ECX-12RR 32.768 KHz SMD Tuning Fork Crystal The ultra-miniature ECX-12RR is a very compact SMD Tuning Low ESR Fork Crystal. The 2.0 x 1.2 x 0.6 mm ceramic package with reduced ESR is ideal for IoT and Wearale technology. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-12RR SMD CRYSTAL PARAMETERS CONDITIONS ECX-12RR 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 0.1 0.5 W Equivalent Series Resistance R1 35K 50K Turnover Temperature +20 +25 +30 C Low ESR 50K Ohms Max. Temperature Coefficient -0.030 -0.040 ppm/C 2.0 x 1.2 mm Footprint Shunt Capacitance Co 1.7 2.0 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 -40 +85 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-.327-12.5-12RR-TR ECS FREQUENCY ABBREVIATION LOAD CAPACITANCE PACKAGE PACKAGING ECS .327 = 32.768 KHz -12RR = ECX-12RR 12.5 = 12.5 pF TR = Tape 9 = 9 pF & Reel 6 = 6 pF 3K/Reel Rev.2018 th 15351 West 109 Street Lenexa, KS 66219 Phone: 913.782.7787 Fax: 913.782.6991 www.ecsxtal.com ECX-12RR 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