Daitron offers a 50W version of Ultra Low Noise Power Supply model. You can choose 5V,12V, 15V, 24V, 30V or 48Voutput voltage option.
All these voltage output models have ultra low ripple noise
This model is the ideal solution for engineers who need extremely low noise for your sensitive applications.
This feature can bring engineers small, light weight and high efficiency with ultra low noise feature.
You may replace linear power supplies with our ultra low noise switching power supply products.
Low conduction noise and low EMI feature can also save your resources in EMI design.

Main Feature

・Output Power:50W
・Output Voltage (DC):5V,12V, 15V, 24V, 30V, 48V
・Ripple Noise:10mVp-p
・Reinforced insulation
・Dimension (W x H x D):82 x 40 x 141 mm * without terminal block
・Leakage Current:50μA @100Vac, 60Hz


・Nano Technology Instruments
・Medical Diagnosis
・Inspection Machine
・Audio Equipment
・RF transceiver

Document Download

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Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
InputInput Voltage RangeRating 100-240Vac (Range:85~264Vac)
Frequency RangeRating 50/60Hz (Range:47Hz~63Hz)
Input Current(*1)ACIN 100V / 200V0.7A / 0.4A (Io=100%)
Inrush Current(*1)ACIN 100V / 200V20A / 40A
Efficiency(*1)ACIN 100V / 200V80% / 82%85% / 87%86% / 88%87% / 89%87% / 89%88% / 90%
Power factor(*1)ACIN 100V / 200V0.97 / 0.86
Leakage CurrentACIN 100V /240V / 264V(60Hz)0.05mA typ / 0.12mA typ / 0.15mA max
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
OutputDC Output Voltage5Vdc12Vdc15Vdc24Vdc30Vdc48Vdc
DC Output Voltage Variable Range4.5~6.0V10.8~13.2V13.5~16.5V21.6~26.4V27.0~33.0V43.2~52.8V
Output Current10A4.2A3.4A2.1A1.7A1.1A
Maximum Output Power50.0W50.4W51.0W50.4W51.0W52.8W
Line Regulation / Load Regulation [Max]40mV / 80mV48mV / 96mV60mV / 120mV96mV / 150mV120mV / 188mV192mV / 300mV
Ripple Noise(*2)10mV typ
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
Other FeatureOCP(*3)> 110% (Shut down output)
OVP(*3)> 115% (Shut down output)
OtherRemote Sensing , Remote Control , Remote Output Voltage Control
Operation IndicatorLED lighting
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
MechanicalCooling SystemConvection
Size(W×H×D) , Weight82 x 40 x 141 mm / 3.23” x 1.57” x 5.55” inch ( Without terminal stand ) , 400g
Input & Output Terminal / Signal TerminalScrew terminal / Connector
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
Enviromental ConditionOperating temparature / Humidity(*4)‘-10 ℃ ~ 60℃ (With output) / 30%RH ~ 90%RH (Non Condensing)
Operating atmospheric pressure range (IEC60601-1)700hPa~1060hPa
Strage Temparature / Humidity‘-20℃ ~ 85℃ / 10%RH ~ 95%RH (Non Condensing)
Vibration Resistance19.6m/s2  (10~55Hz 1minute Period 1hour for each X,Y,Z direction)
Shock Resistance196.1m/s2 11ms 1time for X,Y,Z direction
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
IsolationIsolation VoltageINPUT – FG : 2kVac(20mA) 1min , INPUT – OUTPUT : 4kVac(20mA) 1min
OUTPUT – FG : 500Vac(20mA) 1min
Isolation ResistanceINPUT-FG , INPUT-OUTPUT , OUTPUT-FG DC500V >100MΩ
Model NumberLFS50A-5LFS50A-12LFS50A-15LFS50A-24LFS50A-30LFS50A-48
OthersElectrostatic Discharge Immunity TestEN61000-4-2 Compliance
Radiated Radio-Frequency Electromagnetic Field TestEN61000-4-3 Complicance
Electrical fast Transient / Burst Immunity TestEN61000-4-4 Complicance
Surge Immunity TestEN61000-4-5 Compliance
Conducted Disturbances Inducted by Radio-frequency Immunity TestEN61000-4-6 Compliance
Power Frequency Magnetic Field Immunity TestEN61000-4-8 Compliance
Voltage Dips,short interruptions , voltage variations immunity tests.EN61000-4-11 Complicance
Conducted EmissionEN55022-B, FCC-B, VCCI-B Compliance
Safety CertificationsUL62368-1, CAN/CSA-C22.2 NO.62368-1, EN62368-1Certification PSE Compliance
ANSI/AAMI ES60601-1, CAN/CSA-C22.2 No.60601-1, EN60601-1Certification
UL File NoE237238(UL62368-1)、E320635(ES60601-1)
CE MarkingLow voltage directive
Harmonic Current CharacteristicsEN61000-3-2 (CLASS A) Compliance
(1)Conditions:Ta=25 degree C Typical value at maximum output power (Inrush current value doesn’t include part of within 0.1msec to input filter) (2)The typical ripple voltage in the standard specification is a value measured using 100MHz oscilloscope in the anechoic chamber under the JEITA measuring method(Condition:Ta=25℃,Vin=100Vac Typical value at rated output)
(3)Upon over voltage or over current conditions, input power must be removed to allow unit reset to occur within a few minutes. (4)Derating is required by operating temperature. Follow the overload and specification in manual to avoid the damage of power supply.
※This power supply is intended to be used as a component of a larger system of electrical equipment.
 User is responsible for the safe design when this product is to be integrated in the equipment which reqires particularly high quality and reliability and there is a possibility to endanger persons or property by a failure or malfunction of this product.

Mechanical Drawings

Mechanical Drawings


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