LOW FREQUENCY, CYLINDRICAL TYPE
WATCH CRYSTALS 32.768 kHz
AB38T and AB26T
FEATURES:
• Watch Frequency.
• Formed Leads, Low Profile (-M).
• Excellent Heat Resistance.
• Frequency Range from 30 kHz to 200 kHz.
APPLICATIONS:
• Real Time Clock.
• Measuring Instruments.
• Clock Source for Communication or A/ V Equipment.
STANDARD SPECIFICATIONS
PARAMETERS
AB38T
AB26T
32.768 kHz
30 kHz to 200 kHz
Frequency Range
32.768 kHz
Operating Temperature
Storage Temperature
Turnover Temperature
-10°C to + 60°C (See Options)
-40°C to + 85°C
25°C to ± 5°C
AB38T
@
Frequency Tolerance
25°C
± 20 ppm max.
(32.768 KHz) & ± 30ppm(other)
Frequency Stability over Temp
-0.034± 0.006 ppm / (25-T)2
30 k Ω max. 35 kΩ max.(32.768KHz)(other)
35 k Ω max. - 50KHz)(other)
Dimensions: Inches (mm)
Equivalent Series Resistance (ESR)
Shunt Capacitance C
0
1.6 pF typical
0.8 to 1.7 pF typical
Load Capacitance C (See Note 1)
12.5 pF typical (See Options)
L
Motion Capacitance C
1
0.0035 pF typical
1 - 4 pF typical
Drive Level
1 µ W max.
Quality Factor Q
90,000 typical
460 typical
70,000 typical
Capacitance Ratio C / C
425 - 800 typical
0
1
Insulation Resistance:
500 M Ω min. at 100 Vdc ±15 V
Aging @ 25°C First year
±3 ppm max.
(32.768 KHz) & ± 5ppm (other)
Please see environmental, and mechanical specifications on page 68, Group 3.
Marking, see page 77.
AB26T
Note 1: Custom CL upon request at 6 pF. Check with us for other CL value.
(*) Example: Stability at -20°C is: -0.035 x [25-(-20)]2 = -71 ppm.
TYPICAL FREQUENCY
-VS-
TEMPERATURE CURVE
ORDERING OPTIONS
ORDERING OPTIONS
-10
°
25°
60
°
ABXXT - Frequency - CL - Temperature - Tolerance - Value Added
-
Packaging
Reel)
Load cap. in pF
38 or 26
- T (Tape
&
0°
TEMP
or
-TY (Tray Packing)
-S for Series
-M = (SMT Formed Leads)
found onpage72
XX.XXXX kHz
-E for 0°C to + 70°C
-B for -20°C to + 70°C
-50
°
-C for -30°C to + 70°C
-N for -30°C to + 85°C
-D for -40°C to + 85°C
-1 for
-7 for
±
±
10 ppm ( )
15 ppm
( ) Please call for availability.
*
*
NOTE: Left blank if standard • All specifications and markings subject to change without notice
ABRACON
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
®
29 Journey • Aliso Viejo, CA 92656 • USA
- 25 -
(949) 448-7070
•
FAX: (949) 448-8484
C O R P O R A T I O N
E-MAIL: abinfo
@abracon.com • INTERNET ADDRESS: www.abracon.com