreed cut-off at, IIRC 90% of original light output. If you have LED lamps that don't fail (typically due to heat) they will just keep getting gradually dimmer forever.
Prior technologies have expected failure built in. An incandescent bulb's filament will fail eventually (making the filament more robust reduces light output so now your bulb lasts longer but is less useful or costs a lot more to run) and either type of fluorescent very slowly loses the gas that makes it work.
Prior technologies have expected failure built in. An incandescent bulb's filament will fail eventually (making the filament more robust reduces light output so now your bulb lasts longer but is less useful or costs a lot more to run) and either type of fluorescent very slowly loses the gas that makes it work.