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Why don't we have LED night-lights that last forever? The offerings here assume standard lighting sockets. Answered

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It is NOT the LED that is the problem  - it is the power supply!  Most of them are NOT well designed.

vksourcing supplies top-of-the-line LED lights and I can endorse their superiority.
Ken
 

all electronic components have limited lifetime cause of processes that deform the stuff inside chips. 1 of them is diffusion - when the chip's internal structure smudges like in photoshop they are accelerated with strength of currents and temperature. thats why some computer hardware like video cards has quite short life white leds also have phosphor that loses efficiency with time