WX, WX26, & WX15
32.768 kHz WATCH CRYSTALS IN CYLINDRICAL PACKAGE
(WX: 3 x 8mm; WX26: 2 x 6 mm; WX15: 1.5 x 5 mm)
STANDARD SPECIFICATIONS:
Frequency
32.768 kHz
Calibration Frequency Tolerance at 25° C
Frequency Stability over Operating
Temperature Range
± 50 PPM
Can be calculated by the following formula:
Frequency shift from 25°C to T°C in PPM = - 0.038 X (T - 25)2 ± 10%
Operating Temperature Range
Load Capacitance
-10°C to +60°C
12.5 pF is standard for WX & WX26, 8 pF is standard for WX15
Equivalent Series Resistance (ESR)
Drive Level
40 kW maximum
1mW
Aging at 25° C
± 3 PPM per year
Shunt Capacitance
1.7 pF maximum
Packaging
Bulk (1000 or 2000 per bag, 10,000 per box)
PART NUMBERING GUIDE:
n
The Pletronics part number for this crystal with standard specifications is:
WX-32.768 kHz, WX26-32.768 kHz, or WX15-32.768 kHz.
n
When customer’s requirements are non-standard, a special engineering part number will be assigned.
PACKAGE OUTLINE (NOT TO SCALE):
LL: Lead Length
LD: Lead Diameter
LS: Lead Spacing
INCHES (MILLIMETERS)
Model
WX
Diameter( *D )
Length( *L )
LL
LD
LS
0.122 (3.1) max
0.323 (8.2) max
0.244 (6.2) max
0.201 (5.1) max
0.394 (10.0)
0.394 (10.0)
0.169 (4.3)
0.014 (0.35)
0.010 (0.26)
0.008 (0.2)
0.043 (1.1)
0.028 (0.7)
0.018 (0.45)
WX26 0.083 (2.1) max
WX15 0.059 (1.5) max
January 2000
Telephone: (425) 776-1880, Fax: (425) 776-2760, e-mail: ple-sales@pletronics.com
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