Capacitor Arrhenius Lifetime Estimate
Scale a reference lifetime to another absolute temperature with an activation-energy Arrhenius factor, L=Lref exp[Ea/k(1/Tuse−1/Tref)]. Supply a component-specific Ea; voltage stress and other ageing mechanisms are excluded.
Description
Scale a reference lifetime to another absolute temperature with an activation-energy Arrhenius factor, L=Lref exp[Ea/k(1/Tuse−1/Tref)]. Supply a component-specific Ea; voltage stress and other ageing mechanisms are excluded.
Capacitor Arrhenius Lifetime Estimate: Scale a reference lifetime to another absolute temperature with an activation-energy Arrhenius factor, L=Lref exp[Ea/k(1/Tuse−1/Tref)]. Supply a component-specific Ea; voltage stress and other ageing mechanisms are excluded.
When to use Capacitor Arrhenius Lifetime Estimate
Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.
- Reference lifetime (h)
- Required number input.
- Activation energy (eV)
- Required number input.
- Reference temperature (K)
- Required number input.
- Use temperature (K)
- Required number input.
How Capacitor Arrhenius Lifetime Estimate works
Scale a reference lifetime to another absolute temperature with an activation-energy Arrhenius factor, L=Lref exp[Ea/k(1/Tuse−1/Tref)]. Supply a component-specific Ea; voltage stress and other ageing mechanisms are excluded. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Estimated Lifetime Hours
- The resulting estimated lifetime hours returned as a number.
Limitations and assumptions
- Capacitance, ESR, leakage, ripple rating, lifetime, and self-resonance vary with frequency, temperature, DC bias, aging, dielectric, package, and mounting. Nominal capacitance alone does not determine in-circuit impedance or reliability.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.
References
-
Capacitor — Wikipedia contributors
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