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What does Failure Rate (λ) mean?

Latest Updated:08/01/2005


Failure Rate (λ)


Fit is used as a unit, which stands for Failure in time.
It describes the rate of failure in a given time period and can be expressed as 1 FIT = 1 x 10-9/hour.

A failure rate is an estimate value and varies depending on the operating conditions (voltage, duty, etc.) and environment (temperature, humidity, etc.) of the customer.

For details, refer to the Review of Quality and Reliability Handbook.
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