Datasheet
DataSheet
10W, Single Output
VER:00 Page 30 of 30 Issued Date:2009/03/02
Safety and Installation Instruction
Fusing Consideration
Caution:This converter is not internallyfused.An input line fuse mustalways be used.
This encapsulated converter can be usedin a wide variety of applications, ranging from simple stand-
alone operation to
an integrated part of a 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
slow-blow fuse with maximum rating of 5
A. 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
forfurther information.
MTBF and Reliability
TheMTBF of PXD10-xxWSxx series of DC/DC converters has beencalculated 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 1.976×10
6
hours.
MIL-HDBK 217F NOTICE2 FULL LOAD, Operating Temperature at 25℃°C. The resulting figure for MTBF is
1.416 × 10
6
hours.