TUNING FORK CRYSTAL UNIT
(SMD ・ Ceramic Package)
RoHS compliant / Pb free
CM315D
3,000pcs/reel
■ FEATURES
● Frequency range : 32.768kHz
● External dimensions (mm)
L : 3.2 x W : 1.5 x H : 0.9
● Applications
Smart Meters / Small mobile devices /
Consumer products
■ DIMENSION
■ SOLDER PAD LAYOUT
[mm]
[mm]
■ STANDARD SPECIFICATIONS
Model
CM315D
f0
32.768kHz
Δf/f0
±5ppm / ±10ppm / ±20ppm
at 25℃
CL
6.0pF / 7.0pF / 9.0pF / 12.5pF
Please specify your requirement
Operating Temperature Range
TOPR
-40℃ ~ +85℃
Storage Temperature Range
TSTR
-55℃ ~ +125℃
Turnover Temperature
TM
25℃±5℃
Temperature Coefficient
β
-0.034±0.006ppm/℃2
Motional (series) resistance
R1
70KΩ Max.
Level of drive
DL
1μW Max.
Δf/f0
±3ppm Max.
C0
0.95pF Typ.
Item
Nominal Frequency
Frequency Tolerance
Load capacitance
Aging (first year)
Shunt capacitance
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
Conditions
at 25℃
25℃±3℃
■ PART NUMBERING SYSTEM
CM315D 32768 D Z F T - □□□
Frequency Tolerance
(at 25℃)
Frequency
Frequency Tolerance over
Operating Temp. Range
T
Please specify
the frequency
in Hz.
D
E
H
±20ppm (STD)
±10ppm
±5ppm
Z
CITIZEN
management code
Package specification
Only Tape & Reel
Standard Spec.
Ref. Code for
internal use.
Load capacitance (CL)
B
C
F
Y
6.0pF
9.0pF (STD)
12.5pF (STD)
7.0pF
*Please contact us for specifications available.
■ Part Marking
■ Reflow profile
[standard]
ym###
y : The last digit of production year
m : Production month (See Table.1)
# : Production Lot No.
Table.1
Month
Code
Jan Feb
1
2
…
…
Sep Oct Nov Dec
9
X
Y
Z
■ Packing
Conforming to JIS C 0806 TB1208NEIAJ and RC-1009B TE1208N
Q'ty/reel
3,000
a
12.0
b
5.5
c
4.0
d (φ)
1.0
e
3.6
Product specifications are subject to change without notice.
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
Conforming to JIS C 0806 R12R and EIAJ RC-1009B R15
f
0.3
g
1.0
h
5°
j
1.9
k
5°
l
13.0
m (φ) n (φ)
180
60
Rev.2
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