Dimensions : 190 x 150 x 84mm
Application : For standard, advanced server and storage power system.
Watt : 350W


FSP350-50MRA(S) is an industrial level of switching power supply. The power supply comes to offer the total power capacity up to 350 Watts, and uses unique active PFC (Power Factor Correction) circuit design with its high-load electrical components, makes it to be perfectly used in an industrial environment. In addition, with its full range of input and output electrical features, the power supply is ideally the best choice for server, workstation, communication or any other automation applications to use. The product also complies with the latest safety and EMC standards, which is perfectly to meet various regulations worldwide.


For standard, advanced server and storage power system.


  • Remarkable power density
  • Excellent redundant PSU efficiency
  • Well working performance at 50℃ (24 house running)
  • Low ripple and noise
  • Support OTP, OVP, OCP and SCP circuit protection
  • Comply with FCC, CB, TUV, CE and CCC certification or declaration requirement

Model Name FSP350-50MRA(S)
Wattage 350W
Dimension 190mm (L) × 150 mm (W) × 84mm (H)
Product Highlight Efficiency Level 80 Plus Gold
Altitude 5000M
PMBus V1.2
General Specification Effciency 92% 230VAC
Voltage Regulation +3.3V, +12V, +5V, +5SB: ±5%
-12V, -5V: ±10%
Input Electrical Specification Input Frequency 47 ~ 63 Hz
Input Current 115V@ 8.0 Amps-rms maximum,
230V@ 4.0Amps-rms maximum
Output Specification Hold-up time 115V/60Hz 16mSec. Minimum@full% Load,
230V/50Hz 16mSec. Minimum@full% Load
Ouput Voltage Regulation +3.3Vdc output : +3.135 Vdc minimum, + 3.46Vdc maximum
+5Vdc output : +4.75 Vdc minimum, + 5.25Vdc maximum
+12Vdc output : +11.4 Vdc minimum, + 12.6Vdc maximum
Ripple & Noise 115V-rms/230V-rms 5V 20ms Maximum
115V-rms/230V-rms 12V 20ms Maximum
Over current protection 3.3V:50mV p-p
5V:50mV p-p
12V1:120mV p-p
-12V:200mV p-p
5Vsb:50mV p-p
-5V:200mV p-p
Environmental Requirement Temperature Range Operating : 0 to +50℃
Storage :-20 to +80℃
Humidity Operating : 85% to % RH, Non-condensing
Storage : 95% to % RH, Non-condensing
MBTF The power supply have a minimum predicted MTBF(MIL-HDBK-217) of 100,000 hours of continuous operation at 25℃, 75% output load, and nominal AC inout voltage

Output Voltage and Current Rating

+3.3V +5V +12V1 -12V -5V +5Vsb
Ripple-Noise(R-P) mV 50mV 50mV 120mV 200mV 200mV 50mV
Regulation Load % ±5% ±5% ±5% ±10% ±10% ±5%
Output Max.(A) 20A 20A 29A 0.5A 0.3A 2A
Output Min.(A) 0A 0A 1A 0A 0A 0A


  • 5V, 3.3V, 12V, -12V Will gave the regulation to 10% when all load take off.
  • The +3.3V and +5V total output shall not exceed 130 watts.
  • -5V is optional.

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