The TDK-Lambda FQA series of EMC filters has a rating of ±40 Vdc at 20 A. 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 60.6x39x12.7 mm (L x W x H) and the flanged version 60.6×55.9×12.7 mm. The total dc resistance of the filter is typically 12 mΩ, minimizing power losses.
The filters are available with standard production screening (-S suffix) and a baseplate temperature rating of -40 to +115°C, or with enhanced screening (-M suffix) and an extended temperature rating of -55 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: https://www.us.tdk-lambda.com/lp/products/fq-series.htm, 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 https://www.us.tdk-lambda.com/lp/.
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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
