Dielectric Filters

(DF 3 or Multi-Pole)

Within "DF Series" section :: 1. Dielectric Filters DF-A Type; 2. Dielectric Filters DF-B Type; 3. Dielectric Filters DF-C/D Type; 4. Dielectric Filters DF-3 or More Poles; 5. Dielectric Filters BP-R Type; 6. Dielectric Filters LJ Type; 7. Dielectric Filters BP-S Type

Dielectric Filters (DF) 3 or multi-pole range up to 5.8GHz Preview

Dielectric Filters - Multi-Pole (DF) Series

The dielectric filter technology based on high Dielectric Constant (K) ceramic material has been contributing great size reduction of a mobile telecommunication equipment, especially cellular handset and base station. That is superior in electrical performances and reliability. Furthermore it has good mass productivity and low cost.

Token (DF) dielectric filters' highly sophisticated multi-pole design ensures high attenuation and good selectivity. The (DF) multi-pole series filter's small size (8.6 x 9.0 x 3.0 mm) means they require more less mounting space with a ripple of 1.0 dB max. Insertion loss is from 2.0 ~ 3.5 (dB) max. Center frequency range from 860 MHz to 5800 MHz with V.S.W.R 2.0 max.

Coaxial dielectric filter is the most popular and commercially successful technology. Token takes this advance technology to manufacture coaxial type duplexer. This features high unloaded Q, excellent high power performance, flexible design capability, size reduction, low profile, and lighter weight.

Surface mount multi-pole (DF) serise RF filter package is suitable for automatic pick and place equipment which assures mechanical stability and excellent lead coplanarity. Custom designs and tighter tolerances are available on request. Products conform to the RoHS directive.

Token will also produce devices outside these specifications to meet specific customer requirements, please contact our sales for more information.

Features :

MBP 42R Series.
Murata DFC Series Compatible.
Application for CT1, CT2, 900MH, 1.8GHz, 2.4G WLL Cordless phone.

Multi-Pole (DF) Dimensions (Unit: mm)

Dielectric Filter Multi-Pole (DF) Series Dimensions

Multi-Pole (DF) Series
Dielectric Filter Dimensions

Multi-Pole (DF) Typical Specifications

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

Multi-Pole (DF) Typical Characteristic

Dielectric Filters (DF) 3 or More Poles Type Typical Characteristic I

Filter Multi-Pole (DF) Type I
Center 860.000MHz (-3.280dB) & (-11.086dB) Span 200.000MHz Typical Characteristic

Dielectric Filters (DF) 3 or More Poles Type Typical Characteristic II

Filter Multi-Pole (DF) Type II
Center 860.000MHz (-3.281dB) & (1.719dB) Span 200.000MHz) Typical Characteristic