SMD Quartz Crystal Resonator
1. QUARTZ CRYSTAL UNIT SPECIFICATION
Item
Specifications
Symbol
Min
Type
Max
Remark
Units
1. Production type
SMD Quartz Crystal Resonator
2. Holder
SMD 2520
3. Mode of oscillation
■ Fundamental
Seam Seal
□ 3 Overtone
□ 5 Overtone
4. Frequency
FL
16.000000
5. Load capacitance
CL
9
6. Frequency tolerance
Tol
± 10
ppm
at 25℃ ± 3℃
7. Equivalent resistance
Rs
100
Ω
Max.
8. Working temperature range
TR
-10 ～ 70
℃
9. Freq. Temp. Characteristics
TC
± 10
ppm
10. Drive level
DL
100
μW
11. Shunt Capacitance
C0
5
pF
-40 ～ 85
℃
500
MΩ
12. Storage temperature range
13. Insulation resistance
14. Measure Circuit
15. Aging
※
MHz
pF
Min.
π network
S&A 250B
5
working temperature
ppm/Yr
Max.
This product doesn't include harmful substance that stipulated by RoHS
ΔF
SMD Quartz Crystal Resonator
2. MARKING & DIMENSIONS
2.1 DIMENSIONS (Unit: mm)
2.2 Recommended Land Pattern (Unit: mm)
SMD Quartz Crystal Resonator
2.3 INSIDE STRUCTURE
DESCRIPTION
1
Quartz Blank
2
Electrode
3
Lid
4
Base
5
Conductive adhesive
SMD Quartz Crystal Resonator
3. CHARACTERISTICS
Units and values indicated with { } in this specification are the former units and the specified values.
Standard atmospheric conditions:
Unless otherwise specified, the standard range of atmospheric conditions for making
measurements and tests is as follows:
Ambient temperature: 15℃ to 35℃
Relative humidity : 25% to 85%
Air pressure : 86 to 106 kPa
If there is any doubt about the results, measurements shall be made within the following limits:
Ambient temperature : 25℃±1℃
Relative humidity : 63% to 67%
Air pressure : 86 to 106 kPa
Operating temperature range:
The operating temperature range is the range of ambient temperatures at which the quartz crystal
oscillator can be stored without damage. Conditions are as specified elsewhere on these
specifications.
Operating temperature range: -10℃ to +70℃
Storage temperature range:
The storage temperature range is the range of ambient temperatures at which the quartz crystal
oscillator can be stored without damage. Conditions are as specified elsewhere on these
specifications.
Storage temperature range: -40℃ to +85℃
SMD Quartz Crystal Resonator
3.1 Mechanical characteristics
Provided that measurement shall be carried out after letting it alone in the room temperature for 1h.
Item
Specifications
1
Drop Test
Dropping 3 times from the height of 75cm onto hard wooden board of thickness
more than 30mm.
2
Mechanical
Shock
Devices are shocked to half sine wave (1000 G) three mutually perpendicular
axes each 3 times.
3
Vibration
(1) Vibration Frequency
10~55Hz
(2) Cycle
1 to 2 min
(3) Amplitude
1.0mm
(4) Direction
X.Y.Z
(5) Time
2hr for each direction
4
Solderability
MIL - STD - 20E Method 208C
Temperature
245℃±5℃
Material
H63A (Silver 2 ~ 3 %)
Immersion depth
0.5 mm minimum
Immersion time
3 ± 0.5 seconds
Flux
Rosin resin methyl alcohol solvent ( 1 : 4 )
5
Resistance to
Soldering
Heat
MIL - SLD -202, Method 210, Condition I or J
10 sec immersion into 260 ± 5℃ solder pot, above 180℃ is 90 ~ 120 sec.
*Frequency variation shall be within +/-5ppm and equivalent resistance less than ±15% max. after the test.
Note: Measuring the frequency should be done after keeping test samples at room temperature for 24 hours.
SMD Quartz Crystal Resonator
3.2 Environmental characteristics
Provided that measurement shall be carried out after letting it alone in the room temperature for 1h.
Item
1
2
3
4
Specifications
Humidity
It alone at 40℃± 2℃ in humidity of 90~95% for 48h.
Storage in Low
Temperature
Storage in High
Temperature
It alone at –40℃± 2℃ for 240h.
It alone at 85℃± 2℃ for 240h.
Temperature
The following temperature cycle (10 cycles). Refer to below Fig. Temperature
Cycle
shift from low to high, high to low shall be done in 1℃/min.
85+/-5℃
30 min
25+/-5℃
25+/-5℃
2 min
2 min
-40+/-5
30 min
1 Cycle
*Frequency variation shall be within +/-5ppm and equivalent resistance less than ±15% max. after the test.
Note: Measuring the frequency should be done after keeping test samples at room temperature for 24 hours.
3.3 SUGGESTED IR REFLOW PROFILE
SMD Quartz Crystal Resonator
4. Packing
SMD Quartz Crystal Resonator
5. Note
1. Only the lead should be heated when soldering.
In case that the package temperature is exceeding 150°C , it may impair the crystal or may
cause the crystal quartz to destroy.
2. Pulling the lead strongly may cause cracking of the hermetic grass seal bending the lead
closely from the case may also cause same problem, so when the lead needs to be bent,
please leave move than 05.mm of lead from the case.
3. Too much shock or vibration is not allowed. According to conditions such as machine shock
during the assembly, the internal quartz crystal might be damaged.
Please check your conditions carefully when using it in advance.
4. Don't storage or use in the environment that temperature may change rapidly to avoid the
condensation. And also we recommend to storage the products in the normal environment.
(Temperature, humidity)
5. This product can be subjected to ultrasonic cleaning. However, since the oscillator may be
affected depending on the condition, be sure to check it.
6. Applying excessive drive level to the quartz crystal may cause deterioration for characteristics
or damage.
Circuit design must be such as to maintain a proper drive level.
7. Unless adequate negative resistance is allocated in the oscillation circuit, startup time of
oscillation may be increased or no oscillation may occur. In order to avoid this, provide enough
negative resistance in the circuitry design.