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NFM-05 Series - 05W Single Output On-board Type Medical PSU



Featuring class II isolation levels they can be equiped into non-patient contact medical equipment and still comply with class B as per EMI regulations. With energy saving and the environment in mind the no load power consumption is lower than 0.5W so that it complies with the requirements for “green mode” power supplies. Standard functions include short circuit, over load and over voltage protections and over temperature protection is equipped on the whole NFM series. Suitable for use in general medical or for industrial usage that require low leakage current, general electronic applications and low profile IT equipment these on-board type PSU’s can be applied on the main control PCB of the final systems.

Additional information







  • Universal AC input/full range
  • Ultra low profile
  • Isolation class II
  • No load power consumption <0.5W
  • Short circuit, OLP, OVP & OTP
  • Compliance to UL60601-1 & TUV EN60601-1 medical standards
  • Cooling by free air convection
  • Non-patient contact medical
  • General electronics
  • IT equipment
  • Industrial
Input Voltage85 ~ 264VAC 120 ~ 370VDC
Input Frequency47 ~ 440Hz
AC Current0.12A/115VAC 0.08A/230VAC
Inrush Current25A/115VAC 45A/230VAC typically, cold start
Setup, Rise Time1000ms, 20ms/230VAC 1000ms, 20ms/115VAC at full load
Holdup Time100ms/230VAC 20ms/115VAC typically at full load
Overload ProtectionAbove 105% rated output power
Hiccup mode, recovers automatically after fault condition is removed
Over Voltage ProtectionProtection type Shut off
Over Temperature ProtectionTj 145°C typically (U1) Detect on main control IC
Shut down o/p voltage, recovers automatically after temperature goes down
Working Temperature-20°C to +70°C (Refer to output load derating curve)
Working Humidity20 ~ 90% RH non-condensing
Storage Temperature, Humidity-40°C to +85°C, 10 to 95% RH
Temp Coefficient±0.03%/°C (0 ~ 50°C)
Vibration10 ~ 500Hz, 2G 10min./1cycle, Period for 60min.each along X, Y, Z axes
Satety StandardsUL60601-1,TUV EN60601-1 Approved
Withstand VoltageI/P-O/P:4KVAC
Isolation ResistanceI/P-O/P:100M Ohms/500VDC
EMCCompliance to EN55011(CISPR11),EN55022 (CISPR22) Class B, EN61000-3-2,-3
EN61000-4-2,3,4,5,6,8,11; ENV50204, EN55024, EN60601-1-2, EN61204-3 Medical level, criteria A.
MTBF738.7Khrs min. MIL-HDBK-217F (25°C)
Dimensions58 x 45 x 19.1mm
Part CodeVoltageRated CurrentCurrent RangeRated PowerR&NVolt. Adj.
NFM-05-3.33.3V1.25A0 ~ 1.25A4.125W80mV3 ~ 3.63V
NFM-05-55V1A0 ~ 1A5W80mV4.5 ~ 5.5V
NFM-05-1212V0.42A0 ~ 0.42A5.04W150mV10.8 ~ 13.2V
NFM-05-1515V0.33A0 ~ 0.33A4.95W150mV13.5 ~ 16.5V
NFM-05-2424V0.23A0 ~ 0.23A5.52W240mV21.6 ~ 26.4V
Part CodeTol.Line Reg.Load Reg.Eff.OVP
NFM-05-3.3±2.0%±1.0%±1.5%67%3.8 ~ 4.95V
NFM-05-5±2.0%±1.0%±1.5%71%5.75 ~ 6.75V
NFM-05-12±1.0%±0.5%±0.5%73%13.8 ~ 16.2V
NFM-05-15±1.0%±0.5%±0.5%76%17.25 ~ 20.25V
NFM-05-24±1.0%±0.5%±0.5%76%27.6 ~ 32.4V
  • CB
  • CE
  • TUVMedical