Datasheet
SWS1000L
1. Calculated values of MTBF
MODEL : SWS1000L-5
1. Calculating Method
 Calculated based on part count reliability projection of JEITA (RCR-9102).
 Individual failure rates λ
G
 is given to each part and MTBF is calculated by the count of each par
t
 Formula :
 MTBF =
  λ
equip 
 = X 10
6
 (HOURS)
n
 Σ N
i
 ( 
λ
G
π
Q
 )
 i
 i=1 
 where :
  λ
equip
 = Total Equipment Failure Rate ( Failure / 10
6
 Hours )
  λ
G
 = Generic Failure Rate For The ith Generic Part ( Failure / 10
6
 Hours ) 
 N
i
 = Quantity of ith Generic Part
 n = Number of Different Generic Part Categories
 π
Q
 = Generic Quality Factor for the ith Generic Part ( 
π
Q
 = 1 )
2. MTBF Values
 G
F
 : (Ground, Fixed) 
MTBF = 121,485  (Hours)
However MTBF calculation for fan isn't included.
 1
 1
DENSEI-LAMBDA
R-1










