Fall time

This article is about the electronics concept. For the film, see Fall Time.

In electronics, fall time (pulse decay time) \scriptstyle t_f\, is the time taken for the amplitude of a pulse to decrease (fall) from a specified value (usually 90% of the peak value exclusive of overshoot or undershoot) to another specified value (usually 10% of the maximum value exclusive of overshoot or undershoot).

Limits on undershoot and oscillation (also known as ringing and hunting) are sometimes additionally stated when specifying fall time limits.

See also

References

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