Crystal unit
CYLINDER HIGH-STABILITY CRYSTAL UNIT
CA-303HS
• High-stability in a dia.3 mm cylindrical package.
• Small package allows high-density mounting and less weight.
• Excellent shock resistance and environmental capability.
• High-stability with tight vacuum sealing and AT-cut single side
mounting structure.
• Suitable for small telecommunication equipment.
Actual size
Specifications (characteristics)
Item
Symbol
f
T
STG
T
OPR
GL
DL
T
SOL
∆
f/f
Specifications
9.600 MHz to 27.000 MHz
-55 °C to +125 °C
-40 °C to +85 °C
2 mW Max.
10 µW to 100 µW
+240
°C
Max. within 10
s
and under +200
°C
within 40
s
Remarks
Fundamental mode
Nominal frequency range
Temperature
range
Drive level
Storage temperature
Operating temperature
Maximum drive level
Recommended drive level
Only crystal oscillation is guaranteed
Soldering condition (reflow)
Frequency tolerance (standard)
Frequency temperature characteristics
Load capacitance
Series resistance
Shunt capacitance
Insulation resistance
Aging
±10 x 10
-6
As per below table
Ta =+25
°C
±3
°C
,DL=100 µW
C
L
R
1
C
0
IR
fa
10 pF to
∞
As per below table
3.0 pF Max.
500 MΩ Min.
±1 x 10
-6
/ year Max.
Please specify
Operable temperature range, DL=100 µW
Ta =+25 °C ±1 °C, 100 µW
Three drops on a hard wooden board from 750 mm or
Shock resistance
S.R.
±1 x 10 Max.
-6
excitation test with 29400 m/s
2
x 0.3 ms x 1/2 sine wave
x 3 directions
Measured values for frequency tolerance and temperature characteristics need to be brought into mutual correlation prior to the start of production.
Frequency temperature characteristics
Temperature range
0
°C
to +50
°C
-10
°C
to +60
°C
-20
°C
to +70
°C
-30
°C
to +80
°C
-40
°C
to +85
°C
External dimensions
(Unit: mm)
Frequency tolerance
± 3 x 10
-6
Min.
± 5 x 10
-6
Min.
± 7 x 10
-6
Min.
±10 x 10
-6
Min.
±15 x 10
-6
Min.
D
1
B
D
2
128AU61
L
1
L
2
Series resistance
Frequency (MHz)
9.6
≤
f <
10.0
10.0
≤
f <
12
.0
12.0
≤
f < 16.0
16.0
≤
f
≤
27.0
Series resistance (Ω)
50
Ω
Max.
40
Ω
Max.
30
Ω
Max.
25
Ω
Max.
L
1
L
2
D
1
D
2
ø0.3
B
1.1
8.9 Max.
9.5 Min.
ø3.1 Max.
Sample products are without marking.
22
SEIKO [ SEIKO EPSON CORPORATION ]
