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 communications and measuring equipment. Request a Sample OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-306X SMD CRYSTAL PARAMETERS CONDITIONS ECX-306X MIN Frequency Fo Frequency Tolerance Load Capacitance * * * * * * MAX 32.768 KHz 20 * @ +25C Specify in P/N ppm 12.5 pF Drive Level DL 1.0 W Equivalent Series Resistance R1 50K Turnover Temperature Low Profile Long Term Stability Industry Standard Footprint Extended Temp. Range RoHS Compliant Low Power RTC Applications such as STM32 AN2867 TYP UNITS Temperature Coefficient Shunt Capacitance Co Aging (First Year) @ +25C 3C +20 +25 +30 C -0.028 -0.034 -0.040 ppm/C2 1.35 pF 3 ppm Operating Temperature Topr -40 +85 C Storage Temperature Tstg -55 +125 C @ 100V DC 500M Insulation Resistance 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 ECS .327 = 32.768 KHz *Contact ECS for availability LOAD CAPACITANCE PACKAGE 12.5 = 12.5 pF 9 = 9 pF 7 = 7 pF 6 = 6 pF 17X = ECX-306X CUSTOM OPTIONS PACKAGING Tolerance Blank (Std) = 20 ppm * C = 10 ppm TR = Tape & Reel 3K/Reel Rev.2020 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 +260C Max 10 sec Max. 2 Cycles Max. MSL 1, Lead Finish Sn/Ag Figure 1) Suggested Reflow Profile 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com