Not suggested for new design – will not sample. Suggested alternate is the CSM-4AX ECX-3SX The wide frequency range SMD quartz crystal is an excellent choice for surface SMD CRYSTAL mount applications. The ruggedized moulded package is made from the same thermoplastic that is an industry standard for integrated circuits. OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS ECX-3SX SMD CRYSTAL PARAMETERS CONDITIONS ECX-3SX UNITS MIN TYP MAX Frequency 3.570 70.000 MHz Frequency Tolerance* @ +25°C ± 30 ppm Frequency Stability* -10 ~ +70°C ± 50 ppm Shunt Capacitance Co 7.0 pF Load Capacitance Specify in P/N 20 pF Drive Level DL 100 μW • Low Profile Operating Temperature* Topr -10 +70 °C • Industry Standard Footprint • Extended Temp. Range Option Storage Temperature Tstg -40 +85 °C • RoHS Compliant Aging (First Year) @ +25°C ±3°C ±5 ppm DIMENSIONS (mm) Frequency (MHz) ESR Ω Max. Mode of Osc. 3.57 ~ 3.999 200 Fundamental 4.000 ~ 5.999 150 Fundamental 6.000 ~ 9.999 100 Fundamental 10.000 ~ 35.999 50 Fundamental 27.000 ~ 70.000 100 3rd Overtone Figure 1) Top, Side, and End Figure 2) Suggested land pattern PART NUMBERING GUIDE: Example ECS-160-20-7SX-TR ECS - FREQUENCY ABBREVIATION LOAD PACKAGE AVAILABLE OPTIONS PACKAGING CAPACITANCE Tolerance Stability Temp Range ECS 160 = 16.000 MHz 20 = 20 pF 7SX = Blank = Std Blank= Std Blank= Std TR = See P/N Guide S = Series ECX-3SX A = ± 25 ppm D= ±100 ppm L = -10 ~ +70°C Tape J = ± 20 ppm E = ± 50 ppm M = -20 ~ +70°C & Reel R = ± 15 ppm G = ± 30 ppm Y = -30 ~ +85°C C = ± 10 ppm H = ± 25 ppm N = -40 ~ +85°C 1K/Reel * Specify available options in P/N. T = ± 20 ppm † P = -40 ~ +105°C W = ±15 ppm † S = -40 ~ +125°C † Contact ECS for availability over extended temp range. K = ± 10 ppm † U = -55 ~ +125°C Rev.2017 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com

ECX-3SX SMD CRYSTAL POCKET TAPE DIMENSIONS (mm) SOLDER PROFILE Peak solder Temp +260°C Max 10 sec Max. 2 Cycles Max. MSL 1, Lead Finish Sn/Cu Figure 1) Suggested Reflow Profile 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com