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- Highly_accelerated_stress_test abstract "The highly accelerated stress test (HAST) method was invented by Nihal Sinnadurai while working as a Research Engineer at British Telecommunications Research Laboratories in 1968 in order to perform highly accelerated reliability testing of electronics components that are likely to encounter humid environments during normal (ambient) operation. The method uses the principle of a non-saturating autoclave designed and engineered with no moving parts, to deliver close temperature (<1°C) and humidity (<2%RH) control and a high reliability of the stress equipment. Nihal Sinnadurai and his team carried out many millions of device hours of reliability stress testing in HAST chambers, and arrived at a clear correlation with a humidity exponent as the stress accelerating agent.The acceleration factor for elevated humidity is empirically derived to beWhere RHs is the stressed humidity, RHo is the operating environment humidity and n is an empirically derived constant (usually 1<n<5)The acceleration factor for elevated temperature is derived to beWhere Ea is the activation energy for the temperature induced failure (most often 0.7eV for electronics), k is Boltzmann's Constant, To is the operating temperature in Kelvin, and Ts is the stressed temperature.Therefore the total acceleration factor for unbiased HAST testing is".
- Highly_accelerated_stress_test wikiPageID "29087743".
- Highly_accelerated_stress_test wikiPageRevisionID "578572860".
- Highly_accelerated_stress_test hasPhotoCollection Highly_accelerated_stress_test.
- Highly_accelerated_stress_test subject Category:Reliability_engineering.
- Highly_accelerated_stress_test comment "The highly accelerated stress test (HAST) method was invented by Nihal Sinnadurai while working as a Research Engineer at British Telecommunications Research Laboratories in 1968 in order to perform highly accelerated reliability testing of electronics components that are likely to encounter humid environments during normal (ambient) operation.".
- Highly_accelerated_stress_test label "Highly accelerated stress test".
- Highly_accelerated_stress_test sameAs m.04n6vnz.
- Highly_accelerated_stress_test sameAs Q5759549.
- Highly_accelerated_stress_test sameAs Q5759549.
- Highly_accelerated_stress_test wasDerivedFrom Highly_accelerated_stress_test?oldid=578572860.
- Highly_accelerated_stress_test isPrimaryTopicOf Highly_accelerated_stress_test.