Arrhenius Calculator

AF=e(Eak(1Tuse−1Tstress))AF = e^{\left(\frac{E_a}{k}\left(\frac{1}{T_{use}} - \frac{1}{T_{stress}}\right)\right)}
  • Ea = Activation energy (eV)
  • k = Boltzmann constant = 8.617333262145e-5 eV/K
  • Tuse = Use temperature (K)
  • Tstress = Stress temperature (K)
  • Use Life = Desired use duration (hours)
  • Test Duration = Time to simulate under stress (hours)

Based on the original Arrhenius formulation: Svante Arrhenius, Z. Phys. Chem. 4 (1889) 226.

MaterialEa (eV)
Plastic0.4-1.2
Semiconductor0.2-0.6
Metal0.5-0.9
Ceramic0.9-1.5

AF from durations (Use Life / Test Duration): 16

AF from Arrhenius equation (Ea + temperatures): 29.0284

To simulate 8000 hours of use at 50°C, test for 500 hours at 100°C.

AF from durations and AF from Arrhenius differ by more than 10%. Check units, temperatures, and assumed Ea.