There are tolerance ratings given in the selection criteria at DigiKey. When you select 1 of several 'standard' values for C or L, they may as well be as accurate as possible. Within cost constraints. OTOH, this device is probably not going to set a new standard for precision measurement so maybe 5% is close enough.
It's not easy to find 1% capacitors and, in the old days, analog computers used capacitors with much tighter tolerances. In fact, they had them temperature stabilized in ovens. They were serious about accurate integration. The computers could be as accurate as 1 part in 10^4 or 0.01%. Not all of them, just the real high priced units.
I guess if you had to model the liftoff of an Atlas missile, you needed a fairly accurate computer.
Richard
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Posted by: rstofer@pacbell.net
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