EMI Suppression Filters (EMC and Noise Suppression) Internal interference noise suppression solutions for smartphones: EMI suppression filters

This article introduces BLF series frequency specified filters and NFP series common mode noise filters.

Some of the products introduced in this article (NFP series) have been discontinued.

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Use of EMI suppression filters prevents a drop in reception sensitivity

Noise reduction effects can be expected by using EMI suppression filters.

Applicable series

  • Noise filters specialized for noise suppression performance in the 700 MHz and 2.4 GHz carrier frequency bands

Frequency specified filters
BLF series

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Chip size Part number Target frequency Impedance
@ target frequency 
0402mm
01005inch
BLF02JD361GNE 700MHz 360Ω
BLF02JD471GNE 470Ω
BLF02RD331GNE 2.4GHz 330Ω
BLF02RD471GNE 470Ω
0603mm
0201inch
BLF03JD421GNE 700MHz 420Ω
  • Effective suppression of common mode noise without impacting differential signals
  • Ideal for high-speed differential transmission lines such as MIPI and USB interfaces

Common mode filter
NFP series

The NFP series has been discontinued.

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Chip size Part number Target frequency 
0605mm
025020inch
NFP0QHB242HS2 8.5GHz (Typ.)
NFP0QHB372HS2 10GHz (Typ.)
NFP0QHB542HS2 10GHz (Typ.)