CMMDW24S5-4000 Wall Industries,Inc., CMMDW24S5-4000 Datasheet - Page 10

• Manufacturer Part Number: CMMDW24S5-4000
• Description: 20w Dc/dc Chassis Mount Converter 9-36 Vdc Input 5 Vdc Single Output At 4000ma
• Manufacturer: Wall Industries,Inc.

Soldering and Reflow Considerations:
Safety and Installation Instructions:
Fusing Consideration
Caution: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of sophisticated power architecture. For maximum flexibility internal fusing is not
included; however, to achieve maximum safety and system protection always use an input line fuse. The safety
agencies require a normal-blow fuse with maximum rating of 6A. Based on the information provided in this data
sheet on inrush energy and maximum DC input current; the same type of fuse with lower rating can be used. Refer
to the fuse manufacturer’s data for further information.
MTBF and Reliability
The MTBF of the CMMDW single output series of DC/DC converters has been calculated using Bellcore
TR-NWT-000332 Case I: 50% stress, Operating Temperature at 40°C (Ground fixed and controlled environment).
The resulting figure for MTBF is 1,621,000 hours.
MIL-HDBK 217F NOTICE2 FULL LOAD, Operating Temperature at 25°C. The resulting figure for MTBF is
659,000 hours.
(888) 597-WALL
Lead Free Wave Solder Profile for CMMDW Single Output Models
Figure 10
TIME (SEC)
www.wallindustries.com
Rev. A
Reference Solder: Sn-Ag-Cu; Sn-Cu
Hand Welding: Soldering Iron: Power 90W
Actual Heating
Preheat Zone
Zone
TECHNICAL DATASHEET
Welding Time: 2~4 sec
Temp: 380~400°C
CMMDW24S5-4000
Reference Parameter
Rise temp. speed: 3°C/sec max.
Preheat temp: 100~130°C
Peak temp: 250~260°C
Peak time (T1+T2 time): 4~6 sec
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