Released 2014

Features of CQHS2504832

• 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

CQH(1)  S(2)  250(3)  48(4)  50(5)  -  (6)  

(1) Series name
(2) Single output
(3) Output wattage
(4) Input voltage
  48: DC36 - 76V
(5) Output voltage
(6) Optional
  R: with Remote ON/OFF
    Positive logic control
  N: Auto restart in protection circuit working
  B: BasePlate option with Mounting hole M3
  L2: Pin length 5.3mm


Contents Specifications
Input Voltage DC36 - 76V
Output Wattage 252.8W
Voltage/Current 32V 7.9A
Adjustable  Voltage Range Fixed (TRM pin open), adjustable by external resistor
26.88 - 35.20V
Protection Circuit And Others Overcurrent Protection Works over 105% of rating, low voltage protection (shut down) function is built-in.
Overvoltage Protection 36.80 - 44.80V
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) 57.9x10.5x22.76mm [2.28x0.41x0.9 inches]
58.4x12.7x23.26mm [2.3x0.5x0.92 inches]*(BasePlate Option)
Weight 30g max
45g 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
  • * 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.