WATCH CRYSTALS 32.768kHz
ISSUE 9; 12 JUNE 1998
Outline in mm (inches) - (scale 3:1)
Delivery Options
n
Product available from stock. Please see p4 for details
6
(
.
2
.
m
a
x
0
2
4
4
m
a
x
)
A
c
t
u
a
l
Holder Style
n
Watch crystals are press sealed. Two sizes are avail-
8
(
.
2
m
2
a
x
S
i
z
e
0
.
3
3
m
a
x
)
able: 3 × 8.2mm & 2 × 6.2mm
A
c
t
u
a
l
S
i
z
e
4
(
.
0
.
m
i
n
Æ
0
.
2
General Specifications
n
Load Capacitance (CL): 6pF to 15pF
0
1
5
7
m
i
n
)
(
Æ
0
.
0
0
8
)
0
.
6
(
0
.
0
2
4
)
n
Drive Level: 1.0mW max.
Æ
0
.
3
5
(
Æ
0
.
0
1
4
)
n
Static Capacitance (C0): 1.6pF typical
1
(
0
.
0
Æ
2
.
0
0
.
3
9
3
)
(
Æ
0
.
0
7
9
)
Standard Frequency Tolerances and Stabilities
n
20ppm, 30ppm, 50ppm, 100ppm
Operating Temperature Ranges
n
0 to 50°C
–20 to 70°C
–30 to 80°C
1
.
1
(
0
.
0
4
3
)
–10 to 60°C
Æ
3
.
1
m
a
x
.
(
Æ
0
.
1
2
2
m
a
x
.
)
Storage Temperature Range
n
–55 to 125°C
Marking
n
Frequency Temperature Curve
D
f
/
f
0
Frequency (3 × 8.2mm only; 2 × 6.2mm product is
(
p
p
m
)
unmarked)
Minimum Order Information Required
n
1
2
0
0
0
0
Frequency + Holder + Frequency Tolerance @ 25°C
+ Operating Temperature Range + Circuit Condition
x
n
m
a
m
i
3
4
0
0
0
0
Df / f0 = -0.038(T - T0 )2 ± 10%
T
1
0
0
0
T
o
-
5
0
2
5
T
o
+
5
0
T
o
+
1
0
0
T
o
T
(
°
C
)
Electrical Specification – maximum limiting values
Frequency Range
Frequency Tolerance
@ 25°C 2°C
Operating
Temperature Range
Frequency Stability Available Over
Operating Temperature
ESR
Max
Vibration
Mode
Minimum
–25ppm
–50ppm
–85ppm
–150ppm
Maximum
–100ppm
–100ppm
–100ppm
–300ppm
32.768kHz
10ppm to 100ppm
0 to 50°C
–10 to 60°C
–20 to 70°C
–30 to 80°C
Fundamental
50kW
Europe Tel: +44 (0)1460 74433 Fax: +44 (0)1460 72578
7
Americas Tel: +1 919 941 0430 Fax: +1 919 941 0530