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2007 Energy Independence and Security Act

CUI power supplies

In order to comply with the Energy Independence and Security Act of 2007, as of April 15, 2008, CUI will no longer accept orders for or manufacture power supplies that do not meet the mandated requirements. These items can be identified as all CUI linear or switching adapters with part numbers starting with the letter “D,” such as part number DPD120050-P5P-SZ. This will immediately affect those customers who currently purchase these types of adapters from us or are working with us on new products of this kind.

For those customers who currently source adapters from us that will not meet the new federal requirements, we are strongly encouraging a review of their current demands and are offering a one time last buy of the original product before April 15, 2008.

As we navigate through this change, our priority is to offer our customers as much sales and technical support as possible to assist them in finding power supply solutions that are compliant with the new standards. CUI currently offers a full line of adapters that do meet the new federal efficiency standards. Power supplies that comply with the new standards can be identified by a part number beginning with the letter “E,” such as part number EMS120150-P5P-SZ. We also have over 60 models offered for immediate purchase through Digi-Key Corporation and are currently working on expanding those offerings.

>>view all power supplies currently in compliance

>>view all Digi-Key inventory currently in compliance

Information about the Energy Act

The Energy Independence and Security Act of 2007 was passed in December of 2007 and addresses minimum efficiency standards for external power supplies, also known as linear or switching adapters. This law stipulates that external power supplies manufactured on July 1, 2008 and beyond meet certain minimum efficiency criteria as defined below.

Link to full-text of the Energy Independence and Security act of 2007 (pdf) >>GO
   go to section 301 for information on external adapters

Minimum efficiency criteria

Active mode is defined as when the power supply’s input is connected to line voltage ac and its output is connected to a dc or ac load drawing a portion of the product’s power output. Depending on the power rating for the power supply, it must meet the minimum efficiency criteria outlined below.

Energy-Efficiency Criteria for Active Mode:
output power on adapter label
minimum average efficiency percentage
0 to ≤ less than 1 watt
≥ 0.50 * output power on adapter label
> 1 to ≤ 51 watts
≥ [0.09 * Ln (output power on adapter label )] + 0.50
> 51 watts
≥ 0.85

The power supply must also meet a requirement for when its input is connected to a line voltage ac but its output is not connected to a load. Depending on the power output of the supply, it must keep its energy consumption below the following values.

Energy Consumption Criteria for No Load Mode:
output power on adapter label
maximum power consumption in no-load mode
0 to < 250 watts
≤ 0.5 watts
 
 

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