TDK Lambda Americas Inc
TDK World Wide


Power Supply Products

50W Power Supplies Added to Five Year Warranty RWS-B Series

                                        RWS50B 24 White

San Diego, CA – July 2014 –

TDK Corporation announces the introduction of 50W models to the five year warranty TDK-Lambda RWS-B series of AC-DC power supplies, designed to provide solid performance at an economical price.  The product line up now has five power levels and compact case sizes, including 100, 150, 300 and 600W.

Operating from a universal input of 47-63Hz, 85-265Vac (300Vac for 5 seconds), the RWS50-B series is available with nominal outputs of 5, 12, 24 and 48Vdc with an adjustment range of a minimum of +/-10%.  The series is designed to meet a wide range of applications, including industrial, test & measurement, broadcast, communications and LED signage.

The convection cooled 50W models operate from -10oC to 70 oC with derating above 40 oC.  In addition over voltage and over current protection is included.

High operating efficiencies of up to 88% reduce internal waste heat and component temperatures, resulting in electrolytic capacitor service life ratings of at least ten years.

The TDK-Lambda RWS-B series is certified to the safety standards of UL/CSA 60950-1, UL508 (on certain models), is CE marked according to the Low Voltage, RoHS2 Directives, and additionally evaluated to EN 60950-1.  All models offer curve B conducted and radiated performance to EN55011/EN55022-B, FCC class B and VCCI-B.

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


Major applications

  • General industrial and commercial automation, test and measurement, broadcast, LED signage and communications equipment

Main features and benefits

  • Five Year Warranty
  • Compact case sizes
  • UL508 certified (5V, 12V & 24V models)
  • Long service life (conservative electrolytic capacitors ratings)onstant current or voltage operation

Major specifications




Input voltage range


85 to 265 (300Vac for   five seconds)

Nominal output voltages


5, 12, 24 & 48

Output power






Efficiency (24V output at   200Vac)



Operating ambient temperature


-10°C to +70°C  (Derating applies)



UL/CSA/EN   60950-1, UL508 (5V to 48V) CE Mark (LV & RoHS2)

Size (W x H x D)








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* which are 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 2014, TDK posted total sales of USD 9.6 billion and employed about 83,000 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

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.

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Editorial Contact:

David Norton VP Marketing
TDK-Lambda Americas Inc.
3055 Del Sol Blvd.
San Diego, CA 92154
Ph: 619-575-4400