New EMC Filters with Rating of +/- 40VDC at 20A

Press Release Summary:

  • Designed with high differential and common mode noise attenuation
  • Available with standard production screening and baseplate temperature rating of -40°C to +115°C
  • Suitable for harsh and demanding environments, including MIL-COTS vehicle and airborne applications

Original Press Release:

20A 40Vdc MIL-COTS EMI Filters Simplify Compliance to MIL-STD-461G, MIL-STD-1275D and RTCA/DO-160G

TDK Corporation announces the introduction of the TDK-Lambda FQA series of EMC filters, with a rating of +/-40Vdc at 20A. The FQA has a rugged encapsulated quarter-brick package with a choice of flanged or non-flanged baseplates. These modules are suitable for use in a wide variety of harsh and demanding environments, including MIL-COTS vehicle and airborne applications.

The FQA series is designed with a high differential and common mode noise attenuation. This simplifies system level compliance to MIL-STD-461G standards. The modules also provide input spike protection to MIL-STD-1275D and RTCA/DO-160G. Qualifying testing is consistent with MIL-STD-883F and MIL-STD-202G.

The PCB mount FQA can be cooled using either an industry standard ¼ brick heatsink, or conduction cooled via a cold plate. The non-flanged package size measures 60.6 x 39 x 12.7mm (L x W x H) and the flanged version 60.6 x 55.9 x 12.7mm. The total DC resistance of the filter is typically 12mΩ, minimizing power losses.

The filters are available with standard production screening (-S suffix) and a baseplate temperature rating of -40°C to +115°C, or with enhanced screening (-M suffix) and an extended temperature rating of -55°C to +115°C. Enhanced screening includes functional testing at high and low temperatures and a 96 hour burn-in period with temperature cycling.

All models have been safety certified to UL 60950-1, CAN/CSA C22.2 No. 60950-1-07 and IEC 60950-1, IEC/UL/CSA 62368-1 (pending) and carry the CE mark.

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

Major applications

Harsh and demanding environments, including MIL-COTS vehicle and airborne applications

Main features and benefits

  • Filtering for compliance to MIL-STD-461G
  • Spike suppression per MIL-STD-1275D and RTCA/DO-160G
  • High differential and common mode noise attenuation
  • -55 to 115°C temperature range (M-Grade)
  • Standard (S-Grade) or enhanced screening (M-Grade) options
  • Quarter brick size

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 features passive components such as ceramic, aluminium electrolytic and film capacitors, and magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer 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 2019, TDK posted total sales of USD 12.5 billion and employed about 105,000 people worldwide.

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


Tom Tillman

TDK-Lambda Americas


Contact This Company Download Spec Sheet

All Topics