NFA31GD1006R84D

Overview

The NFA31GD1006R84D is a surface-mount EMI suppression filter array manufactured by Murata Electronics. It features four channels in a 1206 (3216 metric) package. Each channel integrates a resistor and capacitor configured as a first-order low-pass RC filter. The component specifies a capacitance of 10pF with ±20% tolerance and a resistance of 6.8 Ohms with ±40% tolerance. It has a rated voltage of 6V DC and supports a maximum current of 50 mA. The device operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates four independent RC filter channels for multi-line signal conditioning
• Provides first-order low-pass filtering characteristics for EMI/RFI suppression
• Utilizes a compact 1206 surface-mount footprint for space-constrained designs

Applications

• High-speed data line protection
• USB interface filtering
• HDMI signal integrity enhancement
• General purpose EMI suppression in portable electronics

Procurement Notes

Verify the specific suffix 'D' against official Murata documentation to confirm tape and reel packaging specifications. Confirm that the 6V rating aligns with your circuit's operating conditions, as higher voltages may exceed limits. Ensure compatibility with standard reflow soldering profiles for 1206 components. Check for any recent product change notices or lifecycle status updates directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when multiple differential or single-ended lines require simultaneous low-pass filtering in a minimal area. The integrated RC topology simplifies design compared to discrete components. Verify that the 6.8 Ohm series resistance does not cause unacceptable signal attenuation for your specific application bandwidth requirements. Ensure the 50 mA current limit exceeds the peak operational current of the protected lines.

Part Context

This part belongs to the Murata NFA31 series of SMD block-type EMI suppression filters. These devices are designed to replace multiple discrete resistors and capacitors on PCBs. The series offers various resistance and capacitance combinations tailored for different signal speeds and impedance matching needs. The NFA31GD variant specifically targets applications requiring low capacitance values for high-frequency signal preservation.

Replacement Considerations

Direct substitutes include other Murata NFA31 series parts with similar RC values, such as NFA31GD1001014D, though resistance and capacitance values differ. Cross-brand replacements require matching the 1206 footprint, 4-channel configuration, and electrical parameters (10pF, 6.8 Ohm). Verify pinout compatibility and thermal performance before substitution.