The specification shall cover the characteristics of four leads SMD ceramic filter with 455KHz in middle-frequency circuit of communication equipment.

1. ELECTRONICAL SPECIFICATIONS

A. CENTRE FREQUENCY(f.) : 455KHz±1.0KHz.Max.

B. BAND WIDTH AT 3dB : ±6.5KHzMin(TO 455KHz)

C. BAND WIDTH AT 50dB : ±15KHzMin(TO 455KHz)

D. STOP BAND ATTENUATION : 55dBMin(AT f0 ± 18 to ± 33KHz)

E. STOP BAND ATTENUATION : 50dBMin.(AT f.±100KHz)

F: STOP BAND ATTENUATION : 20dBMin(AT f0 ±0.1 to ±1 MHz)

G: RIPPLE : 3.0dBMax.(AT f.±6.5KHz)

H: INSERTION LOSS : 5.0dBMax.(AT THE SMALLEST LOSS)

I: TEMPRATURE COEFFICIENT

OF CENTER FRENQUENCY : ±50 PPM/℃ MAX.(-20 TO +80 ℃)

J: INPUT/OUPUT IMPEDANCE : 1.5KΩ

NOTE : A) CENTER FREQUENCY SHALL BE DEFIED AS THE CENTRAL

VALUE OF THE BAND WITH AT 6dB

B) TEMPRATURE COEFFICIENT OF CENTER FREQUENCY SHALL

BE DEFINED AS THE AVERAGE OF THE CENTRAL FREQUECY .

The company’s main products are frequency components (piezoelectric ceramics, crystals, surface acoustic waves), functional ceramic products

The company was established in 2008, develops and produces frequency components.

Our products are manufactured in accordance with the ISO9002 standard. We are striving to offer you best the quality products, preferential price and first-class services. Moreover, we accept both large and small orders, and can also design and develop products according to customers' special requirements.

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