CRYSTAL - RESONATORS


DIMENSIONS: (UNIT=mm)

AT-308: L=8.2 M=10.0 N=1.1 O=3.1 P=0.35
AT-206: L=6.2 M=10.0 N=0.7 O=2.1 P=0.26
AT-145: L=5.1 M=4.30 N=0.45 O=1.5 P=0.20
FREQUENCY VS TEMPERATURE CURVE

STANDARD SPECIFICATIONS

Model
Item
AT-308
AT-206
AT-145
Conditions
Nominal frequency
f0
30KHz~40KHz
30KHz~165KHz
200KHz
Please contact us for changes in frequency.
Frequency tolerance
f/f0
5ppm
10ppm
50ppm
AT 25C
Frequency vs. Temperature characteristics
f/f0
See drawing
-10C~+60C
Turnover temperature
Tm
25C~+2C
-
Temperature coefficient
-0.0340.006ppm/C
Varies depending on frequency.
Operating temperature range
TORP
-10C~+60C
-
Storage temperature range
TSTG
-40C~+85C
-
Equivalent series resistance
R1
35k~50k
AT25C
Load capacitance
CL
12.5pF~ TYP.
Please specify
Motional capacitance
C1
1~4fF TYP.
Varies depending on frequency.
Shunt capacitance
C0
0.8~1.7fF TYP.
capacitance level
V
125~800 TYP.
Drive level
DL
1 W MAX
-
Insulation resistance
IR
500M MIN.
DC100V15V
Aging (First year)
f/f0
5ppm MAX.
25C 3C
Sealing
-
1 x 10 Pa.m /s MAX.
Shock resistance
5ppm MAX.
Drop test of 3 times on a hard board from 75cm height or
shock test of 3000G x 0.3ms x 1/2 sin wave x 3 directions
Conditions will vary depending on the frequency.