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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 (JPY) 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 9MHz 18pF 50ppm -40C +85C ECS-90-18-4XEN ECS 1: ¥98 921In Stock	Mfr. Part # ECS-90-18-4XEN Mouser Part # 520-90-18-4XEN	ECS	Crystals 9MHz 18pF 50ppm -40C +85C Learn More about ECS hc 49usx quartz crystals	Datasheet	921In Stock	¥98 ¥77.1 ¥67.9 ¥67.8 View ¥61 ¥57.3 ¥55.6 ¥53	Min.: 1 Mult.: 1	9 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 HC-49USX, 11.0592MHz, 20pF, +/-30ppm, +/-50ppm, -40C +85 C, RoHS ECS-110.5-20-4X-EN ECS 1: ¥91.4 380In Stock	Mfr. Part # ECS-110.5-20-4X-EN Mouser Part # 520-ECS-110.5-204XEN	ECS	Crystals HC-49USX, 11.0592MHz, 20pF, +/-30ppm, +/-50ppm, -40C +85 C, RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	380In Stock	Cut Tape ¥91.4 ¥71.8 ¥63.3 Reel ¥63.3 ¥61.5 View ¥59.6 ¥56.3 ¥51.8 ¥49.3	Min.: 1 Mult.: 1 : 200	11.0592 MHz	20 pF	30 PPM	50 PPM	11.35 mm x 3.5 mm	- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	5 mm	3.5 mm		Reel, Cut Tape
Crystals 16.000 MHz 12 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS ECS-160-12-4X-GM ECS 1: ¥56.5 438In Stock	Mfr. Part # ECS-160-12-4X-GM Mouser Part # 520-ECS-160-12-4X-GM	ECS	Crystals 16.000 MHz 12 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	438In Stock	¥56.5 ¥45 ¥39.7 ¥38.5 View ¥37.4 ¥33.1 ¥31.4 ¥28.7	Min.: 1 Mult.: 1	16 MHz	12 pF	30 PPM	30 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals 16.000 MHz 18 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS ECS-160-18-4X-EM ECS 1: ¥69.8 666In Stock	Mfr. Part # ECS-160-18-4X-EM Mouser Part # 520-ECS-160-18-4X-EM	ECS	Crystals 16.000 MHz 18 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	666In Stock	¥69.8 ¥54 ¥49 ¥46.8 View ¥44.8 ¥41.5 ¥40.2 ¥36	Min.: 1 Mult.: 1	16 MHz	18 pF	30 PPM	50 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals 16.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS ECS-160-20-4X-EM ECS 1: ¥56.5 171In Stock 1,000Expected 11/2/2026	Mfr. Part # ECS-160-20-4X-EM Mouser Part # 520-ECS-160-20-4X-EM	ECS	Crystals 16.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	171In Stock 1,000Expected 11/2/2026	¥56.5 ¥45 ¥39.7 ¥38.5 View ¥37.4 ¥33.1 ¥31.4 ¥28.6	Min.: 1 Mult.: 1	16 MHz	20 pF	30 PPM	50 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals 20.000 MHz 18 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS ECS-200-18-4X-GM ECS 1: ¥56.5 482In Stock	Mfr. Part # ECS-200-18-4X-GM Mouser Part # 520-ECS-200-18-4X-GM	ECS	Crystals 20.000 MHz 18 pF HC-49USX +/-30/30 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	482In Stock	¥56.5 ¥45 ¥39.7 ¥38.5 View ¥35 ¥33.1 ¥31.4 ¥28.6	Min.: 1 Mult.: 1	20 MHz	18 pF	30 PPM	30 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals 20.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS ECS-200-20-4X-EM ECS 1: ¥56.5 611In Stock	Mfr. Part # ECS-200-20-4X-EM Mouser Part # 520-ECS-200-20-4X-EM	ECS	Crystals 20.000 MHz 20 pF HC-49USX +/-30/50 ppm -20 - +70C RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	611In Stock	¥56.5 ¥45 ¥39.7 ¥38.5 View ¥37.4 ¥33.1 ¥31.4 ¥28.7	Min.: 1 Mult.: 1	20 MHz	20 pF	30 PPM	50 PPM	11.35 mm x 4.65 mm	- 20 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm		Bulk
