LOW FREQUENCY, CYLINDRICAL TYPE
WATCH CRYSTALS 32.768 kHz
AB38T and AB26T
FEATURES:
• Watch Frequency.
• Frequency Range from 30 kHz to 200 kHz.
• Formed Leads, Low Profile (-M).
• Excellent Heat Resistance.
APPLICATIONS:
• Real Time Clock.
• Measuring Instruments.
• Clock Source for Communication or A / V Equipment.
STANDARD SPECIFICATIONS
PARAMETERS
Frequency Range
Operating Temperature
Storage Temperature
Turnover Temperature
Frequency Tolerance @ 25°C
Frequency Stability over Temp
Equivalent Series Resistance (ESR)
Shunt Capacitance C0
Load Capacitance CL
(See Note 1)
Motion Capacitance C1
Drive Level
Quality Factor Q
Capacitance Ratio C0 / C1
Insulation Resistance:
Aging @ 25°C First year
AB38T
32.768 kHz
AB26T
32.768 kHz
30 kHz to 200 kHz
-10°C to + 60°C
(See Options)
-40°C to + 85°C
25°C to ± 5°C
± 20 ppm max.
30 k
Ω
max.
1.6 pF typical
0.0035 pF typical
90,000 typical
460 typical
±3 ppm max.
(32.768 KHz) & ± 30ppm(other)
35 k
Ω
max.(32.768KHz)(other)
35 k
Ω
max. - 50KHz)(other)
0.8 to 1.7 pF typical
1 - 4 pF typical
1
µ
W max.
70,000 typical
425 - 800 typical
(32.768 KHz) & ± 5ppm (other)
12.5 pF typical
(See Options)
-0.034± 0.006 ppm / (25-T)
2
AB38T
Dimensions: Inches (mm)
500 M
Ω
min. at 100 Vdc ±15 V
Please see environmental, and mechanical specifications on page 68, Group 3.
Marking, see page 77.
Note 1:
Custom C
L
upon request at 6 pF. Check with us for other C
L
value.
(*) Example: Stability at -20°C is: -0.035 x [25-(-20)]
2
= -71 ppm.
AB26T
TYPICAL FREQUENCY
-
VS
-
ORDERING OPTIONS
ABXXT - Frequency - CL - Temperature - Tolerance - Value Added - Packaging
38 or 26
Load cap. in pF
or
- S for Series
-E for 0°C
-B for -20°C
-C for -30°C
-N for -30°C
-D for -40°C
to + 70°C
to + 70°C
to + 70°C
to + 85°C
to + 85°C
- T (Tape
&
Reel)
- TY (Tray Packing)
-M = (SMT Formed Leads)
found on page 72
-1 for ± 10 ppm (
*
) ( ) Please call for availability.
*
-7 for ± 15 ppm
-50°
0°
TEMPERATURE CURVE
-10°
25°
60°
TEMP
XX.XXXX kHz
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: Left blank if standard
•
All specifications and markings subject to change without notice
ABRACON
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
®
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