Meanwell Products

ESP-120 Series - 108W Desktop Power Supply


Additional information







  • AC input range selected by switch
  • Protections:Short circuit/over load/over voltage/over temperature
  • Forced air cooling by built-in DC fan (240V only)
  • Fixed switching frequency at 25KHz
  • 3 colour LED loading indicator
Input voltage range 88 ~ 132VAC /176 ~ 264VAC Selected by switch 249 ~ 370VDC
Input frequency 47 ~ 63Hz
AC current 3A / 115V 1.5A/230V
Inrush current Cold start 40A
Leakage current <3.5mA / 240VAC
Rated Power 108W
Line regulation ±0.5%
Setup, rise time 200ms, 100ms at full load
Hold time 36ms at full load
Overload protection 105% ~135% rated output power
Protection type:Fold back current limiting, recovers automatically after fault condition is removed
Over voltage protection Protection type:Constant voltage limiting, recovers automatically after fault condition is removed
Over temperature protection RTH5≧80°C Detect on heatsink of Q1, Q2 power transistor
Protection type:Shut down o/p voltage, recovers automatically after temperature goes down
Working temperature -10°C ~ +60°C (refer to output load derating curve)
Working humidity 20 ~ 90% RH non-condensing
Storage temp., humidity -20 ~ +85°C 10 ~ 95% RH
Vibration 10 ~ 500Hz, 2G 10 min./1 cycle, 60 min.each along X, Y, Z axes
MTBF 250.9K hrs min. MIL-HDBK-217F (25°C)
Safety standards CSA60950-1 (UL3101-1, IEC1010-1, EN61010-1) Approved
Withstand voltage I/P-O/P : 3 KV I/P-FG : 1.5KVAC O/P-FG : 0.5 KV 1 min.
Isolation resistance I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC
EMI conduction & radiation Compliance to EN55022 (CISPR22) Class B
Harmonic current Compliance to EN61000-3-2,-3
EMS immunity Compliance to EN61000-4-2,3,4; ENV50204, Light industry level, Criteria A
  • CE