Fall time

In electronics, fall time (pulse decay time) ${\displaystyle \scriptstyle t_{f}\,}$ 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).

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

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

See also

• Rise time
• Transition time

References

•  This article incorporates public domain material from the General Services Administration document: "Federal Standard 1037C". (in support of MIL-STD-188)