Dimensions : 140 x 150 x 86mm
Application : For standard, advanced server, communication and industrial power system.
Watt : 400W


FSP400-70PFB(24V) is an industrial level of switching power supply. The power supply comes to offer the total power capacity up to 400 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, communication and industrial power system.


  • Low Ripple & Noise
  • Output over voltage protection
  • Short circuit protection on all outputs
  • Resettable power shut down
  • 100% burn-in under high ambient temperature(50℃)
  • Vacuum-impregnated transformer
  • MTBF:100K hours at 25℃
  • 100% Hi-pot tested
  • Line input fuse protection

Model Name FSP400-70PFB(24V)
Wattage 400W
Dimension 140mm (L) × 150 mm (W) × 86mm (H)
Product Highlight Efficiency Level NON-80PLUS
Altitude N/A
PMBus For standard, advanced server, communication and industrial power system.
General Specification Voltage Regulation +3.3V, +12V, +5V, +5SB, +24V: ±5%
-12V, -5V: ±10%
Input Electrical Specification Input Frequency 47 ~ 63 Hz
Input Current 115V@ 6.0 Amps-rms maximum
230V@ 3.0 Amps-rms maximum
Output Specification Hold-up time 115V/60Hz 18mSec. Minimum@100% Load,
230V/50Hz 18mSec. Minimum@100% Load
Ouput Voltage Regulation +3.3Vdc output : +3.5 Vdc minimum, + 4.5Vdc maximum
+5Vdc output : +5.5 Vdc minimum, + 6.82Vdc maximum
+5Vsb output : +5.5 Vdc minimum, + 7.5Vdc maximum
+12Vdc output : +13.4 Vdc minimum, + 15.6Vdc maximum
+24Vsb output : +26.4 Vdc minimum, + 29Vdc 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:120mV p-p
5Vsb:50mV p-p
-5V:100mV p-p
24V:240mV p-p
Environmental Requirement Temperature Range Operating : 0 to +50℃
Storage :-20 to +80℃
Humidity Operating : 5-95% to % RH, Non-condensing
Storage : 5-95% 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℃, maximum-output load, and nominal AC inout voltage

Output Voltage and Current Rating

+3.3V +5V +12V1 -12V +24V -5V +5Vsb
Ripple-Noise(R-P) mV 50mV 50mV 120mV 120mV 240mV 100mV 50mV
Regulation Load % ±5% ±5% ±5% ±10% ±5% ±10% ±5%
Output Max.(A) 10A 18A 16A 0.5A 5A 0.3A 2A
Output Min.(A) 0.5A 0.5A 1A 0A 0.3A 0A 0A


  • 5V, 3.3V, 12V, -12V Will gave the regulation to 10% when all load take off.
  • The +3.3V, +5V and +12V1 and 24V total output shall not exceed 385 watts.
  • The +3.3V and +5V total output shall not exceed 110 watts.
  • The total output shall not exceed 400 watts

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