JC050F1 Lineage Power, JC050F1 Datasheet - Page 14

• Manufacturer Part Number: JC050F1
• Description: CONVERTER DC/DC 3.3V 33W OUT
• Manufacturer: Lineage Power
• Series: JC050r
• Type: Isolated with Remote On/Offr

Specifications of JC050F1

• Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 33W
• Mounting Type: Through Hole
• Voltage - Input: 18 ~ 36V
• Package / Case: 9-DIP Module
• 1st Output: 3.3 VDC @ 10A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 33W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 81%
• Approvals: CSA, UL, VDE
• Product: Isolated
• Output Power: 8 W
• Input Voltage Range: 18 V to 36 V
• Input Voltage (nominal): 28 V
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 2.4 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: DIP
• Output Type: Isolated
• Output Voltage: 3.3 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

JC050F, JC075F, JC100F Power Modules: dc-dc Converters;
18 Vdc to 36 Vdc Input, 3.3 Vdc Output; 33 W to 66 W
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14
Thermal Considerations
Custom Heat Sinks
A more detailed model can be used to determine the
required thermal resistance of a heat sink to provide
necessary cooling. The total module resistance can be
separated into a resistance from case-to-sink (θcs) and
sink-to-ambient (θsa) shown below (Figure 28).
Figure 28. Resistance from Case-to-Sink and
P
D
→
Sink-to-Ambient
T
C
θcs
T
S
(continued)
θsa
T
A
8-1304
For a managed interface using thermal grease or foils,
a value of θcs = 0.1 °C/W to 0.3 °C/W is typical. The
solution for heat sink resistance is:
This equation assumes that all dissipated power must
be shed by the heat sink. Depending on the user-
defined application environment, a more accurate
model, including heat transfer from the sides and bot-
tom of the module, can be used. This equation pro-
vides a conservative estimate for such instances.
Layout Considerations
Copper paths must not be routed beneath the power
module mounting inserts.
θ
sa
=
(
------------------------ -
T
C
P
–
D
T
A
)
–
θ
cs
Lineage Power
March 2008
Data Sheet