ECX-16 32.768 KHz SMD Tuning Fork Crystal The miniature ECX-16 is a very compact SMD Tuning Fork Request a Sample Crystal perfect for LoRa Wan technology. Low ESR part recommended by STMicroelectronics for the STM32 Microcontrollers. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS PARAMETERS CONDITIONS ECX-16 UNITS ECX -16 SMD CRYSTAL MIN TYP MAX Frequency 32.768 KHz Frequency Tolerance +25C 20 * ppm Load Capacitance Specify in P/N 12.5 pF Drive Level DL 0.5 W Equivalent Series Resistance R1 90K Motional Capacitance 6.5 fF Turnover Temperature +20 +25 +30 C Low Power RTC Applications such as STM32 AN2867 Temperature Coefficient -0.02 -0.03 -0.040 ppm/C 1.6 x 1.0 mm Footprint Shunt Capacitance Co 1.3 pF Extended Temp. Range Aging (First Year) +25C 3C 3 ppm RoHS Compliant Applications: Automotive, Operating Temperature Topr -40 +85 C COTS, Industrial, IOT Storage Temperature Tstg -55 +125 C DIMENSIONS (mm) PAD CONNECTIONS 1 In/Out 2 Out/In Figure 2) Suggested Land Pattern Figure 1) Top, Side, and Bottom views PART NUMBERING GUIDE: Example ECS-.327-12.5-16-TR ECS - FREQUENCY ABBREVIATION LOAD PACKAGE CUSTOM OPTIONS PACKAGING Tolerance ( +25C) Max. CAPACITANCE Blank = 20 ppm .327 = 32.768 KHz 12.5 = 12.5 pF ECS TR = 5K/Reel -16 = ECX-16 * C = 10 ppm 9 = 9 pF TR3 = 3K/Reel * 7 = 7 Max. 7 = 7 pF 6 = 6 pF 5 = 5 pF *Contact ECS for availability Rev.2021 th 15351 West 109 Street Lenexa, KS 66219 Phone: 913.782.7787 Fax: 913.782.6991 www.ecsxtal.com ECX-16 32.768 KHz SMD Tuning Fork 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