Specifications

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Specifications
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Environmental assumptions
•Failureratesarebasedona35°Cambienttemperature.
• Appliedcomponentstresslevelsare50%(voltage,current,and/orpower).
• Ground,fixed,controlledenvironmentwithanenvironmentaladjustmentfactorequalto
1.0.
General assumptions
• Componentfailureratesareconstant.
•Board‐to‐systeminterconnectsareincludedwithinestimates.
•Aharddiskdriveisnotincludedinestimates.
•Non‐electricalcomponents(screws,mechanicallatches,labels,covers,etc.)arenot
includedinestimates.
General notes
•MethodI,CaseI=Basedonpartscount.Equipmentfailureisestimatedbytotalingdevice
failuresratesandquantitiesused.
• QualityLevelII=Devicespurchasedtospecifications,qualifieddevices,vendorlot‐to‐lot
controlsforAQLsandDPMs.
Whereavailable,directcomponentsupplierpredictionsoractualFITrateshavebeenused.