Cosel LFA100F, Instruction Manual

Page: 9 / 14

3.4 Expectancy life and warranty
¡
Expectancy Life.
Table 3.10 Expectancy Life (LFA10F-
O
)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Expectancy Life
Io
[
75% 75%<Io
[
100%
A, D , E , F Convection
Ta = 40
C
or less 6years 6years
Ta = 50
C
5years 3years
B, C Convection
Ta = 45
C
or less 6years 6years
Ta = 55
C
5years 3years
A,B,C,D,E,F Forced air Ta = 60
C
5years 3years
Table 3.11 Expectancy Life (LFA15F-
O
)
Mounting
Method
Cooling
Method
Average ambient
temperature (year)
Expectancy Life
Io
[
75% 75%<Io
[
100%
A, B, C, D Convection
Ta = 40
C
or less 6years 6years
Ta = 50
C
5years 3years
E , F Convection
Ta = 35
C
or less 6years 6years
Ta = 45
C
5years 3years
A,B,C,D,E,F Forced air Ta = 60
C
5years 3years
¡
Derating curve depending on input voltage
Derating curve depending on input voltage is shown in Fig.3.8.
¡
Mounting method
¡
(F) mounting is not possible when unit is with case cover, but if
need to operate unit by (F) positioning with case cover, tempera-
ture / load derating is necessary. For more details, please contact
our sales or engineering departments.
3.3 Mounting screw
¡
The mounting screw should be M3. The hatched area shows the
allowance of metal parts for mounting.
¡
If metallic fi ttings are used on the component side of the board,
ensure there is no contact with surface mounted components.
¡
This product uses SMD technology.
Please avoid the PCB installation method which includes the twist-
ing stress or the bending stress.
*
Recommendation to electrically connect FG to metal chassis for
reducing noise.
¿
LFA10F, LFA15F
¿
LFA30F, LFA50F, LFA75F, LFA100F,
LFA150F
¿
LFA240F, LFA300F
[AC V]
[%]
100
80
85 90
Load factor
AC-DC Power Supplies Open Frame/ Enclosed Type
Instruction Manual
LFA-28
LFA
Fig.3.20 Allowance of metal parts for mounting
(LFA30F, LFA50F, LFA75F, LFA100F, LFA150F)
Fig.3.19 Allowance of metal parts for mounting
(LFA10F, LFA15F)
8
8
8
8
CN1
8
8
8 8
8
8 8
8
CN1
Unit [mm]
Unit [mm]
Fig.3.18 Mounting method
(D) (E) (F)
CN1
CN1
CN1
Standard
Position
CN1
(A) (B) (C)
CN1
CN1
Fig.3.21 Allowance of metal parts for mounting
(LFA240F, LFA300F)
Unit [mm]
Fig.3.17 Derating curve depending on input voltage
8
8
8
8
8 8
8
8 8
8
CN1, TB1
me̲lfa1.indd LFA-28 me lfa1 indd LFA-28 2015/06/15 15:22:55 2015/06/15 15:22:55