DIELECTRIC FILTERS

Band Pass Dielectric Filters

DF-A

Tokenchina's Band Pass Filters assembly methodology offers a wide array of designs, from 2 pole – 6 pole band-pass filters and diplexer, to advanced band stop (notch) designs and high-pass or low-pass filters.


Detailed specifications, both mechanical and electrical, are maintained for many popular designs on our website, or by contacting our sales representative.


Features

  • SMD and reflow soldering is available
  • Mountable by automatic placing machine
  • Excellent mechanical stability without vibratile structure
  • Small and light for using high dielectric constant ceramics
  • Low insertion loss for using high Q-value dielectric resonators
  • Excellent temperature stability for temperature compensated dielectric constant

Applications

  • CT1, CT2, 900MHz, 1.8GHz, 2.4GHz, 5.8GHz
  • Wireless Microphone, Earphone
  • Cordless Phone

Dimensions (mm) - DF-A

Specifications - Dielectric Filters DF-A

Part No. Center
Frequency
(MHz)
Band Width
(MHz)
Insertion
Loss
(dB)max.
Ripple in
Band Width
(dB)max.
V.S.W.R
max.
Attenuation
(dB)min.(MHz)
DF457S30A 457 fo±15 3.0 1.0 2.0 17 at fo+50;   30 at fo-50
DF522S10A 522 fo±5 3.0 0.5 1.6 23 at fo+40;   40 at fo-40
DF683S30A 683 fo±15 2.5 1.0 2.0 20 at fo+64;   30 at fo-64
DF740S30A 740 fo±15 2.0 0.5 1.8 14 at fo+64;   20 at fo-64
DF864S10A 864 fo±5 2.5 0.5 1.5 15 at fo+24;   17 at fo-24
DF915S25A 915 fo±12.5 2.0 1.0 2.0 20 at fo+100;   35 at fo-100
DF903S6A 903 fo±3 3.5 0.5 1.5 32 at fo+24
DF927S6A 927 fo±3 3.5 0.5 1.5 32 at fo-24
DF1890S80A 1890 fo±40 1.5 1.0 2.0 15 at fo+200;   35 at fo-200
DF2403S20A 2403 fo±10 3.0 0.5 1.5 35 at fo+75
DF2475S20A 2475 fo±10 3.0 0.5 1.5 35 at fo-75

Typical Characteristic - Dielectric Filters DF-A

 

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DF-A Series - Band Pass Dielectric Filters

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