Crystals HC-49USX, 4MHz, 18pF, +/-30ppm, +/-50ppm, -10C +70 C, RoHS ECS-40-18-4X ECS 1: ¥106.3 220In Stock	Mfr. Part # ECS-40-18-4X Mouser Part # 520-ECS-40-18-4X	ECS	Crystals HC-49USX, 4MHz, 18pF, +/-30ppm, +/-50ppm, -10C +70 C, RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	220In Stock	Cut Tape ¥106.3 ¥83.4 ¥74.4 Reel ¥74.4 ¥71.9 View ¥69.4 ¥60.8 ¥58 ¥54.8	Min.: 1 Mult.: 1 : 200	4 MHz	18 pF	30 PPM	50 PPM	11.35 mm x 3.5 mm	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	3.5 mm	3.5 mm		Reel, Cut Tape
Crystals CRYSTAL 8MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-80-18-4X-CKM ECS 1: ¥76.4 1,538In Stock 2,400Expected 11/2/2026	Mfr. Part # ECS-80-18-4X-CKM Mouser Part # 520-ECS-80-18-4X-CKM	ECS	Crystals CRYSTAL 8MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	1,538In Stock 2,400Expected 11/2/2026	¥76.4 ¥61.1 ¥54.3 ¥53.7 View ¥52.3 ¥48.8 ¥46.7 ¥45.8	Min.: 1 Mult.: 1	8 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	80 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals CRYSTAL 10MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-100-18-4X-CKM ECS 1: ¥81.4 851In Stock	Mfr. Part # ECS-100-18-4X-CKM Mouser Part # 520-ECS100-18-4X-CKM	ECS	Crystals CRYSTAL 10MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	851In Stock	¥81.4 ¥64.1 ¥59.3 ¥59.1 View ¥50.5 ¥48.3 ¥45.2 ¥41.7	Min.: 1 Mult.: 1	10 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals CRYSTAL 12MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-120-18-4X-CKM ECS 1: ¥79.7 860In Stock	Mfr. Part # ECS-120-18-4X-CKM Mouser Part # 520-ECS120-18-4X-CKM	ECS	Crystals CRYSTAL 12MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	860In Stock	¥79.7 ¥63.6 ¥55 ¥53 View ¥52.8 ¥49.8 ¥48.2 ¥47.3	Min.: 1 Mult.: 1	12 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals CRYSTAL 20MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-200-18-4X-CKM ECS 1: ¥79.7 479In Stock	Mfr. Part # ECS-200-18-4X-CKM Mouser Part # 520-ECS200-18-4X-CKM	ECS	Crystals CRYSTAL 20MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	479In Stock	¥79.7 ¥63.6 ¥56 ¥54.5 View ¥52.8 ¥49.8 ¥48.5 ¥46.8	Min.: 1 Mult.: 1	20 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals CRYSTAL 25MHZ 18pF 10ppm 10ppm -20 C 70 C ECS-250-18-4X-CKM ECS 1: ¥79.7 432In Stock 1,000Expected 10/27/2026	Mfr. Part # ECS-250-18-4X-CKM Mouser Part # 520-ECS250-18-4X-CKM	ECS	Crystals CRYSTAL 25MHZ 18pF 10ppm 10ppm -20 C 70 C Learn More about ECS hc 49usx quartz crystals	Datasheet	432In Stock 1,000Expected 10/27/2026	¥79.7 ¥63.6 ¥55.5 ¥53.5 View ¥51.8 ¥47.2 ¥43.7 ¥40.4	Min.: 1 Mult.: 1	25 MHz	18 pF	10 PPM	10 PPM	HC-49/USX	- 20 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	5 mm	3.5 mm	HC-49USX	Bulk
