ECX-31B SMD CRYSTAL The miniature ECX-31B is the most cost effective SMD Tuning Fork Crystal today. The 3.2 x 1.5 x 0.9 mm ceramic package is Request a Sample ideal high density circuit boards. Offerings in extended temperature and frequency tolerance as low at 10 ppm. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-31B SMD CRYSTAL PARAMETERS CONDITIONS ECX-31B UNITS MIN TYP MAX Frequency 32.768 KHz Frequency Tolerance +25C 20 * ppm Temperature Coefficient -0.028 -0.034 -0.040 ppm/C Shunt Capacitance Co 1.05 pF Load Capacitance Specify in P/N 12.5 pF Drive Level DL 0.1 1.0 W Low Profile Equivalent Series Resistance R1 70K 3.2 x 1.5 mm Footprint Insulation Resistance 100V DC 500M Extended Temp. Range RoHS Compliant Turnover Temperature +20 +25 +30 C Low Power RTC Applications Operating Temperature Topr -40 +85 C such as STM32 AN2867 Storage Temperature Tstg -55 +125 C Aging (First Year) +25C 3C 3 ppm DIMENSIONS (mm) PAD CONNECTIONS 1 In/Out 2 Out/In Figure 1) Top, Side, and Bottom views Figure 2) Suggested Land Pattern PART NUMBERING GUIDE: Example ECS-.327-12.5-34B-TR ECS - FREQUENCY ABBREVIATION LOAD PACKAGE CUSTOM OPTIONS PACKAGING Tolerance CAPACITANCE Blank = 20 ppm 12.5 = 12.5 pF ECS .327 = 32.768 KHz TR = Tape -34B = ECX-31B * C = 10 ppm 9 = 9 pF & Reel 7 = 7 pF 3K/Reel 6 = 6 pF *Contact E CS for availability Rev.2019 th 15351 West 109 Street Lenexa, KS 66219 Phone: 913.782.7787 Fax: 913.782.6991 www.ecsxtal.com ECX-31B SMD CRYSTAL POCKET TAPE DIMENSIONS (mm) SOLDER PROFILE Peak solder Temp +260C Max 10 sec Max. 2 Cycles Max. MSL 1, Lead Finish Au Figure 1) Suggested Reflow Profile th 15351 West 109 Street Lenexa, KS 66219 Phone: 913.782.7787 Fax: 913.782.6991 www.ecsxtal.com