4 Manual Number 9018558 • Revision J, September 3, 2021
SECTION 1 GENERAL DESCRIPTION
1.1
INTRODUCTION
The model TC120 DC/DC Power Converter is a lightweight power converter that translates a direct
current (DC) input of 28 volts to an adjustable 5 to 18 volt direct current (DC) output.
The input operating voltage (24–32VDC) makes the TC120 suitable for nearly any common
general, business, or commercial aviation application and provides an adjustable DC output
voltage of 5 to 18VDC. The unit is rated for a nominal output of 120 watts to power avionics,
instrumentation, personal charging, lighting, and many other applications. The TC120 DC/DC
Converter is FAA certified to TSO-C71 and tested to rigorous environmental standards and levels
of RTCA DO-160G, MIL-STD-461F, MIL-STD-704F and MIL-STD-810F. The small size and light
weight in conjunction with its installation flexibility (inside or outside the pressure vessel) make it an
ideal choice for aircraft power needs while reducing the challenges associated with other similar
products.
Highlighted features include short circuit protection, overload capability, low input voltage shut-
down, temperature monitoring, reverse polarity protection, a self-resettable over-temperature
disable and an optional remote enable (on/off) feature.
The TC120 DC/DC converter has a robust Military-rated circular connector and a rugged aluminum
case which dissipates heat and provides excellent mechanical strength. It is engineered to require
no external cooling and contains no internal fans or cooling methods, which saves energy, reduces
weight and allows more flexible installation locations. At only 11.0 oz (312 g), it is lighter and
smaller than any other certified solution in the aviation market today.
