Acceleration Factor Calculators

Calculate acceleration factors using industry-standard reliability models

Used for temperature acceleration in reliability testing. Models the relationship between temperature and failure rate.

Formula:

AF = exp[(Ea/k) × (1/Tuse - 1/Ttest)]

Activation Energy (Ea)(eV)

Typical range: 0.3-1.5 eV for electronic components

Use Temperature(°C)

Test Temperature(°C)

Used for thermal cycling fatigue. Models the relationship between temperature range and fatigue life.

Formula:

AF = (ΔT_test/ΔT_use)^C

Test Temperature Range (ΔT_test)(°C)

Use Temperature Range (ΔT_use)(°C)

Coffin-Manson Coefficient (C)

Typical range: 2-5 for electronic components

Combined stress model accounting for temperature, humidity, and voltage effects simultaneously.

Formula:

AF = AF_T × AF_H × AF_V

Test Temperature(°C)

Use Temperature(°C)

Temperature Exponent (n)

Activation Energy (Ea)(eV)

Test Humidity(%)

Use Humidity(%)

Humidity Exponent (m)

Test Voltage(V)

Use Voltage(V)

Voltage Exponent (p)

Acceleration factors are used to relate failure rates or lifetimes under test conditions to those under use conditions. They allow engineers to: