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Ideal for 916.5 MHz Remote Control and Data Telemetry Transmitters
Very Low Series Resistance
Quartz Stability
Complies with Directive 2002/95/EC (RoHS)
Tape and Reel Standard per ANSI/EIA-481
Moisture Sensitivity Level: 1
AEC-Q200 Qualified
RO3144D-1
RoHS
Compliant
916.5 MHz
SAW
Resonator
The RO3144D-1 is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic
case. It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 916.5
MHz. This SAW resonator is designed specifically for use in remote control and data telemetry transmitters
operating in the USA under FCC Part 15 regulations and in Canada under DoC RSS-210.
Absolute Maximum Ratings
Rating
Value
Units
10
dBm
12
VDC
Input Power Level
DC Voltage
Storage Temperature
-40 to +85
°C
260
°C
Soldering Temperature (10 seconds / 5 cycles maximum)
SM3838-6 Case
3.8 X 3.8
Electrical Characteristics
Characteristic
Sym
Frequency, +25 °C
Notes
Minimum
Typical
Maximum
fC
MHz
Tolerance from 916.5 MHz
±150
fC
Insertion Loss
Quality Factor
Temperature Stability
Frequency Aging
kHz
IL
1.20
Unloaded Q
QU
6800
50Loaded Q
QL
Turnover Temperature
TO
Turnover Frequency
fO
fc
MHz
Frequency Temperature Coefficient
FTC
0.032
Absolute Value during the First Year
|fA|
10
ppm/°C2
ppm
Motional Resistance
2.5
dB
700
10
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
Units
916.650
916.350
25
1.0
40
°C
M
RM
11.8
µH
Motional Inductance
LM
14
Motional Capacitance
CM
2.1
fF
Transducer Static Capacitance
CO
2.1
pF
14.3
nH
LTEST
Test Fixture Shunt Inductance
767, YWWS
500 Pieces / Reel
Lid Symbolization
Standard Reel Quantity
Reel Size 7 Inch
3000 Pieces / Reel
Reel Size 13 Inch
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1. The design, manufacturing process, and specifications of this device are subject to change.
2. US or International patents may apply.
3. RoHS compliant from the first date of manufacture.
©2010-2014 by RFM Integrated Device, Inc.
RO3144D-1 (R) 12/07/2021
Page 1 of 3
www.rfmi.co
Electrical Connections
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
NC
6
Terminal
7
NC
8
NC
6
1
From 50
Network Analyzer
G
C
Parameter Test Circuit
Connection
1
5
2
4
3
To 50
Network Analyzer
Power Test Circuit
H
6
1
6
767
YWWS
A 2
5
E
1
5
2
4
3
50 Source
at F C
I
P INCIDENT
Low-Loss
Matching
Network to
50
P REFLECTED
1
6
2
3
5
4
4
3
D
J
Example Application Circuits
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
+VDC
C1
+VDC
L1
Case Dimensions
A
B
C
D
E
G
H
I
J
mm
Nom
3.80
3.80
1.30
1.10
2.54
1.00
2.00
0.60
1.80
Min
3.60
3.60
1.10
0.95
2.39
0.90
1.90
0.50
1.70
Max
4.00
4.00
1.50
1.25
2.69
1.10
2.10
0.70
1.90
Min
0.142
0.142
0.043
0.037
0.094
0.035
0.748
0.020
0.067
Inches
Nom
0.150
0.150
0.050
0.043
0.100
0.040
0.079
0.024
0.071
6
Max
0.157
0.157
0.060
0.049
0.106
0.043
0.083
0.028
0.075
Lm
4
RF Bypass
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
Co = Cp + 0.05 pF
fC = f O , T C = T O
0
0
-50
-50
-100
-100
-150
-150
-200
-80 -60 -40 -20
*Case Parasitics
-200
0 +20 +40 +60 +80
T = TC - T O ( °C )
Cm
©2010-2014 by RFM Integrated Device, Inc.
RO3144D-1 (R) 12/07/2021
5
Temperature Characteristics
0.05 pF*
Rm
3
C2
Equivalent RLC Model
Cp
2
ROXXXXC
Bottom View
(f-fo ) / fo (ppm)
Dimension
1
Page 2 of 3
www.rfmi.co
Recommended Reflow Profile
1. Preheating shall be fixed at 150~180ºC for 60~90 seconds.
2. Ascending time to preheating temperature 150ºC shall be 30 seconds min.
3. Heating shall be fixed at 220ºC for 50~80 seconds and at 260ºC +0/-5ºC peak (10 seconds).
4. Time: 5 times maximum.
©2010-2014 by RFM Integrated Device, Inc.
RO3144D-1 (R) 12/07/2021
Page 3 of 3
www.rfmi.co
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