B39431-R727-U310 datasheet(3/4 Pages) EPCOS

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May 09, 2001

SAW Components

R 727

433,92 MHz

Resonator

Data Sheet

Characteristics

Reference temperature:

TA = 25 ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating Load impedance:

ZL = 50 Ω

1) Center frequency is defined as maximum of the real part of the admittance

2) If used in two port configuration (pin 2-input, pin 6-output) C0 is reduced by approx. 0,3 pF.

3)Temperature dependence of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2)

min.

typ.

max.

Center frequency1)

433,845

433,92

433,995

MHz

Minimum insertion attenuation

min

—

1,0

1,7

Unloaded quality factor

8000

14500

—

Ageing of

——

± 50

ppm

Equivalent circuit elements

Motional capacitance

—

1,95

—

Motional inductance

—69

—

µH

Motional resistance

—12

Ω

Parallel capacitance 2)

—

2,7

—

Temperature coefficient of frequency 3)

TCf

—

– 0,03

—

ppm/K2

Turnover temperature

0—

˚C

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