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For polarised capacitor, negative lead usually came in with a shorter leg, while the positive lead with a longer leg. On the packaging, look for negative symbol ( - )on a coloured band, it also indicates this leg is the negative lead. When connecting, the simple rule is: positive to positive, negative to negative (e.g., + to input, - to GND).
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OpAmp Pinout
Always check for OpAmp's pinout and look for the right package.
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