SR479 Datasheet PDF - Vanlong Technology


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SR479
Vanlong Technology

Part Number SR479
Description 479.50 MHz One-Port SAW Resonator
Page 2 Pages

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DataSheet.in
479.50 MHz One-Port SAW Resonator
Ideal for 479.50 MHz Transmitters
Very Low Insertion Loss
Quartz Stability
Rugged, Hermetic, Low Profile TO-39 Package
SR479
Parameter
CW RF Power Dissipation
DC Voltage
Operating Temperature Range
Storage Temperature Range
Absolute Maximum Rating (Ta=25°C)
Rating
P0
VDC ±30
TA -10 ~ +60
Tstg -40 ~ +85
Electronic Characteristics
Parameter
Sym Minimum
Frequency (25°C)
Insertion Loss
Nominal Frequency
Tolerance from 479.50 MHz
fC NS
fC -
IL -
Quality Factor
Temperature Stability
Unloaded Q-Value
50Loaded Q-Value
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
QU
QL
TO
fO
FTC
-
-
25
-
-
Frequency Aging
Absolute Value during the First Year
DC Insulation Resistance Between any Two Pins
|fA| -
- 1.0
RF Equivalent RLC Model
Motional Resistance
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
RM -
LM -
CM -
CO 1.8
NS = Not Specified
Typical
479.50
-
1.3
11,960
1,650
-
fc
-0.032
-
-
16.0
63.5614
1.7350
2.1
Unit
dBm
V
°C
°C
Maximum
NS
± 75
1.8
-
-
55
-
-
10
-
23.0
-
-
2.4
Unit
MHz
KHz
dB
-
-
°C
KHz
ppm/°C2
ppm/yr
M
µH
fF
pF
Notes:
1. The center frequency, fC, is measured at the minimum IL point with
the resonator in the 50test system.
2. Unless noted otherwise, case temperature TC = +25°C ± 2°C.
3. 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.
4. Turnover temperature, T0, is the temperature of maximum (or
turnover) frequency, f0. The nominal frequency at any case
temperature, TC, may be calculated from: f = f0 [1 - FTC (T0 - TC)2].
5. This equivalent RLC model approximates resonator performance
near the resonant frequency and is provided for reference only. The
capacitance C0 is the measured static (nonmotional) capacitance
between Pin1 and Pin2. The measurement includes case parasitic
capacitance.
6. Derived mathematically from one or more of the following directly
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and C0.
7. The specifications of this device are based on the test circuit shown
above and subject to change or obsolescence without notice.
8. Typically, equipment utilizing this device requires emissions testing
and government approval, which is the responsibility of the
equipment manufacturer.
9. Our liability is only assumed for the Surface Acoustic Wave (SAW)
component(s) per se, not for applications, processes and circuits
implemented within components or assemblies.
10. For questions on technology, prices and delivery please contact our
sales offices or e-mail to sales@vanlong.com.
Phone: +86 10 6301 4184
Fax: +86 10 6301 9167
© 2004 by Vanlong Technology Co., Ltd.
Email: sales@vanlong.com
Web: http://www.vanlong.com
SR479



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DataSheet.in
479.50 MHz One-Port SAW Resonator
Package Dimensions (TO-39)
Marking
SR479
479.50
Ink Marking
Color: Black or Blue
Typical Application Circuit
Low Power Transmitter Application
Electrical Connections
Terminals
1
2
3
Connection
Input/ Output
Output/ Input
Case-Ground
Package Dimensions
Dimensions
A
B
C
D
E
F
G
Nom (mm)
Min Max
9.10
9.50
3.20
3.60
2.80
3.20
Φ0.25
Φ0.65
4.98
5.18
2.54 Nominal
0.4 0.5
Equivalent LC Model and Test Circuit
ΩΩ
Local Oscillator Application
Typical Frequency Response
Temperature Characteristics
fc = fo, Tc = To
Phone: +86 10 6301 4184
Fax: +86 10 6301 9167
© 2004 by Vanlong Technology Co., Ltd.
T= Tc –To (°C)
The curve shown above accounts for
resonator contribution only and does not
include oscillator temperature
characteristics.
Email: sales@vanlong.com
Web: http://www.vanlong.com
SR479




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