LOW FREQUENCY, 32.768kHz CYLINDRICAL TYPE TUNING FORK CRYSTALS AB38T and AB26T 8.3 x 03.2 mm or 6.2 x 02.1 mm FEATURES: • Watch frequency. • Frequency range from 30kHz to 200kHz. • Excellent heat resistance. APPLICATIONS: • Real time clock. • Measuring instruments. • Clock source for communication or A / V equipment. STANDARD SPECIFICATIONS STANDARD SPECIFICAB38T ATIONS PARAMETERS AB26T 32.768kHz 30kHz to 200kHz -10°C to +60°C (See Options) -40°C to +85°C 25°C to ±5°C ±20ppm max. ±20ppm max.(32.768kHz) & ±30ppm max.(others) -0.034 ±0.006ppm / (25-T)2 ** 30kW max. 35kW max.(32.768kHz) 35kW ~ 50KW (others) 1.6pF typical 0.8 to 1.7pF typical 12.5pF typical (See Options) 0.0035pF typ. 0.001 ~ 0.004pF typ. 1µW max. 90,000 typical 70,000 typical 460 typical 425 - 800 typical 500 MW min. at 100 Vdc ±15 V ±3ppm max. ±3ppm (32.768kHz) ±5ppm (others) 32.768kHz 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 ) Motion Capacitance C1 Drive Level Quality Factor Q Capacitance Ratio C0 / C1 Insulation Resistance o Aging @ 25 C First year AB38T Dimensions: Inches (mm) AB26T Note : 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 = -71ppm. Environmental, and mechanical specifications, see appendix C. Group 3. Marking, see appendix G. Recommended handling, see appendix F. Application notes, see appendix A. TYPICAL FREQUENCY -VS- TEMPERATURE CURVE ORDERING OPTIONS -10° ABXXT - Frequency - CL - Temperature - Tolerance Load cap. in pF or -S for Series XX.XXXX kHz 38 or 26 ABRACON IS ISO 9001 / QS 9000 CERTIFIED -E for 0°C to + 70°C -B for -20°C to + 70°C -C for -30°C to + 70°C -N for -30°C to + 85°C -D for -40°C to + 85°C 0° 25° 60° TEMP -1 for ± 10ppm* -7 for ± 15ppm * Please call for availability. -50° 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 • INTERNET ADDRESS: www.abracon.com C O R P O R AT I O N ® 33