Dielectric Filters (DF-B)

Dielectric Filters (DF-B)

Direct Dielectric Filter (DF-B) has a Ripple in Band Width (dB) 0.5 max. Direct (DF-B) filter manufactures with a fine-grained, high density, high purity dielectric material to keep the best performance with a ripple in band width (dB) 0.5 max.

The (DF-B) filter's small size (8.5 x 6.0 x 3.0 mm) means they require more less mounting space. Available Center Frequency 650 MHz to 916 MHz with V.S.W.R 1.5 max., insertion loss 2.0 ~ 5.0 (dB) max.

RF dielectric filters are mounted in a surface mount package which assures mechanical stability and excellent lead coplanarity. RF filters can be customed designs and tighter tolerances available on request.

Products conform to the RoHS directive. Application of specific designs also available including different Dielectric values and Q specifications adjusted to frequency requirements.

Download complete PDF Dielectric Filters (DF-B).

Filters (DF-B) Dimensions (Unit: mm)
Dielectric Filters (DF) DF-B Type Dimensions
(DF-B) Dimensions
Typical Specifications (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 35 at fo+100;   28 at fo+50
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 35 at fo+100;   28 at fo+50
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 50 at fo-90;   20 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 Characteristic (DF-B)
Filters (DF-B) Type Typical Characteristic I
(DF-B) Type I Typical Characteristic
(Center 915.000MHz Span 400.000MHz)
Filters (DF-B) Type Typical Characteristic II
(DF-B) Type II Typical Characteristic
(Center 904.000MHz Span 300.000MHz)
Filters (DF-B) Type Typical Characteristic III
(DF-B) Type III Typical Characteristic
(Center 927.000MHz Span 200.000MHz)
Order Codes (DF-B)
DF 836 S 20 B
Part Number
Center Frequency
Connect Type
S SMD type
BandWidth
Size
A 7.3 × 3.6 mm
B 6.0 × 3.0 mm
C 4.5 × 2.0 mm
D 3.6 × 1.8 mm