27
Crystal unit
Specifications (characteristics)
Recommended soldering patternExternal dimensions
(Unit: mm)
Do not connect
#2 and #3 to external device.
Internal connection
(Unit: mm)
#4 #4 #3
#1 #2
#3
#1
0.5 5.5 (0.9) (0.9)
1.9
#2
3.2
2.38
2.54 Max. 3.8 Max.
8.0 Max.
20.000M
572E
1.3
1.91.31.9
1.3 4.2
SMALL SMD HIGH - FREQUENCY CRYSTAL UNIT
MA-306
• High-density mounting-type SMD.
• Excellent reliability and environment capability.
• Capable of covering a wide frequency range. ( from 17.734 MHz to 41 MHz)
Item
Nominal frequency
Temperature
range
Drive level
Frequency tolerance (standard)
Frequency temperature characteristics
(standard)
Load capacitance
Series resistance
Shunt capacitance
Insulation resistance
Aging
Shock resistance
Symbol
f
TSTG
TOPR
GL
DL
∆f/f
CL
R1
C0
IR
fa
S.R.
Specifications
17.734 MHz to 41.000 MHz
-55 °C to +100 °C
-20 °C to +70 °C
2 mW Max.
10 µW to 100 µW
±50 x 10-6
±30 x 10-6
10 pF to ∞
60 ΩMax.
5 pF Max.
500 MΩMin.
±5 x 10-6 / year Max.
±10 x 10-6 Max.
Remarks
Fundamental mode
Stored as bare product after unpacking
Only crystal oscillation is guaranteed
Ta= +25 °C ±3 °C
-20 °C to +70 °C
Please specify
-20 °C to +70 °C, DL=100 µW
Ta=+25 °C ±3 °C, first year
Three drops on a hard board from 750 mm or excitation test
with 29400 m/s2x 0.3 ms x 1/2 sine wave x 3 directions
Storage temperature
Operating temperature
Maximum drive level
Recommended drive level
Actual size
Metal may be exposed on the top of this product. This won't affect any quality, reliability or electrical spec.
Products number
Q22
M
A306xxxxx00
