Discontinued (May, 2023)

Released 2003
Warranty Period 5-year

* The size of the Base plate option is 1/4Brick size (57.9x36.8mm).

Recommended Model for Replacement

Type Product Name Released Catalog
Instruction Manuals
Documents for replacement
Bus Converter・Power Module type CHS1204812 2016
  • Catalog
  • Instruction Manuals
    • * For further information and how to use, please see in Cosel product catalog.

    Features of CES48120-7P

    • Compact DC-DC Converter, "BRICK SIZE" which has been standard size for Telecommunication Market
    • High efficiency
    • High density
    • High reliability: not built-in aluminum and tantalum electrolytic capacitor
    • Built-in overcurrent, overvoltage and thermal protection circuits
    • Built-in remote ON/OFF

    Ordering Information and Options

    CE(1)  S(2)  48(3)  033(4)  -  30(5)  P(6)  -  (7)  

    (1) Series name
    (2) Single output
    (3) Input voltage
      48: DC36 - 76V
    (4) Output voltage
      033: 3.3V
      050: 5.0V
      120: 12V
    (5) Output current
    (6) type
      P: Conduction Cooling
    (7) Optional
      R: with Remote ON/OFF
        Positive logic control
      N: Auto restart from thermal protection
      B: BasePlate option
        (Mounting hole M3)
      BT: BasePlate option
        (Mounting hole φ3.4 thru)


    Contents Specifications
    Input Voltage DC36 - 76V
    Output Wattage 84.0W
    Voltage/Current 12V 7.0A
    Adjustable  Voltage Range Fixed (TRM pin open), adjustable by external resistor
    Protection Circuit And Others Overcurrent Protection Works over 105% of rating, low voltage protection (shut down) function is built-in.
    Overvoltage Protection 115% - 135%
    Remote ON/OFF Provided (Negative logic L: ON, H: OFF)
    Remote Sensing Provided
    Others -
    Operating Temperature/Humidity -40 to +85℃, 20 to 95%RH (Non condensing) *
    Safety And Noise Regulations Agency Approvals (At only AC input) UL60950-1, C-UL (CSA60950-1) , EN62368-1
    Conducted Noise -
    High Attenuation -
    Others Dimensions (WxHxD) 57.9x8.5x22.76mm [2.28x0.33x0.9 inches]
    57.9x12.7x36.8mm [2.28x0.5x1.45 inches]
    Weight 26g max
    50g max *
    Cooling Method Convection/Forced air/Conduction
    Warranty Period 5-year
    • * For further information and how to use, please see in Cosel product catalog.

    Documents Download

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