AC/DC Power Supplies target distributed power applications.

Press Release Summary:

Available in 1,200, 1,600, and 2,000 W models, D1U-W Series front-end power supplies are 1U high, RoHS-compliant, hot-pluggable, and support redundant applications. Units feature 12 or 48 V main output with 3.3, 5, or 12 V standby voltage options. They provide active current sharing on main output, I2C bus with status indicators, plus over-voltage and over-temperature protection. Measuring 304.8 x 120.7 x 40.6 mm, power supplies operate from 0-50°C.

Original Press Release:

AC/DC Front-End Power Supplies Provide Improved Efficiency and Energy Cost Savings for Distributed Power Applications

November 9th 2006, Mansfield, MA - C&D Technologies has added a 48V family to its class leading D1U-W AC/DC front-end power supply product line. The range, which already has a 12V series, is designed to deliver high efficiency bulk power to servers, workstations, and storage systems that utilize distributed power architectures.

The D1U series consists of 1200W, 1600W and 2000W (220VAC) output power models that are 1U high, RoHS compliant, hot pluggable, and support redundant applications.

The new range uses a combination of proven topology and high density board mount power packaging techniques to maximize space utilization and deliver high efficiency, power density and enhanced reliability. The series supports a 12V or 48V main output with 3.3 V, 5V or 12V standby voltage options.

Built-in cooling fans simplify integration into customer applications and give the D1U-W series excellent thermal performance in a wide range of operating conditions. The product provides active current sharing on the main output, an I2C bus with status indicators, plus over-voltage and over-temperature protection.

Overall dimensions of the D1U-W series are 304.8mm x 120.7mm x 40.6mm. Operating temperature range is 0ºC to 50ºC.

An optional 1U high 19inch wide powershelf allows three D1U-W units to be packaged together delivering up to 4.8kW of power for 1200W and 1600W variants, and 6.0kW for 2000W models. Power densities are 13.2W/cu.In., 17.5W/cu.In. and 21.9W/cu.In. , respectively.

Unit pricing for the C&D Technologies D1U's is approximately $530 in OEM quantities (USA, 100-piece pricing), and delivery is from stock to 14 weeks. Note: The datasheet for this product can be found by visiting

Contact details to be published:
C&D Technologies, Inc
Power Electronics Division
11 Cabot Boulevard
Mansfield, MA 02048-1151, USA
Tel: 1+ 508.339.3000 Fax: 1+ 508.339.6356
Product URL:

About C&D Technologies
C&D Technologies, Inc. is a technology company that produces and markets systems for the conversion and storage of electrical power, including telecom/industrial batteries, rectifiers and electronics. Corporate headquarters are in Blue Bell, Pennsylvania, USA and the company is traded on the NYSE under the symbol 'CHP'.

The Power Electronics Division of C&D Technologies, Inc. ( is headquartered in Mansfield, Massachusetts. The division designs, manufactures and distributes DC/DC Converters, AC/DC Power Supplies, Magnetics, Data Acquisition devices and Panel Meters, and offers these products in custom, standard and modified-standard variations. These products, which are built to exacting requirements in ISO9000:2000-approved facilities, are typically used worldwide within telecommunications, computing, industrial and other high-tech applications.

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