Product News: Electrical Equipment & Systems

RFE2500 AC-DC Power Supplies suitable for 1U high package.

Press Release Summary:

RFE2500 AC-DC Power Supplies suitable for 1U high package.

Oct 28, 2016 - Permitting 8 connections in parallel, RFE2500 AC-DC power supplies come with rugged screw terminal and bus-bar connections. Measuring 107 x 41 x 345 mm, RFE2500 features AC Fail, DC Good, remote sense, 12 V 0.5 A auxiliary supply. With input of 85 to 265 VAC, output up to 2500 W and efficiency at 93 %, unit reduces waste heat dissipation, and are suitable for 1 U high racking systems requiring reliable 12 V, 24 V and 48 V bulk power.

TDK-Lambda Americas Inc. - National City, CA

Original Press Release

1U High Industrial Power Supplies Have PMBus(TM) Communications

Press release date: Oct 25, 2016

TDK Corporation announces the introduction of the TDK-Lambda brand RFE2500 AC-DC power supplies. Delivering up to 2500W output power in a low profile 1U package, the RFE series has rugged screw terminal and bus-bar connections. These industrial supplies are ideal for use in many applications requiring reliable 12V, 24V or 48V bulk power.

Operating efficiencies of 90 to 93% minimizes waste heat dissipation and eases system cooling requirements. With a universal input of 85 to 265VAC applications for the RFE2500 supplies include communications, factory automation, test, measurement, and broadcast/RF amplifiers.

The RFE2500 is fully featured with AC Fail, DC Good, remote on/off, remote sense, a 12V 0.5A auxiliary supply, +/-20% output voltage adjustment (by either front panel potentiometer, external resistance or a 0-5V signal) and over current set point programming. Up to eight units can be connected in parallel for higher power and internal ORing FETs allow redundant operation.

The units can operate at full load in ambient temperatures of up to 50oC, and deliver 50% load at 70oC. The case measures 107 x 41 x 345mm, making it suitable for 1U high racking systems and the weight is just 2.5kg. Cooling is provided by two internal temperature controlled fans to reduce acoustical noise.

Models with a “/S” suffix include an optional I2C/PMBus™ serial communications port for remote programming of the output voltage and remote on/off. In addition the output voltage, output current, internal temperature and status signals can be monitored.

Input to output isolation is 3kVAC, with all models certified to UL/CSA 60950-1, IEC/EN 60950-1 and carrying the CE mark for the Low Voltage and RoHS2 Directives. All units meet EN55011/EN55022-B conducted emissions (Class A radiated) and comply with IEC 61000-3-2 harmonics and IEC 61000-4 immunity standards.

More information can be obtained at the following TDK-Lambda Americas website,, or by calling 800-LAMBDA-4. Product availability for the RFE2500 power supplies can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock”) at

Major applications

Communications, factory automation, test, measurement and broadcast/RF amplifiers

Main features and benefits
• Compact 1U high package size
• Fully featured • Up to 93% efficient
• PMBus™ communications interface

Major specifications

Model                                                 RFE2500-12                    RFE2500-24                    RFE2500-48
Input voltage range         Vac                                                         85 – 265
Output voltages               Vdc                                                    12, 24 and 48
Maximum output power   W                    2400                                2304                               2496
(115 / 230Vac input)        %                  90 / 92                             90 / 92                             91 / 93
Communications              -                                             Optional PMBus™ interface
Safety Certifications         -                                             IEC / UL / CSA / EN 60950-1
Size (W x H x L) mm                                                              107 x 41 x 354
Warranty                          -                                                         Three years

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 2016, TDK posted total sales of USD 10.2 billion and employed about 92,000 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.

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