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Ultra Low Noise Switching Power Supply



  • Ultra Low Ripple & Noise 10mVp-p
  • Low Leakage Current 60uA to 200uA
  • Universal Input
  • Approved Safety Standards
  • Meet EMC Safety Standards
  • RoHS Free, Vinyl Chloride Free, Halogen Free (PCB)


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Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Input Input Voltage Range Rating 100-240Vac Single Phase * Range : 85Vac to 264Vac
Frequency Range Rating : 50/60Hz, * Range : 47Hz to 63Hz
Input Current 100VAC / 200VAC * 1 5Vout: 1.4A / 0.7A at Full Load, 12/15/24/30/48Vout: 2.0A/1.0A at Full Load
Efficiency 100VAC / 200VAC * 1 80% / 81% 85% / 87% 86% / 88% 87% / 89% 87% / 89% 87% / 89%
Inrush Current 100VAC / 200VAC * 1 20A / 40A * When it operates under cold start
Leakage Current 60uA @ 100Vac, 60Hz / 150uA @ 240Vac, 60Hz / 200uA @ 264V, 60Hz
Power Factor
[ AC100Vin / 200Vin ]
0.98 / 0.91 0.98 / 0.93
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Output DC Output Voltage 5V 12V 15V 24V 30V 48V
Output Current 20.0A 12.5A 10.0A 6.3A 5.0A 3.2A
Maximum Output Power 100.0W 150.0W 151.2W 150.0W 153.6W
Line Regulation / Load Regulation [Max] 40mV / 80mV 48mV / 96mV 60mV / 120mV 96mV / 150mV 120mV / 188mV 192mV / 300mV
Ripple & Noise * 2 10mVp-p
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Other Feature OCP * 3 > 110% ( Shut down output)
OVP * 3 > 115% (Shut down output)
Remote Sensing Available
Remote Control Available
Operation Indicator LED lighting
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Mechanical Cooling System Convection
Size 100 x 43 x 194 mm (Without terminal stand)
Weight 680 g
Input & Output Terminal / Signal Terminal Screw terminal
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Others Noise Immunity EN61000-4-2, -3, -4, -5, -6, -8, -11
Conduction Noise EN55022-B, FCC-B, VCCI-B
Safety Certifications UL60601-1, EN60601-1, CSA-C22.2 NO. 601.1-M90 UL60950-1, CSA-C22.2, NO. 60950-1, EN60950-1
CE Marking (low voltage directive), Nemko
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Environmental Condition Operating Temperature / Humidity - 10 degree C to + 60 degree C * With output / 30%RH to 90% RH * Non Condensing
Storage Temperature / Humidity - 20 degree C to + 85 degree C / 10%RH to 95% RH * Non Condensing
Vibration Resistance 19.6m/s 2 10 to 55Hz 1minute Period 1hour for each X, Y, Z direction
Shock Resistance < 196.1m/s 2 11ms 1 time for each X, Y, Z direction
Model Number HFS150A-5 HFS150A-12 HFS150A-15 HFS150A-24 HFS150A-30 HFS150A-48
Isolation Isolation Voltage Input. Output : AC4KV for 1min Cut off current 20mA * Under normal temp & humidity condition
Input. FG : AC2KV for 1min Cut off current 20mA * Under normal temp & humidity condition
Output.FG : AC500V for 1min Cut off current 20mA * Under normal temp & humidity condition
Isolation Resistance Input. Output , Input.FG, Output.FG DC500V >100M ohm

*1 Conditions: Ta = 25 degree C
*2 JEITA specified measuring method
*3 Upon over voltage or over current conditions, input power must be removed to allow unit reset to occur within a few minutes.
Note: Derating is required by operating temperature. Follow the overload and specification in manual to avoid the damage of power supply.




  • Warning: Large capacitive load should be applied or removed only with NO AC power applied. Large inrush current may result in damage.
  • Incorrect operation will damage Power Supply.

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