AC input: 90~264Vac Built-in Active PFC, PF>0.95 High efficiency, long life and high reliability Output protections: OCP/OVP/SCP/OPP No fan suitable for quiet environment Wide operating ambient temperature  (-40℃~65℃) Altitude up to 5000m 100% full load burn-in test Conformal coating 3 years warranty MODEL VAT-UP200S-4.5-55L OUTPUT DC Output 4.5V Rated Current 40A   ( PSU bottom fixed on heat sink of square > 250*250*3mm aluminum plate) Current Range     Note 1 0~40A Ripple and Noise 25~65℃ ≤150mV 0~25C ≤200mV Voltage Adj. Range 2.8~5.10V Voltage Accuracy ±2.0% Line Regulation ±0.5% Load Regulation ±2.0% Set-up Time ≤2S (230Vac input, Full load) Hold up Time ≥10mS(220Vac input , 80% load) Temperature Coefficient ±0.03%/℃ Overshoot <5% INPUT Voltage Range 90Vac~264Vac Frequency Range 47Hz~63Hz Efficiency ( Typical) 89%(230Vac input ,full load) AC Current (max.) <3A Inrush Current (Typical) <80A@220Vac      Cold start Power factor PF>0.98/120VAC    &    PF>0.95/230VAC   (at full load) PROTECTION Over Power 202.5W~270W, Hiccup, auto recovery Over Voltage 5.2~6V, constant voltage, auto recovery Over Current 45A~60A, Hiccup, auto recovery Shorted Circuit Long-term mode, auto recovery ENVIRONMENT Operating amb. Temp. & Hum. -40℃~65℃;  20%~90%RH  No condensing   (refer to the derating curve) Storage Temp. & Hum. -40℃~85℃;  10%~95%RH  No condensing SAFETY &EMC Note 3 Safety Standards UL60950-1 2nd Ed; IEC 60950-1:2005(2nd Ed) ;EN60950-1:2006 Withstand Voltage Primary-Secondary: 3.0KVac/10mA .Primary-PG:1.5KVac/10mA. Secondary-PG: 0.5KVDC/10mA. Leakage Current Input—output: ≤0.25mA     Input—PG: ≤3.5mA  （264Vac input, 63Hz） Isolation Resistance 10M ohms EMI Conduction Compliance to EN55022, EN55024, FCC PART 15   CLASS A EMI Radiation Compliance to EN55022, EN55024, FCC PART 15   CLASS B Harmonic Current Compliance to EN61000-3-2  CLASS D EMS Immunity Compliance to EN61000-4-2,3,4,5,6,8,11; OTHERS MTBF (MIL-HDBK-217F) More than 200,000Hrs (25C, full load) Dimension  (L*W*H) 165*55*26.5mm Packing 16pcs/CTN Cooling method PSU bottom fixed on heat sink of square > 250*250*3mm aluminum plate or forced air convection NOTE 1.     All parameters NOT specially mentioned are measured at rated input, rated load and25℃ of ambient temperature. 2.     Measured at 20MHz of bandwidth by using a12”twisted pair-wire terminated with a 0.1 uF & 100uF parallel capacitor. 3.  The SPS is considered a component which will be installed into final equipment. We cannot guarantee that the final equipment will meet EMC directives, Final product manufactures must be re-confirm that their product meets EMC directives.