WC Series Crystals
¾ 32.768KHZ Only
¾ Standard Cylindrical Holders
¾ RoHS Compliant Available
¾ Industrial Temperature Range
ELECTRICAL SPECIFICATIONS:
Series
Frequency Range
WC155
32.768KHZ
WC26
32.768KHZ
WC38
32.768KHZ
Frequency Tolerance
See Part Number Guide
See Part Number Guide
-.034(±.006)ppm/°C2(T-To)2
+25°C ±5°C
See Part Number Guide
-.034(±.006)ppm/°C2(T-To)2
+25°C ±5°C
Frequency Stability
Turnover Temperature (To)
Operating Temp. Range
Storage Temp. Range
Aging
Shunt Capacitance
Equivalent Series Resistance
Load Capacitance
Drive Level
-.034(±.006)ppm/°C2(T-To)2
+25°C ±5°C
-40°C to +85°C
-40°C to +85°C
±3ppm / 1st year max
1.00pF typical
40K Ohms max
6pF, 8pF, or12.5pF
1uWatt max
-40°C to +85°C
-40°C to +85°C
±3ppm / 1st year max
1.35pF typical
35K Ohms max
6pF, 8pF, or12.5pF
1uWatt max
-40°C to +85°C
-40°C to +85°C
±3ppm / 1st year max
1.60pF typical
35K Ohms max
6pF, 8pF, or12.5pF
1uWatt max
Motional Capacitance
Capacitance Ratio
Quality Factor
2.5fF typical
400 typical
80K typical
3.0fF typical
450 typical
70K typical
3.5fF typical
460 typical
90K typical
MECHANICAL DIMENSIONS:
PART NUMBERING GUIDE:
32.768KHZ
Load Capacitance
Blank = 12.5pF
6 = 6pF
Series
Frequency Tolerance
Blank = ±20 ppm
-08 = ±8 ppm
RoHS Compliant
Blank = Not Compliant
F = Is Compliant
WC155
WC26
WC38
8 = 8pF
-10 = ±10 ppm
Please consult with MMD sales department for any other parameters or options.
MMD Components, 30400 Esperanza, Rancho Santa Margarita, CA, 92688
Phone: (949) 709-5075, Fax: (949) 709-3536, www.mmdcomp.com
Sales@mmdcomp.com
Specifications subject to change without notice
Revision 12/19/06 G