[sdiy] Tempco 2k +3350ppm Group buy

[Paul Perry]

And one wishes it were so!
But resistors are made of non-ideal materials, so to really
know what is happening, one needs the graph.
Personally, I find it suspicious that the common tempcos are so close
to the specifications for pure copper.
Maybe we're paying for a sputtered copper layer!
In defence of ppm/K, we're only interested in a small chunk of the
curve, say 5 to 40 degC.

paul perry melbourne australia

----- Original Message ----- 
From: "René Schmitz" I would expect a linear ideal 3354ppm 1k resistor to
show
1K + (t-25°C)*3.354Ohms/K. Or R(T) = 3.354Ohms/K * T.
I think this way of writing it is a lot more clear than this whole
buissiness with ppm/K.