Released 2010
Warranty Period 5-year (Refer to Instruction Manuals)

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, please handle the unit with care
*Make sure necessary tests will be carried out on your end equipment with the power supply installed in accordance with any required EMC/EMI regulations.

Features of LFA300F-5-TY

• Small and compact PCB construction
• Built-in inrush current, overcurrent and overvoltage protection circuits
• Harmonic attenuator (Complies with IEC61000-3-2)
• Universal input (AC85-264V)
• Power factor correction (LFA50F-300F)
• Built-in reducing standby power circuit (LFA10F, 15F)

Ordering Information and Options

LF(1)  A(2)  300(3)  F(4)  -  (5)  -  (6)  

(1) Series name
(2) Single output
(3) Output wattage
(4) Universal input
(5) Output voltage
(6) Optional
  C: with Coating
  G: Low leakage current
  H: with the function to be acceptable to output peak current (only 24V, 30V, 36V and 48V)
  J: EP (Tyco Electronics) connector type (Except 3.3V and 5V)
  J1: VH (J.S.T.) connector type (Except 3.3V and 5V)
  R: with Remote ON/OFF
  R2: with Remote ON/OFF
  S: with Chassis
  SNF: with Chassis & cover & fan (Only 5V, 12V and 24V)
  T1: Horizontal terminal block
Please refer to Instruction manual 5.

Optional Parts


Recommended EMI Filters


Contents Specifications
Input Voltage AC85 - 264V 1Φ *
Output Wattage 300W
Voltage/Current 5V 40A Convection Cooling
5V 60A Forced Air Cooling
Adjustable  Voltage Range 4.50 - 5.50V
Protection Circuit And Others Overcurrent Protection Works over 105% of rating (works over 101% of peak current at option -H) and recovers automatically
Overvoltage Protection 5.75 to 7.00V
Remote ON/OFF Option (Refer to Instruction Manual)
Remote Sensing -
Others -
Operating Temperature/Humidity -10 to +70℃, 20 - 90%RH (Non condensing) *
Safety And Noise Regulations Agency Approvals (At only AC input) UL60950-1, C-UL (CSA60950-1) , EN60950-1, EN60065, EN50178 Complies with DEN-AN
Conducted Noise Complies with FCC-B, VCCI-B, CISPR-B, EN55011-B, EN55022-B
High Attenuation Complies with IEC61000-3-2 (Class A) *
Others Dimensions (WxHxD) 95x52.5x222mm [3.74x2.07x8.74 inches]
Weight 810g max (with chassis & cover: 1,270g max)
Cooling Method Convection/Forced air (Refer to Instruction Manual 3.1 and 3.2) *
Warranty Period 5-year (Refer to Instruction Manuals)
  • * For further information and how to use, please see in Cosel product catalog.

Block Diagram

Documents Download

Technical Data
  • * For another documents aren't listed, please feel free to contact to a Cosel representative.