Burn In Time Calculator
Work out burn in time instantly with clear inputs, formula shown and shareable results.
About Burn In Time Calculator
Burn-in compresses field time by raising temperature: the Arrhenius acceleration factor at 125 versus 55 degrees with Ea = 0.7 eV is around 30, so 2,000 field hours are screened in about 65 hours. Voltage stress multiplies that further, which is why modern screens combine both.
Formula
Burn-in
AF = exp((Ea/k)(1/T_use - 1/T_burn)); burn-in hours = target field hours / AF
Worked example
With the default values below, Burn In Time Calculator returns Burn-in time required of 25.76. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Burn-in temperature
- 125 °C
- Use temperature
- 55 °C
- Activation energy
- 0.7 eV
- Field hours to screen
- 2,000 h
Results
- Burn-in time required
- 25.76 h
- Acceleration factor
- 77.65 x
- Additional acceleration at 1.2x voltage
- 3.00 x
- Time with voltage acceleration
- 8.59 h
Step by step
- 1Values used
- 2Burn-in
- 3Burn-in time required= 25.76 h
- 4Acceleration factor= 77.65 x
- 5Additional acceleration at 1.2x voltage= 3.00 x
- 6Time with voltage acceleration= 8.59 h
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
Why burn in at all?
To remove infant mortality failures before shipment. The bathtub curve's early steep region is where most latent defects surface.
Why is burn-in being reduced?
It is expensive, consumes some device life, and modern process control has cut infant mortality enough that statistical screening plus IDDQ and stress testing often suffices.
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