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PD-2503 - 25W Dual Output Open Frame Power Supply



PD-2503 is a dual output open frame switching power supplies designed with short circuit, over load, over voltage and over temperature protections. PD-2503 offers +5V & +3.3V outputs and is a highly reliable open frame power supply with low leakage current and free air convection cooling.

Additional information







  • Universal AC input range
  • Low leakage current <0.5mA
  • Short circuit, over voltage, overload & over temperature protection
  • 100% full burn-in test
  • Fixed switching frequency at 100KHZ
  • Cooling by free air convection
Input Voltage85 ~ 264Vac; 120~370Vdc
Input Frequency47 ~ 63Hz
Input Current0.65A/115Vac 0.4A/230Vac
Inrush Current40A, cold start
Leakage Current<0.5mA/240Vac
Setup, Rise Time250mS, 50mS/230Vac 250mS, 30mS/115Vac at full load
Hold Time50mS/230Vac 16mS/115Vac at full load
Over Load Protection>105% rated output power
Hiccup mode, recovers automatically once fault condition removed
Over Voltage ProtectionShuts down output voltage, re-power on to recover
Over Temperature ProtectionTj 135°C typically (U1) Detect on main control IC
Shut down output voltage, auto recovery once temperature goes down
Working Temperature-10°C to +70°C, refer to derating curve
Working Humidity20 ~ 90% RH non-condensing
Storage Temperature, Humidity-20°C to +85°C, 10 ~ 95% RH
Temperature Coefficient±0.03%/°C (0 ~ 50°C) on primary output
Vibration10 ~ 500Hz, 2G 10min./1 cycle, Period for 60 mon. each along X, Y, Z axes
Safety StandardUL60950-1, TUV EN60950-1 Approved
Withstand VoltageI/P-0/P :3KV, I/P-FG:1.5KV, O/P-FG:0.2KVAC
Isolation ResistanceI/P-O/P, I/P-FG, O/P-FG:100MOhms/500VDC
EMC StandardsEN55022 (CISPR22) Class B, EN61000-3-2,3
EN61000-4-2,3,4,5, Light industry level, Criteria A
MTBF518.9Khrs min. MIL-HDBK-217F (25°C)
  • CB
  • CE
  • TUV