A
25 to 30 Watt XC Triple Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
3
3/2001
Heat Sink Option
The 25-30 Watt Triple can be ordered with a “-I” configuration
which provides a case with 3 by M3 inserts located on the top
surface of the case for attaching a heat sink. When an “-HS”
is ordered CALEX will ship the converter with a heat sink
attached. The CALEX HS heat sink was specially developed
for this model and can reduce the case temperature rise to
below 3.3°C per watt with natural convection and less with
moving air. One heat sink is needed for each 25-30 Watt
Triple ordered.
Customer installed heat sinks may also be used. It is
recommended that only liquid heat sink compound be used on
the heat sink interface. Avoid the so called “Dry” pad heat sink
materials. In our experience these materials are actually
worse than using no compound at all.
Mechanical tolerances unless otherwise noted:
X.XX dimensions: ±0.020 inches
X.XXX dimensions: ±0.005 inches
Seal around terminals is not hermetic. Do not immerse units in any
liquid.
BOTTOM VIEW
SIDE VIEW
(11) For module protection only, see also note 3.
(12) The ON/OFF pin is Open Collector TTL, CMOS, and relay
compatible. The input to this pin is referenced to the -input.
(13) The functional temperature range is intended to give an additional
data point for use in evaluating this power supply. At the low
functional temperature the power supply will function with no
side effects, however, sustained operation at the high functional
temperature will reduce expected operational life. The data
sheet specifications are not guaranteed over the functional
temperature range.
(14) Specifications subject to change without notice.
Chassis Mounting Kit - MS12
The MS12 chassis mounting kit allows for direct wire connection
to the 25-30 Watt Triple Series. The mounting kit includes two
barrier strips for wire attachment, an input fuse and an output
trim pot for trimming the +5 volt output. Provisions are also
made for additional output bypassing and grounding.
If the MS12 is ordered at the same time as a 25-30 Watt
Triple the mounting kit will be shipped with the correct fuse
size.
The MS12 may be conveniently attached to a chassis by
using the 4 - 0.156 inch diameter mounting holes provided at
each corner.
Although the MS12 comes with solderless sockets for the
25-30 Watt Triple, it is recommended that the converter be
soldered to the mounting kit for improved reliability under
severe environmental or vibration conditions.
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