LOW FREQUENCY, 32.768kHz CYLINDRICAL TYPE
TUNING FORK CRYSTALS
AB38T and AB26T
FEATURES:
Watch frequency. Frequency range from 30kHz to 200kHz. Excellent heat resistance.
ABXXT - Frequency - CL - Temperature - Tolerance
38 or 26
XX.XXXX kHz
Load cap. in pF
or
-S for Series
-E for 0C to + 70C
-B for -20C to + 70C
-C for -30C to + 70C
-N for -30C to + 85C
-D for -40C to + 85C
Environmental, and mechanical specifications, see appendix C. Group 3.
Marking, see appendix G.
Recommended handling, see appendix F.
Application notes, see appendix A.
Dimensions: Inches (mm)
TYPICAL FREQUENCY
-
V S
-
TEMPERATURE CURVE
AB38T
AB26T
PARAMETERS
AB38T
AB26T
Note : Custom C
L
upon request at 6 pF. Check with us for other C
L
value.
** Example: Stability at -20C is: -0.035 x [25-(-20)]
2
= -71ppm.
APPLICATIONS:
Real time clock. Measuring instruments.
Clock source for communication or A/ V equipment.
0
-10
25
60
-50
TEMP
* Please call for availability.
S
S
T
T
A
A
N
N
D
D
A
A
R
R
D
D
S
S
P
P
E
E
C
C
I
I
F
F
I
I
C
C
A
A
T
T
I
I
O
O
N
N
S
S
-1 for 10ppm
*
-7 for 15ppm
32.768kHz
Frequency Range
32.768kHz
30kHz to 200kHz
Operating Temperature -10C to +60C (See Options)
Storage Temperature
-40C to +85C
Turnover Temperature
25C to 5C
Frequency Tolerance @ 25C 20ppm max. 20ppm max.(32.768kHz)
& 30ppm max.(others)
Frequency Stability over Temp
-0.034 0.006ppm / (25-T)
2
**
Equivalent Series Resistance (ESR)
30kW max. 35kW max.(32.768kHz)
35kW ~ 50KW (others)
Shunt Capacitance C0
1.6pF typical
0.8 to 1.7pF typical
Load Capacitance CL (See Note )
12.5pF typical (See Options)
Motion Capacitance C1
0.0035pF typ.
0.001 ~ 0.004pF typ.
Drive Level
1W max.
Quality Factor Q
90,000 typical
70,000 typical
Capacitance Ratio C0 / C1
460 typical
425 - 800 typical
Insulation Resistance
500 MW min. at 100 Vdc 15 V
Aging @ 25
o
C First year 3ppm max. 3ppm (32.768kHz)
5ppm (others)
ORDERING
OPTIONS
8.3 x 03.2 mm or 6.2 x 02.1 mm
29 Journey Aliso Viejo, CA 92656 USA
(949) 448-7070 F
AX
: (949) 448-8484
E-
MAIL
:
abinfo
@
abracon.com
I
NTERNET
A
DDRESS
:
www.abracon.com
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: Left blank if standard
All specifications and markings subject to change without notice
ABRACON
C O R P O R A T I O N
33
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