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Product Detailed Parameters
- Description：FILTER LC(PI) 400MHZ SMD
- Series：EMIFIL®, NFW31
- Mfr：Murata Electronics
- Package：Tape & Reel (TR)
- Type：Low Pass
- Filter Order：3rd
- Technology：LC (Pi)
- Number of Channels：1
- Center / Cutoff Frequency：400MHz (Cutoff)
- Attenuation Value：10dB @ 1GHz
- Resistance - Channel (Ohms)：-
- Values：-
- ESD Protection：No
- Operating Temperature：-40°C ~ 85°C
- Applications：General Purpose
- Voltage - Rated：25V
- Mounting Type：Surface Mount
- Package / Case：1206 (3216 Metric), 3 PC Pad
- Size / Dimension：0.126" L x 0.063" W (3.20mm x 1.60mm)
- Height：0.079" (2.00mm)
- Current：200 mA
- Grade：-
- Qualification：-
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Overview
The NFW31SP407X1E4L is a third-order low-pass LC (Pi) EMI filter from Murata Electronics, designed for surface-mount applications. It features a cutoff frequency of 400 MHz and supports a maximum current of 200 mA. The component operates within a voltage rating of 25 V and utilizes a 1206 (3216 Metric) package with a three-pad configuration. This device provides effective noise suppression in compact electronic designs requiring high-frequency interference mitigation.
Feature Summary
- Third-order low-pass LC Pi filter topology for enhanced attenuation
- Surface-mount design compatible with automated assembly processes
- Integrated three-pad ground structure for improved RF performance
Applications
- High-speed digital signal line filtering
- Power supply noise suppression in portable devices
- EMI reduction in communication modules
Procurement Notes
Verify the specific suffix X1E4L against official Murata documentation to confirm exact tolerance and tape/reel specifications. Ensure compatibility with standard 1206 footprint dimensions during PCB layout. Cross-reference datasheet electrical characteristics with system requirements before finalizing procurement orders.
Selection Notes
Select this component when a third-order attenuation profile is required within a 1206 SMD package. Evaluate the 200 mA current handling capability against peak load conditions. Confirm that the 400 MHz cutoff frequency aligns with the target noise spectrum without attenuating desired signal bands.
Part Context
This part belongs to the Murata EMIFIL NFW31 series, which specializes in compact EMI filters for consumer electronics. The series offers various cutoff frequencies tailored for different noise environments while maintaining small form factors suitable for space-constrained mobile and computing applications.
Replacement Considerations
Check Murata's official substitution list for equivalent parts with matching cutoff frequencies and current ratings. Verify pinout compatibility and thermal characteristics before replacing.
