Discontinued (November, 2022)

Released 1997
Rated Input: AC85 - 132V/170 - 264V 1Φ
Rated Output Wattage: 300W
Rated Output Voltage: 3V,5V,9V,12V,15V,18V,24V,30V,48V
Warranty Period 2-year

This power supply is manufactured by SMD technology. The stress to P.C.B like twisting or bending causes the defect of the unit, so handle the unit with care.

Recommended Model for Replacement

Type Model Name Released Catalog
Instruction Manuals
Documents for replacement
Open Frame type LHP300F 2021
  • Catalog
  • Instruction Manuals
  • Open Frame type LHA300F 2019
  • Catalog
  • Instruction Manuals
    • * For further information and how to use, please see in Cosel product catalog.

    Features of LDA300W

    • Rugged PCB type (CEM3)
    • Input range
    LDA10 - 75F (AC85 - 264V)
    LDA100 - 300W (AC85 - 132V/AC170 - 264V)
    Autoranging input
    • Built-in inrush current limiting, overcurrent and overvoltage protection circuits

    Ordering Information and Options

    LDA(1)  300(2)  W(3)  -  5(4)  -  (5)  

    (1) Series name
    (2) Output wattage
    (3) Autoranging input
    (4) Output voltage
    (5) Optional *
      C: with Coating
      G: Low leakage current
      L: with LED
      R: with Remote ON/OFF
      S: with Chassis
      SNF: with Chassis & cover & fan
      T: Vertical terminal block
    *Please contact us about safety approvals for the model with option.

    Recommended EMI Filters

    Product Line-up

    Product Name Output Wattage Output Voltage・Current
    LDA300W-3 180W 3V 60A
    LDA300W-5 300W 5V 60A
    LDA300W-9 306W 9V 34A
    LDA300W-12 324W 12V 27A
    LDA300W-15 330W 15V 22A
    LDA300W-18 306W 18V 17A
    LDA300W-24 336W 24V 14A
    LDA300W-30 300W 30V 10A
    LDA300W-48 302.4W 48V 6.3A
    • * For further information and how to use, please see in Cosel product catalog.

    Optional Parts


    Category Part Number Description PDF DXF
    H-IN-7 Mating harness for input with J option. (Mfr : Tyco Electronics) -
    H-OU-22 Mating harness for output with J option. (Mfr : Tyco Electronics) -
    H-RC-1 Harness for using option : -R. -
    Table1 Product Status Information
    No. Product Status Definition
    1 New Product New Product. Recommended for new design.
    2 Recommended Recommended for new design.
    3 blank Product in mass production
    4 NRND Not recommended for new design.
    5 To be discontinued PDN (Product Discontinuation Notice) is issued and LTB (Last Time Buy) is under consideration.
    6 Discontinued LTB order is no longer available.