[time-nuts] LED reliability

[Henk ten Pierick]

On Apr 30, 2008, at 18:56, Hal Murray wrote:

>> LEDs been viable since at least the early 70's?  Talk about planned
>> obsolescence...
>
> How reliable were the early LEDs?  When did they start to get used  
> in high
> reliability applications?

When I joined Hewlett-Packard in 1970, they made their first red leds  
and claimed 50000 hours mtbf.

Henk