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HC-49USX Low-Profile Quartz Crystals

ECS HC-49USX Low-Profile Quartz Crystals are cost-effective, lead-free, and RoHS-compliant crystals with a maximum height of 3.5mm. The HC-49USX thru-hole mount, resistance weld-type crystals have an operating temperature range of -10°C to +70°C. The HC-49USX-DN series features an industrial temperature range of -40°C to +85°C. ECS HC-49USX Low-Profile Quartz Crystals feature a frequency range between 3.57MHz and 70MHz.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (TWD) Filter the results in the table by unit price based on your quantity.	Qty.	Frequency	Load Capacitance	Tolerance	Frequency Stability	Package / Case	Minimum Operating Temperature	Maximum Operating Temperature	Termination Style	ESR	Drive Level	Length	Width	Height	Series	Packaging
Crystals CRYSTAL 16MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-160-18-4X-CKM ECS 1: NT$13.98 9,529In Stock	Mfr. Part # ECS-160-18-4X-CKM Mouser Part # 520-ECS160-18-4X-CKM	ECS	Crystals CRYSTAL 16MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	9,529In Stock	NT$13.98 NT$11.54 NT$10.54 NT$10.18 View NT$9.93 NT$9.43 NT$9.21 NT$8.96	Min.: 1 Mult.: 1	16 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals HC-49USX, 20MHz, 18pF, HC-49USX, +/-30ppm, +/-50ppm, -10C +70 C, RoHS ECS-200-18-4X ECS 1: NT$21.15 5,698In Stock	Mfr. Part # ECS-200-18-4X Mouser Part # 520-ECS-200-18-4X	ECS	Crystals HC-49USX, 20MHz, 18pF, HC-49USX, +/-30ppm, +/-50ppm, -10C +70 C, RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	5,698In Stock	Cut Tape NT$21.15 NT$16.63 NT$14.66 Reel NT$14.66 NT$13.73 View NT$12.44 NT$11.87 NT$11.54 NT$10.72	Min.: 1 Mult.: 1 : 200	20 MHz	18 pF	30 PPM	50 PPM	11.35 mm x 3.5 mm	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	5 mm	3.5 mm		Reel, Cut Tape
Crystals 12MHz 20pF HC-49US ECS-120-20-4X ECS 1: NT$21.15 4,639In Stock	Mfr. Part # ECS-120-20-4X Mouser Part # 520-HCU1200-20X	ECS	Crystals 12MHz 20pF HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	4,639In Stock	NT$21.15 NT$16.67 NT$14.66 NT$14.16 View NT$12.87 NT$12.66 NT$12.37	Min.: 1 Mult.: 1	12 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 7.3728MHz SERIES ECS-73-S-4X ECS 1: NT$22.59 986In Stock	Mfr. Part # ECS-73-S-4X Mouser Part # 520-HCU737-SX	ECS	Crystals 7.3728MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	986In Stock	NT$22.59 NT$17.75 NT$16.06 NT$15.38 View NT$13.44 NT$12.73 NT$12.15 NT$11.58	Min.: 1 Mult.: 1	7.3728 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	80 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24.00014MHz 18pF 50ppm -40C +85C ECS-240.001-18-4XEN ECS 1: NT$21.51 188In Stock	Mfr. Part # ECS-240.001-18-4XEN Mouser Part # 520-240.001-18-4XEN	ECS	Crystals 24.00014MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	188In Stock	NT$21.51 NT$16.96 NT$15.34 NT$13.62 View NT$12.33 NT$11.33 NT$11.04 NT$10.54	Min.: 1 Mult.: 1	24 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 11.98135MHz Series -10C +70C ECS-119.8-S-4X ECS 1: NT$22.59 208In Stock	Mfr. Part # ECS-119.8-S-4X Mouser Part # 520-HCU119.8-S-4X	ECS	Crystals 11.98135MHz Series -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	208In Stock	NT$22.59 NT$17.75 NT$16.06 NT$14.27 View NT$13.52 NT$12.69 NT$12.30 NT$11.83	Min.: 1 Mult.: 1	11.98135 MHz	20 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	3.7 mm	3.5 mm	HCS-49USX	Bulk
