atto farad capacitor

hello how measure a atto farad capacitor? pleas help me... thanks

by plcs7
July 10, 2018

Are you sure you have an atto Farad capacitor? This is 10^6 below a pF, which is generally recognised as the value of stray capacitance in a well-constructed discrete circuit. If you really need to measure an atto Farad directly I would suggest using several GHz in a bridge circuit with suitable guard rings. Definitely beyond the scope of my experience.

by mikerogerswsm
July 11, 2018

hi thanks for reply yes i should meaure a a atto farad
so i am looking for Circuit specifications such as Frequency , bridge type , ....

by plcs7
July 14, 2018

Here is a measurement technique which claims a resolution of 1aF. It is aimed at the measurement of on-chip strays.

by mikerogerswsm
July 14, 2018

...and here is a SEM technique:

by mikerogerswsm
July 15, 2018

hello again thanks for reply...

by plcs7
July 15, 2018

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