SM Tuning Fork Crystal
Tuning Fork Quartz Crystal
The tuning fork crystal provides the circuit designer with the ultimate in
size, performance, and economic trade-offs. This highly reliable, stable,
and accurate device is available in two micro -miniature sizes for time
base applications operating from a 32.768KHz reference frequency.
WX26B
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Very small, compact SM packaging
Rugged, resistant to shock and vibration
Low cost
Ideal for time of watches and clocks
Complies with Directive 2002/95/EC (RoHS Compliant)
Specifications:
WX26B
Frequency Range:
30.000 ~ 120.000 KHz
32.768 KHz Standard
Operating Temperature:
0°C ~ +50°C
-10°C ~ +60°C
-20°C ~ +70°C
-40°C ~ +85°C
-A
-B
-C
-L
Storage Temperature:
-30°C ~ +80°C
Frequency Tolerance:
± 50 ppm
± 30 ppm
± 20 ppm
-50
-30
-20
(at 25°C)
Temperature Coefficient:
Circuit Condition:
-0.04 ppm/°C
8 pF ~ 32 pF or series
12.5 pF (Standard) -None
Turnover Temperature:
Series Resistance:
25 ± 5 °C
All dimensions are in mm
Recommended Reflow Temperature Profile
Maximum resistance corresponds
to frequency. Please see R table.
Temperature(degC)
300
Reflow set temperature peak temperature
250
200
235degC Less Than 5sec
225±5degC
10±1sec
Cool down speed
1~4degC/sec
Drive Level:
1.0 μW max
200degC
Preheat set temperature
Less than 35sec
1~3.5degC/sec
160degC
150
100
50
150±10degC
70~100sec
Series Capacitance:
Parallel Capacitance:
Aging:
4.0 fF max
140degC
Reflow high temperature period
Reflow temperature rise speed
1~3degC/sec
2.0 pF max
Preheat time
Preheat temperature rise speed
± 3 ppm max per year
Optional Features:
Tape & Reel
-Standard
Ordering Information
Note:
Product name + Temperature Range + CL +
Frequency Tolerance + Other Specification
Code + Frequency.
1.
2.
3.
Other frequencies, tolerances, stabilities, and operating temperature ranges
available. Consult VTC Support for specific requirements.
Not all combinations of the above tolerances, stabilities, and temperature ranges
are available. Consult VTC Support if your requirement is not standard.
i.e. WX26BC50-32.768KHz
All specifications subject to change without notice.
Phone: +86 (10) 5820-3910
Fax: +86 (10) 5820-3915
Email: sales@vanlong.com
Web: http://www.vanlong.com
WX26B
© 2006 by Vanlong Technology Co., Ltd.
