ECX-306 Low Profile Long term stability Industry standard footprint Extended Temp. Range SMD TUNING FORK CRYSTAL 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 Frequency FO Frequency Tolerance @ +25°C Load Capacitance Specify in P/N Drive Level DL 1.0 µW Equivalent Series Resistance R1 50K Ω MIN TYP UNITS MAX 32.768 KHz ± 20 ppm 12.5 pF Turnover Temperature +20 +25 +30 °C Temperature Coefficient -0.028 -0.034 -0.040 ppm/°C² Shunt Capacitance Co 1.35 First Year Aging +25°C ±3°C Operating Temperature Topr Storage Temperature Insulation Resistance pF ±3 ppm -40 +85 °C Tstg -55 +125 °C @ 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 .327 = 32.768 KHz 1105 South Ridgeview Road 12.5 = 12.5 pF 6 = 6 pF Olathe, KS 66062 Package Type -17 = ECX-306 Phone: 913.782.7787 - Tolerance - Blank (Std) = ±20 ppm C= ±10 ppm Fax: 913.782.6991 Packaging -TR = Tape & Reel 3K/Reel www.ecsxtal.com