ECX-306X SMD CRYSTAL The ECX-306X is a compact SMD Tuning Fork Crystal. The 3.8 x 8.0 x 2.5 mm package is ideal for todays SMD Request a Sample manufacturing environment. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-306X SMD CRYSTAL PARAMETERS CONDITIONS ECX-306X 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 +25 +30 °C  Low Profile Temperature Coefficient -0.028 -0.034 -0.040 ppm/°C2  Long Term Stability  Industry Standard Footprint Shunt Capacitance Co 1.35 pF  Extended Temp. Range Aging (First Year) @ +25°C ±3°C ±3 ppm  RoHS Compliant Operating Temperature Topr -40 +85 °C Storage Temperature Tstg -55 +125 °C Insulation Resistance @ 100V DC 500M Ω DIMENSIONS (mm) Figure 2) Suggested Land Pattern Figure 1) Top, Side, and End views PART NUMBERING GUIDE: Example ECS-.327-12.5-17X-TR ECS - FREQUENCY ABBREVIATION LOAD PACKAGE CUSTOM OPTIONS PACKAGING CAPACITANCE Tolerance ECS .327 = 32.768 KHz 12.5 = 12.5 pF 17X = ECX-306X Blank (Std) = ±20 ppm TR = Tape 6 = 6 pF * C = ± 10 ppm & Reel 3K/Reel *Contact ECS for availability Rev.2016 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com

ECX-306X SMD CRYSTAL POCKET TAPE DIMENSIONS (mm) SOLDER PROFILE Peak solder Temp +260°C Max 10 sec Max. 2 Cycles Max. MSL 1, Lead Finish Sn/Cu Figure 1) Suggested Reflow Profile 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com