ECX-12R 32.768 KHz SMD Tuning Fork Crystal The ultra-miniature ECX-12R is a very compact SMD Tuning Fork Low ESR Crystal. The 2.0 x 1.2 x 0.6 mm ceramic package with reduced ESR is ideal for IOT and Wearable technology. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-12R SMD CRYSTAL PARAMETERS CONDITIONS ECX-12R UNITS MIN TYP MAX Frequency 32.768 KHz Frequency Tolerance +25C 20 * ppm Load Capacitance Specify in P/N 12.5 pF Drive Level DL 1.0 W Equivalent Series Resistance R1 70K Turnover Temperature +20 +25 +30 C Low ESR 70K Ohms Max. Temperature Coefficient -0.03 -0.033 -0.036 ppm/C 2.0 x 1.2 mm Footprint Shunt Capacitance Co 1.3 pF Low Power RTC Applications such as STM32 AN2867 Aging (First Year) +25C 3C 3 ppm RoHS Compliant Operating Temperature Topr -40 +85 C Applications: Metering, Storage Temperature Tstg -55 +125 C Automotive, Industrial, IOT and Wearables. 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-.327-12.5-12R-TR ECS - FREQUENCY ABBREVIATION LOAD PACKAGE CUSTOM OPTIONS PACKAGING Tolerance CAPACITANCE 12.5 = 12.5 pF Blank = 20 ppm ECS .327 = 32.768 KHz TR = Tape -12R = ECX-12R * C = 10 ppm 9 = 9 pF & Reel 7 = 7 pF 3K/Reel 6 = 6 pF *Contact ECS for availability Rev.2018 th 15351 West 109 Street Lenexa, KS 66219 Phone: 913.782.7787 Fax: 913.782.6991 www.ecsxtal.com ECX-12R 32.768 KHz SMD Tuning Fork Crystal Low ESR 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