Resistance Weld SMD Crystal
RoHS Compliant / Pb Free
Model: HC49SDLF
Rev. 12/4/2006
Page 1 of 2
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FEATURES
• Stock Standard (see page 2)
• Fundamental to 50 MHz
OPTIONS
• Tolerances to 10 PPM
• Stabilities to 5 PPM
• Tape and Reel (1,000 pcs. STD) • Temperatures to -40ºC ~ +105ºC
• 3.2mm Height Max (HC49SSDLF)
10.3 M ax
4.5 M ax
• PART NUMBERLearn More - Internet Required
3.8 M ax
Frequency Range (MHz)
Part Number
Model Number
HC49SDLF
278LF-Frequency-xxxxx
3.200 ~ 70.000
• STANDARD SPECIFICATIONS1
PARAMETERS
Frequency Range
Frequency Tolerance @ 25ºC
Frequency Stability, ref @ 25ºC
Over Operating Temp Range
Temperature Range
Operating
Storage
Shunt Capacitance (Co)
MAX (unless otherwise noted)
3.200 ~ 70.000 MHz
±50 PPM 1,2
13.9 M ax
11.7 M ax
5.0 M ax
±50 PPM 1
0.75±0.35
-20ºC ~ +70ºC 1
-40ºC ~ +85ºC
7pF
(TOPR)
(TSTG)
Recommended
HC49SD Solder Pad Layout
Load Capacitance
(CL)
10 pF ~ Series
(Customer Specified)
0.5 mW
15.0±0.1
Drive Level
Aging per year
2.0±0.1
±5 PPM
Maximum Soldering Temp / Time
Moisture Sensitivity Level (MSL)
260ºC / 10 Seconds
1
4.0±0.1
1
Other tolerances, stabilities & operating temperature ranges available. Consult Fox Customer
Service for specific requirements.
2
Crystal has a±30ppm tolerance specification for all standard part numbers. These part numbers
All dimensions are in millimeters.
are listed on page 2 of this datasheet.
All specifications subject to change without notice.
TERMINATION FINISH: Sn/3.0Ag/0.5Cu
Frequency Range
Operating Mode
Max ESR Ω
(MHz)
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
Fundamental
3rd OT
3.200 ~ 3.500
300
200
150
120
100
80
60
40
30
100
3.500+ ~ 4.000
4.000+ ~ 5.000
5.000+ ~ 6.000
6.000+ ~ 7.000
7.000+ ~ 9.000
9.000+ ~ 13.000
13.000+ ~ 20.000
20.000+ ~ 50.000
27.000 ~ 70.000
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