ECX-306 (cid:1) Low Profile (cid:1) Long term stability (cid:1) Industry standard footprint SMD TUNING FORK CRYSTAL (cid:1) Extended Temp. Range The ECX-306 is a compact SMD Tuning Fork Crystal. The 3.8 x 8.0 x 2.5 mm package is ideal for today's SMD manufacturing environment. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-306 PARAMETERS CONDITIONS UNITS MIN TYP MAX Frequency FO 32.768 KHz Frequency Tolerance @ +25°C ± 20 ppm Load Capacitance Specify in P/N 12.5 pF Drive Level DL 1.0 µW Equivalent Series Resistance R1 50K Ω Turnover Temperature +20 ++2255 +30 °C Temperature Coefficient -0.028 -0.034 -0.040 ppm/°C² Shunt Capacitance Co 1.35 pF First Year Aging +25°C ±3°C ± 3 ppm Operating Temperature Topr -40 +85 °C Storage Temperature Tstg -55 +125 °C Insulation Resistance @ 100V DC 500M Ω TOP, BOTTOM, SIDE VIEWS & LAND PATTERN PART NUMBERING GUIDE: Example ECS-.327-12.5-17-TR ECS - Frequency Abbreviation - Load Capacitance - Package Type - Tolerance - Packaging .327 = 32.768 KHz 12.5 = 12.5 pF -17 = ECX-306 Blank (Std) = ±20 ppm -TR = Tape & Reel 6 = 6 pF C= ±10 ppm 3K/Reel 1105 South Ridgeview Road (cid:1) Olathe, KS 66062 (cid:1) Phone: 913.782.7787 (cid:1) Fax: 913.782.6991 (cid:1) www.ecsxtal.com