Released 2014
Rated Input: DC36 - 76V
Rated Output Wattage: 250W
Rated Output Voltage: 32V,50V
Warranty Period 5-year

Features of CQHS250

• 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

Product Line-up

Product Name Output Wattage Output Voltage・Current
CQHS2504832 252.8W 32V 7.9A
CQHS2504850 250W 50V 5.0A
  • * For further information and how to use, please see in Cosel product catalog.
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.