BAND PASS DIELECTRIC FILTERS

Band Pass Dielectric Filters (3 or More Poles)

DF (3 or More Poles)

Tokenchina surface mount PCB configured 3 or more poles band pass filter, duplexor or notch filter is designed to comply with “Green” manufacturing initiatives eliminating heavy metal elements.


This configuration is designed to comply with pending European regulations regarding the elimination of lead in electronic assemblies. Custom assemblies can be obtained with flat pack SMT style, through-hole or Sn/Pb coated PCB surface mount designs.


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


Features

  • Custom Designs
  • Rugged, High Q Ceramic
  • Excellent mechanical stability
  • SMD and reflow soldering is available
  • Low insertion loss dielectric resonators
  • Mountable by automatic placing machine
  • Temperature stability for temperature compensated dielectric constant

Applications

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

DF Dimensions (mm): 3 or More Poles Dielectric Filter DF

DF Specifications - Dielectric Filter DF

Part No. Center
Frequency
(MHz)
BandWidth
(MHz)
Insertion
Loss
(dB)max.
Ripple in
BandWidth
(dB)max.
V.S.W.R
max.
Attenuation
(dB)min.(MHz)
DF43R860S20A 860 fo±10 3.0 0.8 2.0 -25 at fo+30;   -22 at fo-30
DF43R1855S10A 1855 fo±5 3.5 1.0 2.0 -30 at fo+100;   -28 at fo-100
DF43R950S20A 950 fo±10 3.5 0.8 2.0 -40 at fo+30;   -35 at fo-30
DF44R3120S60A 3120 fo±30 3.0 1.0 1.5 -58 at fo+355;   -55 at fo-375
DF45R1120S40A 1120 fo±20 2.5 1.0 2.0 -50 at fo+50;   -50 at fo-50
DF33R815S20B 815 fo±10 2.5 0.8 2.0 -18 at fo+40;   -25 at fo-40
DF33R1880S50B 1880 fo±25 3.5 1.0 2.0 -40 at fo+150;   -40 at fo-150
DF23R1480S40C 1480 fo±20 2.5 1.0 2.0 -20 at fo+150;   -20 at fo-150
DF23R1960S60C 1960 fo±30 2.0 1.0 2.0 -20 at fo+200;   -20 at fo-200
DF23R2480S30C 2480 fo±15 2.5 1.0 2.0 -20 at fo+250;   -20 at fo-250
DF23R5800S200D 5800 fo±100 2.0 1.0 2.0 -5 at fo+400;   -15 at fo-400

Typical Charateristic - Dielectric Filter DF

How to Order - 3 or More Poles Band Pass Dielectric Filter DF

DF 3 3R 815 S 20 B
Dielectric Filter
Thickness
4 3.8mm
3 3.0mm
2 2.0mm
Number of
Resonator
Center Frequency
(MHz)
Connect Type
S SMD type
BandWidth
(MHz)
Size
(W×H)(mm)
A 11.8 × 3.8
B 8.6 × 3.0
C 5.8 × 2.0

PDF download

DF Series - Band Pass Dielectric Filters (3 or More Poles)

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