Re: Aging effect on voltage drop
Grumpy_Mike:
Data sheets don't tell anything in this direction
Yes the do they give a maximum and minimum range for this parameter.
I understand (now, thanks) that the "typ." and "max." values for VF are not only individually different,
but may change over time for a given led.
(Besides a temperature dependency of course)
Grumpy_Mike:
Any real life experiece with that?
Yes
It it usual that VF will grow with age ( making current decrease in a given resistor controlled circuit )?