CW RF Power Dissipation
DC Voltage Between Any Two Pins
-40 to +85
Center Frequency Absolute Frequency
Tolerance from 315 MHz
50 Ω Loaded Q
Frequency Temperature Coefficient
Frequency Aging Absolute Value during the First Year
DC Insulation Resistance Between Any Two Pins
Pin 1 to Pin 2 Static Capacitance
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling !
1. Frequency aging is the change in fC with time and is specified at +65℃or less. Aging may exceed the specification
for prolonged temperatures above +65℃. Typically, aging is greatest the first year after manufacture, decreasing in
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 = fO［1-FTC (TO-TC) 2］.Typically, oscillator TO is 20℃ less 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