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| 型号： | RO3118A |
| 厂商： | RFM |
| 文件页数： | 1/2页 |
| 文件大小： | 0K |
| 描述： | SAW RESONATOR 318.0MHZ SM5035-4 |
| 标准包装： | 500 |
| 系列： | RO |
| 频率： | 318MHz |
| 类型： | SAW |
| 特点： | 内置电容 |
| 频率稳定性： | 0.032ppm |
| 频率公差： | ±75kHz |
| 阻抗： | 1 兆欧 |
| 电容： | 2.9pF |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 4-SMD |
| 尺寸/尺寸： | 0.197" L x 0.126" W（5.00mm x 3.20mm） |
| 高度： | 0.063"（1.60mm） |
| 包装： | 带卷 (TR) |
RO3118A
?
?
Ideal for 318.0 MHz Transmitters
Very Low Series Resistance
?
?
Quartz Stability
Surface-mount Ceramic Case
318.0 MHz
?
Complies with Directive 2002/95/EC (RoHS)
Pb
SAW
The RO3118A 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 318.0 MHz.
Absolute Maximum Ratings
Resonator
Rating
CW RF Power Dissipation (See: Typical Test Circuit)
DC Voltage Between Terminals (Observe ESD Precautions)
Case Temperature
Soldering Temperature (10 seconds / 5 cycles maximum)
Value
+0
±30
-40 to +85
260
Units
dBm
VDC
°C
°C
SM5035-4
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency, +25 °C
Insertion Loss
Quality Factor
Absolute Frequency
Tolerance from 318.0 MHz
Unloaded Q
50 ? Loaded Q
f C
? f C
IL
Q U
Q L
2,3,4,5
2,5,6
5,6,7
317.925
1.5
12000
2000
318.075
±75
2.0
MHz
kHz
dB
Temperature Stability
Turnover Temperature
T O
10
25
40
°C
Turnover Frequency
f O
6,7,8
f C
Frequency Temperature Coefficient
FTC
0.032
ppm/°C 2
Frequency Aging
Absolute Value during the First Year
|f A |
1
≤ 10
ppm/yr
DC Insulation Resistance between Any Two Terminals
5
1.0
M ?
RF Equivalent RLC Model
Motional Resistance
R M
19.8
?
Test Fixture Shunt Inductance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
L M
C M
C O
L TEST
5, 7, 9
5, 6, 9
2, 7
118
2.1
2.9
79
μH
fF
pF
nH
Lid Symbolization (in addition to Lot and/or Date Codes)
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
661 // YWWS
1.
2.
3.
4.
5.
6.
Frequency aging is the change in f C 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, f C , is measured at the minimum insertion loss point,
IL MIN , with the resonator in the 50 ? test system (VSWR ≤ 1.2:1). The
shunt inductance, L TEST , is tuned for parallel resonance with C O at f C .
Typically, f OSCILLATOR or f TRANSMITTER is approximately equal to the
resonator f C .
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 T C = +25 ± 2 °C.
The design, manufacturing process, and specifications of this device are
7.
8.
9.
10.
Derived mathematically from one or more of the following directly
measured parameters: f C , IL, 3 dB bandwidth, f C versus T C , and C O .
Turnover temperature, T O , is the temperature of maximum (or turnover)
frequency, f O . The nominal frequency at any case temperature, T C , may be
calculated from: f = f O [1 - FTC (T O -T C ) 2 ]. Typically oscillator T O is
approximately equal to the specified resonator T O .
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance C O
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: C P ≈ C O - 0.05 pF.
Tape and Reel standard per ANSI / EIA 481.
subject to change without notice.
www.RFM.com E-mail: info@rfm.com
? 2009-2011 by RF Monolithics, Inc.
Page 1 of 2
RO3118A - 6/27/11
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相关代理商/技术参数 |
参数描述 |
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| RO3118D | 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel |
| RO3118E | 功能描述:谐振器 318.0 MHz +/-75kHz Single Port RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel |
| RO3119A | 制造商:RF Monolithics (RFM) 功能描述:IC,RESON,317.5MHZ,SMD,2SM - Tape and Reel |
| RO3120A | 功能描述:谐振器 403.55MHz BW 75KHz IL 1.1dB Typ. SAW RoHS:否 制造商:Murata 频率:30 MHz 容差:25 PPM 系列:XRCGB 端接类型:SMD/SMT 工作温度范围:- 10 C to + 70 C 尺寸:1.6 mm W x 2 mm L x 0.65 mm H 封装:Reel |
| RO3122A | 制造商:RFM 功能描述:RO3122A293.125 MHZ SAW RESONATOR - Tape and Reel |
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