Failure Rate Plots

The instantaneous failure rate is a function of time and stress. For this reason, a 2-dimensional plot of failure rate vs. time at a given stress and a 3-dimensional plot of failure rate vs. time and stress can be obtained in ALTA.

Failure Rate vs. Stress Surface

Fig. 3: 3D Failure Rate Plot

Fig. 4: 2D Failure Rate Plot

A failure rate plot shows the expected number of failures per unit time at a particular stress level (e.g. failures per hour at 410K).