T38, T26, T15
32.768 KHz Tuning Fork Watch Crystals
MERCURY
Since 1973
•
Micro tubular holder (cylindrical type) X-cut tuning fork crystals.
•
Ideal for 1Hz timing frequency.
•
Compact and high-shock.
SPECIFICATIONS
Frequency:
Crystal Holder Prefix:
MEC Part Number:
Holder Sizes:
Frequency Tolerance at 25°C:
Maximum Series Resistance:
Quality Factor (Q):
Motional Capacitance (C1):
Shunt Capacitance (Co):
Capacitance Ratio (Co/C1):
Load Capacitance (CL):
Vibration Type:
Turnover Temperature (TT):
Drive Level:
Parabolic Curvature Constant:
Operating Temperature Range:
Storage Temperature Range:
Shock:
Vibration:
Aging:
T15
T15-32.768K-8P
1.5
Ø
mm x 5.0mm
40 k max.
40,000 minimum
0.0025 pf typical
1.00 pf typical
400 typical
8pF typical
32.768 kHz
T26
T26-32.768K-12.5P
2.0
Ø
mm x 6.0mm
35 k max.
50,000 minimum
0.0030 pf typical
1.35 pf typical
450 typical
6 pF or 12.5 pF
X-cut
25°C ±5°C
1 µW max.
-0.035ppm / °C typical
-10°C to +60°C
-30°C to +70°C
3 ppm maximum 3 drops from a height of 75 cm onto hardwood
3 ppm maximum
First year: 3 ppm maximum at 25°C
2
T38
T38-32.768K-12.5P
3.0
Ø
mm x 8.0mm
35 k max.
50,000 minimum
0.0035 pf typical
1.60 pf typical
460 typical
6 pF or 12.5pF
±15 ppm; ±20 ppm (standard), ±30 ppm
MERCURY
www.mercury-crystal.com
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail:
mercury@mercury-crystal.com
- 26 -
MERCURY [ MERCURY UNITED ELECTRONICS INC ]
