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Input ~ FG ( chassis ) : solid line
Input ~ Output : dotted line
Output ~ FG ( chassis )
5. Mounting Directions
5-1. Output Derating according to the Mounting
Directions
Recommend standard mounting is method ( A ). Method
( B ) and ( C ) are also possible. Refer to the derating be-
low. Please do not use installation method ( E ), where the
PCB will be on the top side and heat will be trapped in-
side the unit. Method ( D ) is possible for JWT75, but
prohibit for JWT100. In the following derating curve,the
maximum output current is considered to be 100%.
( A )
Standard Mounting
( C )
Prohibit
Output Derating
Standard Mounting ( A ) Direction ( Open frame )
(%)
100
80
60
40
20
0
-10
0
Ambient Temperature ( °C )
4
TDK-Lambda
JWT Series
INSTRUCTION MANUAL
( B )
( D )
Prohibit for JWT100
( E )
20
40 50
65
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