DIELECTRIC FILTERS

Band Pass Dielectric Filters

DF-B

Tokenchina specializing in high performance ceramic band pass, notch and diplexing applications can cover a frequency range from 650 MHz to 910 MHz with surface mount or connectorized devices.


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


Features

  • Excellent mechanical stability
  • SMD and reflow soldering is available
  • Mountable by automatic placing machine
  • 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) - Band Pass DF-B

Specifications - Band Pass DF-B

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)
DF650S30B 650 fo±15 2.5 0.5 1.5 19 at fo±64
DF700S20B 700 fo±10 2.5 0.5 1.5 19 at fo±64
DF710S08B 710 fo±4 5.0 0.5 1.5 28 at fo+50;   35 at fo+100
DF746S20B 746 fo±10 2.5 0.5 1.5 12 at fo-20
DF758S16B 758 fo±8 2.5 0.5 1.5 19 at fo±64
DF794S20B 794 fo±10 2.5 0.5 1.5 19 at fo±64
DF800S08B 800 fo±4 5.0 0.5 1.5 28 at fo+50;   35 at fo+100
DF836S20B 836 fo±10 2.5 0.5 1.5 19 at fo+52
DF850S08B 850 fo±4 5.0 0.5 1.5 30 at fo+100;   40 at fo-200
DF863S22B 863 fo±11 2.0 0.5 1.5 20 at fo+90;   50 at fo-90
DF875S24B 875 fo±12 2.3 0.5 1.5 30 at fo-70
DF903S09B 903 fo±4.5 3.5 0.5 1.5 34 at fo-64;   41 at fo+64
DF906S20B 906 fo±10 2.5 0.5 1.5 19 at fo±64
DF916S30B 916 fo±15 2.7 0.5 1.5 20.5 at fo±70

Typical Characteristical - Band Pass DF-B

 

PDF download

DF-B Series - Band Pass Dielectric Filters

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