HC-49USX QUARTZ CRYSTAL The HC-49USX is the low profile resistance weld type Thru Hole quartz crystal. Request a Sample OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS HC-49USX QUARTZ CRYSTAL PARAMETERS CONDITIONS HC-49USX UNITS MIN TYP MAX Frequency Fo 3.570 70.000 MHz Frequency Tolerance* @ +25°C ± 30 ppm Frequency Stability* -10 ~ +70°C ± 50 ppm Shunt Capacitance Co 7 pF Load Capacitance Specify in P/N 10 20 Series pF Drive Level DL 500 μW  Cost Effective Operating Temperature* Topr -10 +70 °C  Low Profile  Pb Free/RoHS Compliant Storage Temperature Tstg -55 +125 °C  MSL 1 Aging (First Year) @ +25°C ±3°C ±5 ppm DIMENSIONS (mm) Frequency (MHz) ESR Ω Max. Mode of Osc. 3.570 ~ 3.999 200 Fundamental 4.000 ~ 4.999 150 Fundamental 5.000 ~ 5.999 120 Fundamental 6.000 ~ 6.999 100 Fundamental 7.000 ~ 8.999 80 Fundamental 9.000 ~ 12.999 60 Fundamental 13.000 ~ 19.999 40 Fundamental 20.000 ~ 30.000 30 Fundamental 27.000 ~ 70.000 100 3rd Overtone Figure 2) HC-49USX (-4X-3IL) 3rd In Line Lead Base, Side, and End View Figure 1) Side and Bottom PART NUMBERING GUIDE: Example ECS-200-20-4X ECS - FREQUENCY ABBREVIATION LOAD PACKAGE AVAILABLE OPTIONS PACKAGING CAPACITANCE Tolerance Stability Temp Range ECS 200 = 20.000 MHz 20 = 20 pF 4X = 3.5 mm Blank = Std Blank= Std Blank= Std Bulk See P/N Guide S = Series 4LX = 2.5 mm A = ± 25 ppm D= ±100 ppm L = -10 ~ +70°C 4X-3IL = 3rd J = ± 20 ppm E = ± 50 ppm M = -20 ~ +70°C R = ± 15 ppm G = ± 30 ppm Y = -30 ~ +85°C In Line Lead Base C = ± 10 ppm H = ± 25 ppm N = -40 ~ +85°C * Specify available options in P/N. T = ± 20 ppm † P = -40 ~ +105°C W = ±15 ppm † S = -40 ~ +125°C † Contact ECS fo r 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

HC-49USX QUARTZ CRYSTAL DEVELOPED FREQUENCIES Frequency Frequency Abbreviation Abbreviation (MHZ) (MHZ) 035 3.579545 120 12.000 036 3.6864 122.8 12.288 040 4.000 129.6 12.960 040.3 4.032 135 13.5168 041 4.096 143 14.31818 042 4.194034 147.4 14.7456 044 4.433618 150 15.000 049 4.9152 153 15.360 050 5.000 160 16.000 051 5.0688 163.8 16.384 060 6.000 177.3 17.734475 SOLDER PROFILE 061 6.144 180 18.000 Peak solder Temp +260°C Max 10 sec Max. 065 6.500 184 18.432 2 Cycles Max. 073 7.3728 196.6 19.6608 MSL 1, Lead Finish Sn/Cu Matte 076.8 7.680 200 20.000 080 8.000 220 22.000 085 8.500 221 22.1184 090 9.000 240 24.000 092.1 9.216 245.7 24.576 098.3 9.8304 250 25.000 100 10.000 270 27.000 102.4 10.240 282.24 28.224 107.3 10.738635 286.3 28.63636 110 11.000 320 32.000 110.5 11.0592 400 40.000 115.2 11.520 480 48.000 119.8 11.98135 500 50.000 Figure 1) Suggested Solder Profile 15351 West 109th Street | Lenexa, KS 66219 | Phone: 913.782.7787 | Fax: 913.782.6991 | www.ecsxtal.com