Product News: Electrical Equipment & Systems

AC-DC Power Supplies provide 91% efficiency at full load.

Press Release Summary:

AC-DC Power Supplies provide 91% efficiency at full load.

Feb 26, 2014 - Operating from universal input of 85–265 Vac, HWS-A Series includes 5 power levels of 15, 30, 50, 100, and 150 W with nominal outputs of 3.3, 5, 12, 15, 24, and 48 Vdc. Models rated at 50, 100, and 150 W feature active power factor correction, and all models are EN61000-3-2 compliant. Convection-cooled power supplies operate from -10 to +50°C at full load, and up to 70°C with appropriate derating. All meet EN55011/EN55022 and FCC curve B requirements for conducted and radiated EMI.

TDK-Lambda Americas Inc. - National City, CA

Original Press Release

HWS-A Offers Significant Performance Improvements to Established HWS

Press release date: Feb 01, 2014

TDK Corporation announces the introduction of the TDK-Lambda HWS-A series of AC-DC power supplies, comprising of five power levels rated from 15-150W. The HWS-A is a significant refresh of the established HWS series, which was originally introduced in 2005, and is completely form, fit and function compatible with the existing series to enable an easy upgrade.

The new series achieves up to a 3% efficiency improvement at full load (up to 91%), and up to a 4% improvement at low loads. Off-load power consumption is considerably reduced, thereby contributing to a reduction in environmental impact.  Product weight has also been reduced by up to 12%.

Operating from a universal input of 85-265Vac (47-63Hz), the 15, 30, 50, 100 and 150W models are available with nominal outputs of 3.3, 5, 12, 15, 24 and 48Vdc. The 50, 100 and 150W HWS-A models include active power factor correction and all models are compliant EN61000-3-2. The operating temperature range is wider than its predecessor; from -10 to +50°C at full load, and up to 70°C with appropriate derating.

All models meet EN55011/EN55022 and FCC curve B requirements for conducted and radiated EMI and at high line input, the HWS-A meets the requirements of SEMI F47. The TDK-Lambda HWS-A series is approved to the safety standards of UL/CSA/EN 60950-1, UL508 (with cover), is CE marked according to the LV and RoHS Directives and comes with a limited lifetime warranty.

More information can be obtained at the following TDK-Lambda Americas website,, or by calling 800-LAMBDA-4.  Product availability for the HWS-A series can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock to Buy”) at

Major applications
Industrial equipment used for factory automation, process control, LED signage, test and measurement, broadcast and communications.
Main features and benefits
• Up to 91% efficient
• Reduced off-load power consumption
• Improved output derating with cover
• Lighter weight

Major specifications
Model HWS15A HWS30A HWS50A HWS100A HWS150A
Input voltage range - 85 to 265vac (300vac for 5s), 120 to 370vdc
Nominal output voltages Vdc 3.3, 5, 12, 15, 24 & 48V
Efficiency (200Vac Typical)% 85% 88% 87% 89% 90%
Maximum output power W 15W 30W 50W 100W 150W
Cooling Convection cooling
Operating temperature -10 to +70°C (with derating above 50°)  
 Safety UL/CSA/EN 60950-1, UL508 (with cover), CE Mark (LVD & RoHS)
Size (W x H x D) mm 26.5×82×80 26.5×82×95 26.5×82×120 28×82×160 37×82×160
Warranty Limited Lifetime
About TDK Corporation
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes electronic components, modules and systems* marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2013, TDK posted total sales of USD 9.1 billion and employed about 80,000 people worldwide.

* The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.

About TDK-Lambda Corporation
TDK-Lambda Corporation, a group company of TDK Corporation, is a leading global power supply company providing highly reliable power supplies for industrial equipment worldwide. TDK-Lambda Corporation meets the various needs of customers with our entire range of activities, from research and development through to manufacturing, sales, and service with bases in five key areas, covering Japan, Europe, America, China, and Asia.

For more details, please pay a visit to

Contacts for regional media
Region Contact 
Americas David Norton
TDK-Lambda Americas
(619) 575 4400