TheCircuitDogAnalog Design
RC Time Constant Calculator
Estimate first-order resistor-capacitor timing, including the 63.2% charge time and the approximate −3 dB low-pass corner.
Enter the values above and select Calculate result.
Formula
τ = R × C; fc = 1 / (2πRC)
Worked example
10 kΩ and 0.01 µF (10 nF) give τ = 0.1 ms and fc ≈ 1.59 kHz.
Engineering notes
A capacitor tied to a logic enable pin can interact with input threshold, bias current and output leakage. Treat RC as a timing estimate, not an absolute delay guarantee.
Always compare calculated values with the actual component datasheet, tolerance stack-up, operating temperature and circuit conditions before applying them to hardware.