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SAW Components
Data Sheet R 821
SAW Components Resonator Data Sheet
R 821 315,00 MHz
Ceramic package QCC4A
Features
s 1-port resonator s Provides reliable, fundamental mode, quartz fre1,2
1
quency stabilization i.e. in transmitters or local oscillators s Protection layer: Elpas s AEC-Q200 qualified component family Terminals
s Ni, gold plated
0,8 4
3
0,5
3,5
1,45
5,0
Dimensions in mm, approx. weight 0,1 g
Pin configuration
C1
1 3 2,4
Input Output, grounded in 1-port conf. Ground (case)
R1
L1
C0
1
3
Type R 821
Ordering code B39321-R 821-H210
Marking and Package according to C61157-A7-A86
Packing according to F61074-V8175-Z000
Electrostatic Sensitive Device (ESD)
Maximum ratings Operable temperature range Storage temperature range DC voltage Source power
TA Tstg VDC Ps
-40/+125 -40/+125 12 0
C C V dBm
between any terminals
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Oct 11, 2004
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SAW Components Resonator Data Sheet
Characteristics Reference temperature: Terminating source impedance: Terminating load impedance:
R 821 315,00 MHz
TA = 25 C ZS = 50 ZL = 50
min. Center frequency 1)
typ. 315,00 1,5 13000 -- 2,136 119,5 18 2,8 -0,032 --
max. 315,075 MHz 1,9 -- -50/+50 ppm -- -- 25 -- -- 50 fF H pF ppm/K2 C dB
fc
min
314,925 -- 9400 --
Minimum insertion attenuation Unloaded quality factor Ageing of fc Equivalent circuit elements Motional capacitance Motional inductance Motional resistance Parallel capacitance 2) Temperature coefficient of frequency 3) Turnover temperature
1) Center 2) If
QU
C1 L1 R1 C0 TCf T0
-- -- -- -- -- 20
frequency is defined as maximum of the real part of the admittance dependence of fc:
used in two port configuration (pin 1-input, pin 3-output) C0 is reduced by approx. 0,3 pF.
3)Temperature
fc(TA) = fc(T0)(1 + TCf(TA - T0)2)
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Oct 11, 2004
SAW Components Resonator Data Sheet
R 821 315,00 MHz
Published by EPCOS AG Surface Acoustic Wave Components Division, SAW CE AE PD P.O. Box 80 17 09, D-81617 Munchen (c) EPCOS AG 2004. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS' prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices.
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Oct 11, 2004

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