[Elecraft] Carbon Composition Resistors - Aging

[N2EY at aol.com]

In a message dated 7/15/07 6:03:54 PM Eastern Daylight Time, 
Jack.Smith at cliftonlaboratories.com writes:


> There may be reasons to keep 50 year old carbon composition resistors 
> around, such as restoring period radios, but these parts do age poorly, 
> even when "new old stock." 

Considering the technology, an upwards drift of about 10% over a half-century 
doesn't seem too bad, really.

btw, I think those are half-watters.

Before using one, I would carefully check the 
> 
> value as odds are good it will not be in tolerance.
> 

I always do!

One thing I have always found amazing is how at least some old parts, 
of the cheapest possible construction, will test like brand new after
so many decades. 

73 de Jim, N2EY


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