11
TDK-Lambda
LS
25-150
Series
INSTRUCTION MANUAL
5-2 Mounting Method
1)
This is convection cooling type power supply. In consideration of the heat radiation and safety, please keep a dis-
tance of more than 15mm between the power supply and the peripheral parts. When lining up multiple units, please
make sure to place them 15mm or more apart from each other.
2)
Maximum allowable penetration of mounting screws into the power-supply is 5mm except LS25 (4mm).
3)
Recommended torque for mounting screws of LS25 ~ LS150 (M3 screw) : 0.49 N
⋅
m (5.0 kgf
⋅
cm).
6. Wiring Method
z
The input and output load wires shall be separated and twisted to improve noise immunity.
z
Both wires must be as thick and short as possible to make lower impedance.
z
Noise can be reduced by connecting a film capacitor with 0.1uF capacitance across the load terminals.
z
For safety and EMI considerations, connect the FG terminal of LS series to mounting set ground terminal.
z
The recommended wire type :
Recommended crimp-type terminal
MODEL
Recommended
Wire
Recommended torque
D
(MAX)
t
(MAX)
Mounting
Pieces
(MAX)
LS25 AWG16-22
M3.0 Screws
0.49 N
⋅
m (5.0 kgf
⋅
cm)
6.0mm
0.8mm
2 pieces
LS35 ~ LS150
AWG14-22
M3.5 Screws
1.0 N
⋅
m (9.8 kgf
⋅
cm) ~
1.4 N
⋅
m (13.7 kgf
⋅
cm)
6.8mm
0.8mm
2 pieces
Note 1 : When using separate loads, it is recommended to use 2 pieces of 0.8mm thick crimp-type terminal.
Note 2 : For recommended wire diameter, refer to wire maker recommended allowable current and voltage
drop. For higher output current model like 3.3V & 5V, bigger diameter wire is recommended.
