SFS5-12 ETC, SFS5-12 Datasheet - Page 17

• Manufacturer Part Number: SFS5-12
• Description: Ac-dc Converter Compact Miniature Type
• Manufacturer: ETC

DATASHEET
SEP 05, 2007
SFS5 Series AC-DC Converter Compact Miniature Type
With Your Electronics POWERPLAZA
www.powerplaza.co.kr
Calculating Reliable Values of MTBF
given to each part and MTBF (Mean Time Between Failure) is calculated by the count of each part.
1. Calculating method
Calculated based on part count reliability projection of MIL-HDBK-217F Individual failure rates λg is
2. MTBF Values
MTBF = 1/ λepuip = 1/ (∑Ni(λG∏Q)i
λequip
λG
∏Q
Ni
n
MTBF ≒484,937(Hours)
Logic IC
Transistor, FET
Diode
Voltage Regulator
Photo-coupler
Diode Bridge
Ele-capacitor
Ceramic Capacitor
MLCC
Choke coil
Switching trans
Line Filter
Resistor Chip
Connector
Reflow soldering
Flow soldering
PCB
Fuse
Total Equipment Failure Rate λG×n(F/T)
<Formula>:
MTBF = 10^
: Total Equipment Failure Rate (Failure/10^
: Quantity of ith Generic Part
: Generic Failure Rate for The ith Generic Part (Failure/ 10^
: Generic Quality Factor for The ith Generic Part (∏Q=1)
: Number of Different Generic Part Categories
PART
6
/ λG(F/T)
i=1
n
*10^
6
(Hours)
Number
n
45
37
6
1
1
6
1
1
1
3
1
7
1
1
2
7
5
1
1
Hours)
Failure Rate
λG(F/T)
0.01500
0.09900
0.02200
0.02400
0.07000
0.06600
0.01900
0.02600
0.05300
0.00022
0.00420
0.00440
0.01600
0.05200
0.00014
0.00780
0.37000
0.02000
6
Hours)
λG×n(F/T)
484937.831
Rate*n
Failure
0.01500
0.09900
0.13200
0.02400
0.07000
0.19800
0.05700
0.02600
0.37100
0.00022
0.00420
0.00880
0.11200
0.26000
0.00630
0.28860
0.37000
0.02000
2.06212
Separate
Separate
*3
SMT
Remark