RFM products are now
• Ideal for European Superheterodyne Receivers at 433.92 MHz
• Extremely Low Series Resistance
• Quartz Stability
• Rugged, Hermetic, Low-Profile TO39 Case
• Complies with Directive 2002/95/EC (RoHS)
The RO3102 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It
provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency oscillators operating at
approximately 423.22 MHz. The RO3102 is designed for 433.92 MHz superheterodyne receivers with a
10.7 MHz IF used in remote control and wireless security systems operating under ETSI I-ETS 300 220.
Absolute Maximum Ratings
CW RF Power Dissipation
DC Voltage Between Any Two Pins
-40 to +85
Solder Temperature, 10 seconds/5 cycles maximum
Center Frequency (+25 °C)
Tolerance from 423.220 MHz
50 Loaded Q
Frequency Temperature Coefficient
Absolute Value during the First Year
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC Model Motional Resistance
Pin 1 to Pin 2 Static Capacitance
Transducer Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization (in Addition to Lot and/or Date Codes)
2, 3, 4, 5
2, 5, 6
5, 6, 7
6, 7, 8
5, 7, 9
5, 6, 9
5, 6, 7, 9
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
1. Frequency aging is the change in fC with time and is specified at +65°C or
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
less. Aging may exceed the specification for prolonged temperatures
above +65°C. Typically, aging is greatest the first year after manufacture,
decreasing significantly 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 less than the resonator fC.
One or more of the following United States patents apply: 4,454,488 and
4,616,197 and others pending.
Typically, equipment designs utilizing this device require emissions testing
and government approval, which is the responsibility of the equipment
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 20°C
less than 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 pin1 and pin 2 measured
at low frequency (10 MHz) with a capacitance meter. 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.
5. Unless noted otherwise, case temperature TC = +25°C±2°C.
6. The design, manufacturing process, and specifications of this device are
subject to change without notice.
7. Derived mathematically from one or more of the following directly
©2010-2014 by Murata Electronics N.A., Inc.
RO3102 (R) 4/7/14
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