Signal Filters

A Signal Filter is a passive component, which allows specific frequency bands to pass and reject other electrical signals, mainly for noise reduction. The design integrates multilayer ceramic capacitors, inductors, dielectric resonators and crystals.
The Filter finds use in circuits of audio, video, broadband and communication equipment. Electronic signal processing filter is described to be linear or non-linear, analogue or digital, shift invariance, passive or active circuit.

The filter frequency response can be classified as:

  • high-pass
  • low-pass
  • band-pass
  • band-stop
  • notch
  • all-pass filter
  • cut-off frequency.

The order of a filter refers to the slope of the transition to roll-off around the cut-off frequency. A first-order filter responds at -6 dB per octave, a second-order filter decreases at -12 dB, a third-order at -18 dB, on a logarithmic scale. The analogue filter in a linear design of a network synthesis type is known as the Butterworth filter, Chebyshev filter, Elliptic filter, Bessel filter and Gaussian filter.

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Filters

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Description Price Series Maximum Current Rating Maximum Voltage Rating Mounting Type Operating Frequency Termination Style Package/Case Dimensions Depth Height Length Maximum Operating Temperature Minimum Operating Temperature Capacitance
RS Stock No. 464-265
Mfr. Part No.NUF6401MNT1G
HK$1.605
Each (In a Pack of 10)
units
- - - Surface Mount - - - 3 x 1.35 x 1mm - 1mm 3mm +85 °C -40 °C -
RS Stock No. 102-3484
Mfr. Part No.NUF6401MNT1G
HK$1.12
Each (On a Reel of 3000)
units
NUF6401MN - - Surface Mount 3000MHz Solder Pad - 3 x 1.35 x 1mm 1.35mm 1mm 3mm +85°C -40°C -
RS Stock No. 463-773
Mfr. Part No.NUF4401MNT1G
HK$2.962
Each (In a Pack of 10)
units
NUF4401MN - - Surface Mount 2400MHz Solder Pad - 2 x 2 x 1mm 2mm 1mm 2mm +85°C -40°C -
RS Stock No. 163-2699
Mfr. Part No.NUF4401MNT1G
HK$1.49
Each (On a Reel of 3000)
units
NUF4401MN - - Surface Mount 2400MHz Solder Pad - 2 x 2 x 1mm 2mm 1mm 2mm +85°C -40°C -