DF Series (SMD type) with high permittivity, high dielectric constants, extremely temperature stability and high Q that enables the design of stable microwave oscillators and filters. High dielectric materials and associated products are also available for custom application requirements. Applications for CT1, CT2, 900MHz, 1.8GHz, 2.4GHz, 5.8GHz Cordless Phone, wireless earphone, wireless microphone.

DF - A Type Configuration & DF - A Type Dimensions (Unit: mm)
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DF Typical Specifications
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


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