33
Crystal unit
34
Specifications (characteristics)
Specifications (characteristics)
CYLINDER HIGH-FREQUENCY CRYSTAL UNIT
CA-301
Product number (please refer to page 1)
Q21CA301xxxxx00
• Compact design with case as small as 3 mm in diameter while still maintain-
ing excellent characteristics of AT-cut.
• High-stability assured with tight vacuum sealing.
• Capable of covering a frequency range from 4 MHz to 64 MHz.
• Available for complete lead (Pb)-free product.
Item Symbol Specifications Remarks
Nominal frequency f 4.000 MHz to 29.999 MHz Fundamental mode
30.000 MHz to 64.000 MHz 3rd overtone mode
Temperature
range
Storage temperature
TSTG -40 ˚C to +85 ˚C Stored as bare product after unpacking
Operating temperature
TOPR -20 ˚C to +70 ˚C The operating temperature range is -10 ˚C to +60 ˚C
for 5.5 MHz and below
Recommended drive level DL 10 µW to 100 µW
Frequency tolerance (standard) Δf/f ±30 x 10-6 (Under 5.5 MHz: ±50 x 10-6, ±100 x 10-6) Ta = +25 ˚C
Frequency temperature
characteristics (standard)
Under 5.5 MHz: ±50 x 10-6 -10 ˚C to +60 ˚C
Over 5.5 MHz: ±30 x 10-6 -20 ˚C to +70 ˚C
Load capacitance CLFundamental: 10 pF to ∞. Over tone: 5 pF to ∞Please specify
Series resistance R1 As per below table -20 ˚C to +70 ˚C, DL = 100 µW
Shunt capacitance C05 pF Max.
Insulation resistance IR 500 MΩ Min.
Aging fa ±5 x 10-6 / year Max. Ta = +25 ˚C ±3 ˚C, first year
Shock resistance S.R. ±10 x10-6 Max.
Three drops on a hard board from 750 mm or excitation
test with 29400 m/s2 x 0.3 ms x 1/2 sine wave x 3
directions
∗1 8.0 MHz < f < 8.2 MHz: Unavailable. 4.0 MHz f < 5.5 MHz : As per below table.
∗2 26.000 MHz ≤ f < 30.000 MHz : please contact us for inquiries for 3rd overtone mode.
External dimensions (Unit: mm)
D1
L1L2
B
D2
Series resistance
Frequency (MHz) Series resistance (Ω) mode
4.0 ≤ f < 5.5 150 Ω Max.
Fundamental
5.5 ≤ f < 6.0 100 Ω Max.
6.0 ≤ f < 10.0 80 Ω Max.
10.0 ≤ f < 12.0 60 Ω Max.
12.0 ≤ f < 16.0 50 Ω Max.
16.0 ≤ f < 30.0 40 Ω Max.
26.0 ≤ f < 36.0 100 Ω Max. 3rd overtone
36.0 ≤ f ≤ 64.0 80 Ω Max.
Available frequencies from 4.0 MHz to less than 5.5 MHz
Frequency (MHz)
4.000 MHz 4.433619 MHz
4.032 MHz 4.500 MHz
4.096 MHz 4.800 MHz
4.190 MHz 4.842673 MHz
4.194304 MHz 4.9152 MHz
Model L1 L2 D1 D2 B
CA-301 Under 5.5 MHz 9.3 Max. 9.5 Min.
ø3.1 Max.
ø0.3 1.1
Over 5.5 MHz 8.9 Max. 9.5 Min.
ø3.1 Max.
ø0.3 1.1
Sample products are without marking.
Actual size
