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SAW Resonator
HR315
The HR315 is a true one- port surface- acoustic- wave( SAW) resonator in a low- profile F-11 case. It
provides reliable fundamental- mode quartz frequency stabilization of fixed- frequency transmitters
operating at 315 MHz.
1.Package Dimension (F-11)
Pin Connection
1/4 Input / Output
2/3 Case Ground
2.Marking
Dimension
A
B
C
D
E
F
Data (unit: mm)
11.0±0.3
4.5±0.3
3.2±0.3
0.45±0.1
5.0±0.5
2.54±0.2
3.Equivalent LC Model and Test Circuit
HR315
Color: Black or Blue
4.Typical Application Circuit
1) Typical Low-Power Transmitter Application
2) Typical Local Oscillator Application
5.Typical Frequency Response
6.Temperature Characteristics
SHENZHEN ZHONGKEJING ELECTRONIC Co.,LTD
E-mail: zkjdz12345@163.com
TEL0755-29666862 FAX0755-29666869

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SAW Resonator
HR315
7.Performance
7-1.Maximum Rating
Rating
CW RF Power Dissipation
DC Voltage Between Any Two Pins
Case Temperature
7-2.Electronic Characteristics
Value
+10
±30V
-40 to +85
Units
dBm
VDC
Characteristic
Center Frequency Absolute Frequency
(+25)
Tolerance from 315 MHz
Insertion Loss
Quality Factor
Unloaded Q
50 Ω Loaded Q
Temperature
Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging Absolute Value during the First Year
DC Insulation Resistance Between Any Two Pins
Motional Resistance
RF Equivalent
RLC Model
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
Sym
fC
fC
IL
QU
QL
TO
fO
FTC
|fA|
RM
LM
CM
CO
Minimum
314.925
25
1.0
2.3
Typical
±75
1.5
11,900
1,900
40
fc
0.037
10
19
114.2958
2.2358
2.6
Maximum
315.075
±150
2.0
55
23
2.9
Units
MHz
kHz
dB
kHz
2
ppm/
ppm/yr
MΩ
µH
fF
pF
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling !
NOTES:
1. Frequency aging is the change in fC with time and is specified at +65or less. Aging may exceed the specification
for prolonged temperatures above +65. Typically, aging is greatest the first year after manufacture, decreasing in
subsequent years.
2. The center frequency, fC ,is the frequency of minimum IL with the resonator in the specified test fixture in a 50 Ω test
system with VSWR 1.2 : 1. Typically, foscillator or ftransmitter is less than the resonator fC.
3. Typically, equipment utilizing this device requires emissions testing and government approval, which is the
responsibility of the equipment manufacturer.
4. Unless noted otherwise , case temperature TC=+25℃±2.
5. The design, manufacturing process, and specifications of this device are subject to change without notice.
6 .Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC
versus TC , and CO.
7. Turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fO, The nominal center frequency
at any case temperature , TC, may be calculated from :f = fO1-FTC (TO-TC) 2.Typically, oscillator TO is 20less than
the specified resonator TO.
8. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for
reference only . The capacitance CO is the measured static (nonmotional) capacitance between either pin 1 and ground
or pin 2 and ground .The measurement includes case parasitic capacitance with a floating case. For usual grounded
case applications (with ground connected to either pin 1 or pin 2 and to the case), add approximately 0.25 pF to CO.
SHENZHEN ZHONGKEJING ELECTRONIC Co.,LTD
E-mail: zkjdz12345@163.com
TEL0755-29666862 FAX0755-29666869