http://www.tracopower.com Page 2 of 3
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
DC/DC Converters
TRA 3 Series 3 Watt
Input Specifications
Input current no load / full load 5 Vin models 50 mA / 700 mA typ.
12 Vin models 40 mA / 285 mA typ.
24 Vin models 30 mA / 150 mA typ.
Surge voltage (1 s max.) 5 Vin models 9 V max.
12 Vin models 18 V max.
24 Vin models 30 V max.
Input filter internal capacitor
Reverse polarity input current 0.5 A max.
Recommended input fuse (slow blow type) 5 Vin models: 2000 mA
12 Vin models: 1000 mA
24 Vin models: 500 mA
Output Specifications
Regulation – Input variation (1 % change of Vin) 1.01 % typ. / 1.2 % max.
– Load variation see model table and graph 1 on page 3
Ripple and noise (20 MHz Bandwidth) 100 mVp-p max.
Temperature coefficient ±0.01 %/K typ. / ±0.02 %/K max.
Short circuit protection limited 0.5 s max.
Capacitive load 220 µF max.
General Specifications
Temperature ranges – Operating –40°C to +95°C
– Case temperature +100°C max.
– Storage –50°C to +125°C
Derating 5.7 %/K above +85°C
Humidity (non condensing) 95 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >2’000’000 h
Isolation voltage (60 s) – Input/Output 1‘000 VDC
Isolation capacitance – Input/Output 60 pF typ. / 120 pF max.
Isolation resistance – Input/Output >1‘000 Mohm
Switching frequency 60 kHz typ. (frequency modulation)
Safety standards IEC 60950-1:2005 (2nd edition) + Am 1:2009
EN 60950-1:2006 + Am 1:2010 + Am 11:2009
– Certification documents www.tracopower.com/overview/tra3
Environmental compliance – Reach
www.tracopower.com/products/reach-declaration.pdf
– RoHS RoHS directive 2011/65/EU
