SAW Components
SAW resonator
Short range devices
Series/type:
Ordering code:
R903
B39321R 903H110
Date:
Version:
July 08, 2013
2.1
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
SAW Components
R903
SAW resonator
315.50 MHz
Data sheet
Application
■ 1-port resonator
■ Provides reliable, fundamental mode, quartz fre-
quency stabilization i.e. in transmitters or local oscillators
Features
■
■
■
■
■
■
■
■
■
■
Package size 3.0 x 3.0 x 1.0 mm3
Package code DCC6E
RoHS compatible
Approximate weight 0.037 g
Package for Surface Mount Technology (SMT)
Ni, gold-plated terminals
Lead free soldering compatible with J - STD20C
Passivation layer Elpas
AEC-Q200 qualified component family
Electrostactic Sensitive Device (ESD)
Pin configuration
■ 2
■ 5
■ 1,3,4,6
Input
Output, grounded in 1-port conf.
Ground (case)
R1
L1
C1
C0
2
Please read cautions and warnings and
important notes at the end of this document.
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July 08, 2013
5
SAW Components
R903
SAW resonator
315.50 MHz
Data sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
TA = 25 ˚C
ZS = 50 Ω
ZL = 50 Ω
min.
315.425
typ.
315.50
max.
315.575
Center frequency1)
fC
Minimum insertion attenuation
Unloaded quality factor
αmin
—
1.5
1.9
QU
7600
10500
—
—
—
–50/+50
—
—
—
—
2.42
105.4
19
3.2
—
—
27
—
fF
µH
Ω
pF
—
–0.032
—
ppm/K2
10
—
30
˚C
Ageing of fC
Equivalent circuit elements
Motional capacitance
Motional inductance
Motional resistance
Parallel capacitance2)
C1
L1
R1
C0
Temperature coefficient of frequency3) TCf
T0
Turnover temperature
1)
2)
3)
Center frequency is defined as maximum of the real part of the admittance.
If used in two port configuration (pin 2 - input, pin5 - output) C0 is reduced by approx. 0.3 pF.
Temperature dependence of fC: fC(TA) = fC(T0) (1 + TCf (TA – T0)2)
Maximum ratings
Operable temperature range T
–45/+125 ˚C
Storage temperature range
DC voltage
Source power
–45/+125 ˚C
12
V
0
dBm
Tstg
VDC
PS
Please read cautions and warnings and
important notes at the end of this document.
3
July 08, 2013
MHz
dB
ppm
SAW Components
R903
SAW resonator
315.50 MHz
Data sheet
References
Type
R903
Ordering code
B39321R 903H110
Marking and package
C61157-A7-A143
Packaging
F61074-V8168-Z000
Date codes
L_1126
Soldering profile
S_6001
RoHS compatible
RoHS-compatible means that products are compatible with the
requirements according to Art. 4 (substance restrictions) of Directive 2011/65/EU of the European Parliament and of the
Council of June 8th, 2011, on the restriction of the use of certain
hazardous substances in electrical and electronic equipment
("Directive") with due regard to the application of exemptions as
per Annex III of the Directive in certain cases.
Coils
See Inductor pdf-catalog
http://www.tdk.co.jp/tefe02/coil.htm#aname1
and Data Library for circuit simulation
http://www.tdk.co.jp/etvcl/index.htm
For further information please contact your local EPCOS sales office or visit our webpage at
www.epcos.com .
Published by EPCOS AG
Systems, Acoustics, Waves Business Group
P.O. Box 80 17 09, 81617 Munich, GERMANY
EPCOS AG 2013. 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.
Please read cautions and warnings and
important notes at the end of this document.
4
July 08, 2013
Important notes
The following applies to all products named in this publication:
1.
2.
3.
4.
5.
6.
7.
Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately
incumbent on the customer to check and decide whether an EPCOS product with the
properties described in the product specification is suitable for use in a particular customer
application.
We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in
which the malfunction or failure of an electronic component could endanger human life or
health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by
means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained
by third parties in the event of malfunction or failure of an electronic component.
The warnings, cautions and product-specific notes must be observed.
In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our
Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more
detailed questions, please contact our sales offices.
We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be
available. The aforementioned does not apply in the case of individual agreements deviating
from the foregoing for customer-specific products.
Unless otherwise agreed in individual contracts, all orders are subject to the current
version of the “General Terms of Delivery for Products and Services in the Electrical
Industry” published by the German Electrical and Electronics Industry Association
(ZVEI).
The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CeraLink, CSMP, CSSP, CTVS,
DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL,
SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap
are trademarks registered or pending in Europe and in other countries. Further information
will be found on the Internet at www.epcos.com/trademarks.
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July 08, 2013