Crystals 15.36MHz 18pF 50ppm -40C +85C ECS-153.6-18-4X-EN ECS 1: NT$21.51 773In Stock	Mfr. Part # ECS-153.6-18-4X-EN Mouser Part # 520-153.6-18-4XEN	ECS	Crystals 15.36MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	773In Stock	NT$21.51 NT$16.96 NT$15.34 NT$14.70 View NT$12.91 NT$12.12 NT$11.79 NT$11.29	Min.: 1 Mult.: 1	15.36 MHz	18 pF	30 PPM	50 PPM		- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12.96MHz 18pF -10C +70C ECS-129.6-18-4X ECS 1: NT$22.59 201In Stock	Mfr. Part # ECS-129.6-18-4X Mouser Part # 520-HCU129.6-18-4X	ECS	Crystals 12.96MHz 18pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	201In Stock	NT$22.59 NT$17.75 NT$16.06 NT$14.27 View NT$13.16 NT$12.48 NT$11.94 NT$11.36	Min.: 1 Mult.: 1	12.96 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 14.31818MHz SERIES ECS-143-S-4X ECS 1: NT$22.59 188In Stock	Mfr. Part # ECS-143-S-4X Mouser Part # 520-HCU1431-SX	ECS	Crystals 14.31818MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	188In Stock	NT$22.59 NT$17.75 NT$16.06 NT$14.27 View NT$13.16 NT$12.48 NT$11.94 NT$11.36	Min.: 1 Mult.: 1	14.31818 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 16.000312MHz 18pF ECS-160.003-18-4X ECS 1: NT$22.59 1,034In Stock	Mfr. Part # ECS-160.003-18-4X Mouser Part # 520-HCU1601-18X	ECS	Crystals 16.000312MHz 18pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,034In Stock	NT$22.59 NT$17.75 NT$16.06 NT$15.38 View NT$14.73 NT$12.48 NT$11.94 NT$11.36	Min.: 1 Mult.: 1	16.000312 MHz	18 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 18.432MHz SERIES ECS-184-S-4X ECS 1: NT$22.59 624In Stock	Mfr. Part # ECS-184-S-4X Mouser Part # 520-HCU1843-SX	ECS	Crystals 18.432MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	624In Stock	NT$22.59 NT$17.75 NT$16.06 NT$15.38 View NT$13.44 NT$12.73 NT$12.15 NT$11.58	Min.: 1 Mult.: 1	18.432 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 3.579MHz 17pF EX/TEMP HC-49US ECS-35-17-4XDN ECS 1: NT$22.23 3,008In Stock	Mfr. Part # ECS-35-17-4XDN Mouser Part # 520-HCU357-17DNX	ECS	Crystals 3.579MHz 17pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	3,008In Stock	NT$22.23 NT$17.64 NT$15.56 NT$15.13 View NT$14.52 NT$13.84 NT$12.58	Min.: 1 Mult.: 1	3.579545 MHz	17 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS ECS-120-20-4X-EM ECS 1: NT$12.19 992In Stock	Mfr. Part # ECS-120-20-4X-EM Mouser Part # 520-ECS-120-20-4X-EM	ECS	Crystals 12.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	992In Stock	NT$12.19 NT$9.72 NT$8.57 NT$8.32 View NT$7.56 NT$7.13 NT$6.78 NT$6.17	Min.: 1 Mult.: 1	12 MHz	20 pF	30 PPM	50 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals 3.579545MHZ 18pF 100 ppm -55C +125C ECS-035-18-4X-DU ECS 1: NT$19.36 986In Stock	Mfr. Part # ECS-035-18-4X-DU Mouser Part # 520-035-18-4X-DU	ECS	Crystals 3.579545MHZ 18pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	986In Stock	NT$19.36 NT$15.31 NT$13.48 NT$13.41 View NT$11.90 NT$11.29 NT$10.97 NT$10.43	Min.: 1 Mult.: 1	3.579545 MHz	18 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4.000MHZ 20pF 100 ppm -55C +125C ECS-040-20-4X-DU ECS 1: NT$19.36 471In Stock	Mfr. Part # ECS-040-20-4X-DU Mouser Part # 520-040-20-4X-DU	ECS	Crystals 4.000MHZ 20pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	471In Stock	NT$19.36 NT$15.31 NT$13.48 NT$13.12 View NT$12.15 NT$11.58 NT$11.33 NT$10.83	Min.: 1 Mult.: 1	4 MHz	20 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 6.000MHZ 20pF 100 ppm -55C +125C ECS-060-20-4X-DU ECS 1: NT$19.36 176In Stock	Mfr. Part # ECS-060-20-4X-DU Mouser Part # 520-060-20-4X-DU	ECS	Crystals 6.000MHZ 20pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	176In Stock	NT$19.36 NT$15.31 NT$13.48 NT$12.51 View NT$11.90 NT$11.29 NT$10.97 NT$10.43	Min.: 1 Mult.: 1	6 MHz	20 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	100 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 8.000MHZ 