Windchill Risk and Reliability Desktop Help > Windchill Prediction > Prediction Calculations > Mission Reliability Calculations > Dormant Conversion Table
Dormant Conversion Table
As described in Mission Reliability Calculations, the dormant (passive) failure rate for a part is calculated. To accomplish this, the conversion factors used are those in “Topic A16: Dormant Analysis” of The Rome Laboratory Reliability Engineer’s Toolkit. To determine the dormant failure rate for a part, the active failure rate is multiplied by the conversion factor listed in the following table for the part type.
Part Types
Ground, Active To Ground, Passive
Airborne, Active To Airborne, Passive
Airborne, Active To Ground, Passive
Naval, Active To Naval, Passive
Naval, Active To Ground, Passive
Space, Active To Space, Passive
Space, Active To Ground, Passive
Capacitors
0.10
0.10
0.03
0.10
0.04
0.20
0.40
Circuit Boards
0.04
0.02
0.01
0.03
0.01
0.08
0.20
Connectors
0.005
0.005
0.003
0.008
0.003
0.02
0.03
Diodes
0.04
0.05
0.01
0.04
0.03
0.20
0.80
Integrated Circuits
0.08
0.06
0.04
0.06
0.05
0.10
0.30
Relays
0.20
0.20
0.04
0.30
0.08
0.40
0.90
Resistors
0.20
0.06
0.03
0.10
0.06
0.50
1.00
Switches
0.40
0.20
0.10
0.40
0.20
0.80
1.00
Transformers
0.20
0.20
0.20
0.30
0.30
0.50
1.00
Transistors
0.05
0.06
0.02
0.05
0.03
0.20
1.00