B39321-R901-H110 datasheet(3/4 Pages) EPCOS

3 / 4 page

Dec 05, 2005

SAW Components

R901

315,00 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 1-input, pin 3-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 frequency 1)

314,925

315,000

315,075 MHz

Minimum insertion attenuation

min

—

1,5

1,9

Unloaded quality factor

7600

11000

—

Ageing of

—

–50/+50 ppm

Equivalent circuit elements

Motional capacitance

—

2,268

—

Motional inductance

—

112,5

—

µH

Motional resistance

—20

Ω

Parallel capacitance 2)

—

3,30

—

Temperature coefficient of frequency 3)

TCf

—

–0,032

—

ppm/K2

Turnover temperature

15—35

˚C

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