B39321R0981U410 datasheet(3/5 Pages) EPCOS

Part #	B39321R0981U410

Description	SAW Components

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Manufacturer	EPCOS [EPCOS]

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March 23, 2009

R 981

315.00 MHz

SAW Components

SAW resonator

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics

Reference temperature:

TA = 25 ˚C

Terminating source impedance:

ZS = 50 Ω

Terminating load impedance:

ZL = 50 Ω

min.

typ.

max.

Center frequency1)

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

fC

314.90

315.00

315.10

MHz

Minimum insertion attenuation

α

min

—

1.4

1.8

dB

Unloaded quality factor

QU

7600

11000

—

Ageing of fC

—

–50/+50

ppm

Equivalent circuit elements

Motional capacitance

C1

—

2.334

—

fF

Motional inductance

L1

—

109.4

—

µH

Motional resistance

R1

—19

27

Ω

Parallel capacitance2)

2) If used in two port configuration (pin 1 - input, pin 3 - output) C

0 is reduced by approx. 0.3 pF.

C0

—

3.3

—

pF

Temperature coefficient of frequency3)

3) Temperature dependence of f

C: fC(TA) = fC(T0) (1 + TCf (TA – T0)

2)

TCf

—

–0.032

—

ppm/K2

Turnover temperature

T0

20—50

˚C

Maximum ratings

Operable temperature range T

–40/+125 ˚C

Storage temperature range

Tstg

–40/+125 ˚C

DC voltage

VDC

12

V

Source power

PS

0

dBm

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