DC Input EMC Filter features 50 A rating.

Press Release Summary:

Enclosed in metal case, Model RDEN-048050 accepts input voltage up to 76 Vdc and will operate at 50 A in ambient temperature of -30 to 55°C, derating to 20 A at 85°C. With frequencies from 0.2–10 MHz, common mode attenuation is 30 dB and with frequencies from 0.7–30 MHz differential mode attenuation is 25 dB. Input to case (ground) isolation is 1,500 Vdc and isolation resistance is 500 MΩ at 500 Vdc. Measuring 90 x 60 x 30 mm, filter uses M5 studs for connections.

Original Press Release:

RDEN DC Input EMC Filter is Rated at 50A

TDK Corporation announces the introduction of the DC input TDK-Lambda RDEN-048050 EMC filter to complement the existing R series of AC input EMC filters.  The RDEN-048050 filter can accept an input voltage of up to 76VDC, and is rated for currents up to 50A.

Enclosed in a metal case, connections are made via rugged M5 studs for easy termination and the filter will operate at 50A in an ambient of -30 to 55oC, derating to 20A at 85oC.  With frequencies between 0.2 to 10MHz, common mode attenuation is 30dB and with frequencies between 0.7 to 30MHz differential mode attenuation is 25dB.

Input to case (ground) isolation is 1,500VDC and isolation resistance is 500MΩ at 500VDC.  The filter is certified to UL60950-1 and EN60939.  The package size, excluding terminals, is just 90mm in depth, 60mm wide and 30mm high.

More information can be obtained at the following TDK-Lambda Americas website, http://www.us.tdk-lambda.com/lp/products/rden-series,  or by calling 800-LAMBDA-4.  Product availability for the RDEN filter can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock to Buy”) at http://www.us.tdk-lambda.com/lp/.

Major applications

ICT equipment, measuring equipment, COTS and general industrial equipment

Main features and benefits

• Small package size

• Up to 50A output currents, suitable for reducing output noise in power supplies

• High attenuation

• Stud connections for ease of wiring





Input voltage range


0 to 76VDC

Maximum Rated Current





Common Mode: 30dB (0.2 ~ 10MHz)
Differential Mode: 25dB (0.7 ~ 30MHz)




Operating Ambient Temperature


-30 to +85°C (derating to 20A from 55 to 85°C)

Safety certifications


UL60950-1, EN60939

Size (L x W x H)


90 x 60 x 30mm (excluding terminals)


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 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 http://www.tdk-lambda.com/

Contacts for regional media


Tom Tillman

TDK-Lambda Americas

(619) 575 4400


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