20pF 100 ppm -55C +125C ECS-080-20-4X-DU ECS 1: NT$19.36 2,674In Stock	Mfr. Part # ECS-080-20-4X-DU Mouser Part # 520-080-20-4X-DU	ECS	Crystals 8.000MHZ 20pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	2,674In Stock	NT$19.36 NT$15.02 NT$12.80 NT$12.33 View NT$11.97 NT$11.72 NT$10.90	Min.: 1 Mult.: 1	8 MHz	20 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	80 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 10.000MHZ 20pF 100 ppm -55C +125C ECS-100-20-4X-DU ECS 1: NT$19.36 942In Stock	Mfr. Part # ECS-100-20-4X-DU Mouser Part # 520-100-20-4X-DU	ECS	Crystals 10.000MHZ 20pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	942In Stock	NT$19.36 NT$15.31 NT$13.48 NT$13.41 View NT$11.72 NT$11.11 NT$10.79 NT$10.29	Min.: 1 Mult.: 1	10 MHz	20 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 10.24MHz 18pF 50ppm -40C +85C ECS-102.4-18-4XEN ECS 1: NT$21.15 896In Stock	Mfr. Part # ECS-102.4-18-4XEN Mouser Part # 520-102.4-18-4XEN	ECS	Crystals 10.24MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	896In Stock	NT$21.15 NT$16.63 NT$15.34 NT$14.70 View NT$13.16 NT$12.37 NT$11.97 NT$11.29	Min.: 1 Mult.: 1	10.24 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 11.0592MHz 18pF 50ppm -40C +85C ECS-110.5-18-4XEN ECS 1: NT$19.36 1,346In Stock 1,200Expected 2/1/2027	Mfr. Part # ECS-110.5-18-4XEN Mouser Part # 520-110.5-18-4XEN	ECS	Crystals 11.0592MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	1,346In Stock 1,200Expected 2/1/2027	NT$19.36 NT$15.31 NT$13.48 NT$13.12 View NT$12.73 NT$11.58 NT$11.11 NT$10.58	Min.: 1 Mult.: 1	11.0592 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12.000MHZ 18pF 100 ppm -55C +125C ECS-120-18-4X-DU ECS 1: NT$20.08 217In Stock 800Expected 2/16/2027	Mfr. Part # ECS-120-18-4X-DU Mouser Part # 520-120-18-4X-DU	ECS	Crystals 12.000MHZ 18pF 100 ppm -55C +125C Learn More about ECS hc 49usx quartz crystals	Datasheet	217In Stock 800Expected 2/16/2027	NT$20.08 NT$15.77 NT$14.09 NT$13.59 View NT$13.12 NT$11.29 NT$10.97 NT$10.50	Min.: 1 Mult.: 1	12 MHz	18 pF	30 PPM	100 PPM	HC-49/USX	- 55 C	+ 125 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12MHz 18pF 50ppm -40C +85C ECS-120-18-4XEN ECS 1: NT$19.72 580In Stock	Mfr. Part # ECS-120-18-4XEN Mouser Part # 520-120-18-4XEN	ECS	Crystals 12MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	580In Stock	NT$19.72 NT$15.77 NT$14.23 NT$13.77 View NT$13.01 NT$12.40 NT$11.29 NT$10.79	Min.: 1 Mult.: 1	12 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12.288MHz 18pF 50ppm -40C +85C ECS-122.8-18-4XEN ECS 1: NT$19.00 100In Stock	Mfr. Part # ECS-122.8-18-4XEN Mouser Part # 520-122.8-18-4XEN	ECS	Crystals 12.288MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	100In Stock	NT$19.00 NT$15.42 NT$15.34 NT$13.16 View NT$12.26 NT$11.26 NT$11.01 NT$10.47	Min.: 1 Mult.: 1	12.288 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 13.5MHz 18pF 50ppm -40C +85C ECS-135-18-4X-EN ECS 1: NT$21.15 899In Stock	Mfr. Part # ECS-135-18-4X-EN Mouser Part # 520-135-18-4XEN	ECS	Crystals 13.5MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	899In Stock	NT$21.15 NT$16.63 NT$14.66 NT$14.27 View NT$13.84 NT$12.58 NT$12.26 NT$11.65	Min.: 1 Mult.: 1	13.5168 MHz	18 pF	30 PPM	50 PPM		- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 14.31818MHz 18pF 50ppm -40C +85C ECS-143-18-4XEN ECS 1: NT$21.87 7In Stock	Mfr. Part # ECS-143-18-4XEN Mouser Part # 520-143-18-4XEN	ECS	Crystals 14.31818MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	7In Stock	NT$21.87 NT$17.28 NT$15.34 NT$14.09 View NT$12.87 NT$11.94 NT$11.44 NT$10.93	Min.: 1 Mult.: 1	14.31818 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk