User manual

NEMIC-LAMBDA
LS50 ⋅ 75 ⋅ 100 ⋅ 150 Series
INSTRUCTION MANUAL
5. Mounting Directions
5-1. Output Derating according to the Mounting Directions
Recommended standard mounting is Method ( A ). Method ( B ), ( C ) and ( D ) are also possible. Refer to the derating
below. Please do not use installation Method ( E ), where the PCB will be on the topside and heat will be trapped inside
the unit.
In the following derating curve, the maximum output current is considered to be 100%.
(A) Output Derating versus Ambient Temperature (Convection Cooling)
LS50-3.3, -5, -12, -15, -24, -36 & -48
Output Derating Vs Ambient Temperature
0
20
40
60
80
100
120
-25 0 25 50 75
100
Ambient Temperature (°C)
Load
Mounting
Mounting
A, B & D
C
40 60
70
50
70
5