TUNING FORK CRYSTAL UNIT
(SMD • Ceramic Package)
RoHS compliant / Pb free
CM315
■
FEATURES
3000pcs/reel
7Tuning
fork crystal with ceramic packaged type.
7High-density
SMD type
Ultra-light weight with ultra-miniature packaging.
High-stability assured with tight vacuum sealing.
7Most
appropriate for portable devices and mobile
telecommunications devices.
Life-size
■
DIMENSION [mm]
3.2±0.1
1.5±0.1
■
SOLDER PAD LAYOUT [mm]
4-R0.15
0.9 Max.
1.1
1.4
1.1
（2.4）
1.8
C0.3
0.1
Internal connection
0.6
0.1
1.3
Do not design any patterns on shaded area.
■
STANDARD SPECIFICATIONS
Item
Nominal Frequency
Frequency Tolerance
Load capacitance
Operating Temperature Range
Storage Temperature Range
Turnover Temperature
Temperature Coefficient
Motional (series) resistance
Level of drive
Aging (first year)
Shunt capacitance
Model
CM315
32.768kHz
±20ppm
9.0pF, 12.5pF
−
40℃∼
＋
85℃
−
55℃∼
＋
125℃
Conditions
at 25˚C
Need to specify your requirement
f
0
△
f/f
0
C
L
T
OPR
T
STR
T
M
β
R
1
D
L
△
f/f
0
25℃±5℃
−
0.034±0.006ppm/℃
2
70KΩMax.
1μW Max.
±3ppm Max.
0.95pF Typ.
at 25˚C
25℃±3℃
C
0
http://cfm.citizen.co.jp/english/product/pr02.html
1.9
CITIZEN [ CITIZEN ELECTRONICS CO., LTD. ]
