RFM products are now Murata products.

RFM products are now Murata products.
RFM products are now
Murata products.
RO3075E
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Ideal for 345 MHz Remote Control and Security Transmitters
Very Low Series Resistance
Quartz Stability
Pb
Complies with Directive 2002/95/EC (RoHS)
345.0 MHz
SAW
Resonator
The RO3075E is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.
It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters
operating at 345 MHz. The RO3075E is designed for wireless remote control and security transmitters
operating in the USA under FCC Part 15.
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
0
dBm
DC Voltage
12
VDC
Storage Temperature Range
-40 to +125
°C
SM3030-6 Case
Operating Temperature Range
-40 to +105
°C
3.0 X 3.0
260
°C
Soldering Temperature (10 seconds / 5 cycles maximum)
Electrical Characteristics
Characteristic
Frequency, +25 °C
Sym
fC
Absolute Frequency
Tolerance from 345.000 MHz
Quality Factor
Temperature Stability
IL
50 Loaded Q
QL
Turnover Temperature
TO
1.4
Units
345.100
MHz
±100
kHz
2.2
dB
35
°C
4200
10
fO
Absolute Value during the First Year
|fA|
25
fC
6, 7, 8
FTC
ppm/°C2
ppm/yr
0.032
1, 6
5
Motional Resistance
RM
Motional Inductance
LM
Motional Capacitance
CM
Shunt Static Capacitance
CO
5, 6, 9
LTEST
2, 7
10
1.0
5, 7, 9
Lid Symbolization
Standard Reel Quantity
Maximum
27000
Frequency Temperature Coefficient
Test Fixture Shunt Inductance
Typical
344.900
2, 5, 6
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
Minimum
QU
Unloaded Q
Turnover Frequency
Frequency Aging
2, 3, 4, 5
fC
Insertion Loss
Notes
M
18

240
µH
0.9
fF
4.3
pF
50
nH
694 // YWWS
Reel Size 7 Inch
10
Reel Size 13 Inch
500 Pieces / Reel
3000 Pieces / Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
2.
3.
4.
5.
6.
Frequency aging is the change in fC with time and is specified at +65 °C or
less. Aging may exceed the specification for prolonged temperatures
above +65 °C. Typically, aging is greatest the first year after manufacture,
decreasing in subsequent years.
The center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the resonator in the 50  test system (VSWR  1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment
manufacturer.
Unless noted otherwise, case temperature TC = +25 ± 2 °C.
The design, manufacturing process, and specifications of this device are
©2010-2014 by Murata Electronics N.A., Inc.
RO3075E (R) 3/28/14
7.
8.
9.
10.
Page 1 of 2
subject to change without notice.
Derived mathematically from one or more of the following directly
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
Turnover temperature, TO, is the temperature of maximum (or turnover)
frequency, fO. The nominal frequency at any case temperature, TC, may be
calculated from: f = fO [1 - FTC (TO -TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance CO
is the static (nonmotional) capacitance between the two terminals
measured at low frequency (10 MHz) with a capacitance meter. The
measurement includes parasitic capacitance with "NC” pads unconnected.
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: CP  CO - 0.05 pF.
Tape and Reel Standard Per ANSI / EIA 481.
www.murata.com
Pin
The SAW resonator is bidirectional and
may be installed with either orientation.
The two terminals are interchangeable
and unnumbered. The callout NC
indicates no internal connection. The NC
pads assist with mechanical positioning
and stability. External grounding of the NC
pads is recommended to help reduce
parasitic capacitance in the circuit.
B
NC
2
Terminal
3
NC
4
NC
5
Terminal
6
NC
6
A 2
5
3
4
E
F
The curve shown accounts for resonator contribution only and does not
include external LC component temperature effects.
fC = f O , T C = T O
0
G
C
1
Temperature Characteristics
Connection
1
0
-50
-50
-100
-100
-150
-150
(f-fo ) / fo (ppm)
Electrical Connections
-200
0 +20 +40 +60 +80
-200
-80 -60 -40 -20
H
6
1
5
2
4
3
T = TC - T O ( °C )
I
Characterization Test Circuit
Inductor LTEST is tuned to resonate with the static capacitance, CO, at FC.
D
J
6
1
From 50 
Network Analyzer
5
2
4
3
To 50 
Network Analyzer
K
L
N
K
N
Power Dissipation Test
O
N
M
M
50  Source
at F C
Case and Typical PCB Land Dimensions
Ref
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
Min
2.87
2.87
1.12
0.77
2.67
1.47
0.72
1.37
0.47
1.17
mm
Nom
3.00
3.00
1.25
0.90
2.80
1.60
0.85
1.50
0.60
1.30
3.20
1.70
1.05
0.81
0.38
Max
3.13
3.13
1.38
1.03
2.93
1.73
0.98
1.63
0.73
1.43
Min
0.113
0.113
0.044
0.030
0.105
0.058
0.028
0.054
0.019
0.046
P INCIDENT
P REFLECTED
Inches
Nom
0.118
0.118
0.049
0.035
0.110
0.063
0.033
0.059
0.024
0.051
0.126
0.067
0.041
0.032
0.015
Max
0.123
0.123
0.054
0.040
0.115
0.068
0.038
0.064
0.029
0.056
Low-Loss
Matching
Network to
50 
1
6
5
4
Typical Low-Power Transmitter Application
Modulation
Input
200k 
+9VDC
C1
47
L1
(Antenna)
1
6
2
3
5
4
C2
ROXXXXC
Bottom View
RF Bypass
470
Typical Local Oscillator Application
Output
200k 
C1
+VDC
L1
Equivalent RLC Model
0.05 pF*
Cp
Lm
3
Example Application Circuits
+VDC
Rm
2
1
Co = Cp + 0.05 pF
6
2
3
5
4
C2
*Case Parasitics
ROXXXXC
Bottom View
RF Bypass
Cm
©2010-2014 by Murata Electronics N.A., Inc.
RO3075E (R) 3/28/14
Page 2 of 2
www.murata.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Murata:
RO3075E
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