Crystals 10MHz 18pF ECS-100-18-4X ECS 1: ¥101.3 1,643In Stock 2,400Expected 2/1/2027	Mfr. Part # ECS-100-18-4X Mouser Part # 520-HCU1000-18X	ECS	Crystals 10MHz 18pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,643In Stock 2,400Expected 2/1/2027	¥101.3 ¥80.2 ¥70.6 ¥68.8 View ¥66.6 ¥61.1 ¥59 ¥56	Min.: 1 Mult.: 1	10 MHz	18 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 10MHz SERIES ECS-100-S-4X ECS 1: ¥99.7 546In Stock 800Expected 10/26/2026	Mfr. Part # ECS-100-S-4X Mouser Part # 520-HCU1000-SX	ECS	Crystals 10MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	546In Stock 800Expected 10/26/2026	¥99.7 ¥78.2 ¥70.6 ¥63 View ¥59.6 ¥57.1 ¥54.8	Min.: 1 Mult.: 1	10 MHz	Series	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 10.738635MHz SERIES ECS-107.3-S-4X ECS 1: ¥96.3 928In Stock	Mfr. Part # ECS-107.3-S-4X Mouser Part # 520-HCU1073-SX	ECS	Crystals 10.738635MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	928In Stock	¥96.3 ¥76.7 ¥70.6 ¥68.8 View ¥62.1 ¥58.8 ¥56.3 ¥53.7	Min.: 1 Mult.: 1	10.738635 MHz	Series	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 11MHz SERIES ECS-110-S-4X ECS 1: ¥101.3 439In Stock	Mfr. Part # ECS-110-S-4X Mouser Part # 520-HCU1100-SX	ECS	Crystals 11MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	439In Stock	¥101.3 ¥80.2 ¥70.6 ¥66.9 View ¥62.8 ¥59 ¥57.3 ¥54.8	Min.: 1 Mult.: 1	11 MHz	Series	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 11.0592MHz 20pF ECS-110.5-20-4X ECS 1: ¥94.7 1,140In Stock	Mfr. Part # ECS-110.5-20-4X Mouser Part # 520-HCU1105-20X	ECS	Crystals 11.0592MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,140In Stock	¥94.7 ¥75.6 ¥67.9 ¥66.1 View ¥64.1 ¥60.3 ¥58.3 ¥55.5	Min.: 1 Mult.: 1	11.0592 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 11.0592MHz 32pF ECS-110.5-32-4X ECS 1: ¥96.3 1,007In Stock	Mfr. Part # ECS-110.5-32-4X Mouser Part # 520-HCU1105-32X	ECS	Crystals 11.0592MHz 32pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,007In Stock	¥96.3 ¥76.7 ¥70.6 ¥68.8 View ¥68.3 ¥59.3 ¥56.5 ¥53.7	Min.: 1 Mult.: 1	11.0592 MHz	32 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 11.0592MHz SERIES ECS-110.5-S-4X ECS 1: ¥101.3 1,166In Stock	Mfr. Part # ECS-110.5-S-4X Mouser Part # 520-HCU1105-SX	ECS	Crystals 11.0592MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	1,166In Stock	¥101.3 ¥79.6 ¥64.4 ¥61.1 View ¥60.8 ¥59.1 ¥57.8 ¥54.8	Min.: 1 Mult.: 1	11.0592 MHz	Series	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 12MHz 20pF EX/TEMP HC-49US ECS-120-20-4XDN ECS 1: ¥117.9 388In Stock	Mfr. Part # ECS-120-20-4XDN Mouser Part # 520-HCU1200-20DNX	ECS	Crystals 12MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	388In Stock	¥117.9 ¥92.5 ¥81.6 ¥79.4 View ¥71.9 ¥68.9 ¥63.3 ¥60.5	Min.: 1 Mult.: 1	12 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	60 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12MHz 32pF ECS-120-32-4X ECS 1: ¥99.7 1,962In Stock	Mfr. Part # ECS-120-32-4X Mouser Part # 520-HCU1200-32X	ECS	Crystals 12MHz 32pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,962In Stock	¥99.7 ¥79.1 ¥69.6 ¥67.8 View ¥65.8 ¥58.8 ¥56 ¥53.2	Min.: 1 Mult.: 1	12 MHz	32 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 12MHz SERIES ECS-120-S-4X ECS 1: ¥99.7 520In Stock	Mfr. Part # ECS-120-S-4X Mouser Part # 520-HCU1200-SX	ECS	Crystals 12MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	520In Stock	¥99.7 ¥76.7 ¥70.6 ¥66.6 View ¥62.1 ¥60.3 ¥58	Min.: 1 Mult.: 1	12 MHz	Series	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 12.288MHz Series -10C +70C ECS-122.8-20-4X ECS 1: ¥101.3 436In Stock	Mfr. Part # ECS-122.8-20-4X Mouser Part # 520-HCU122.8-20-4X	ECS	Crystals 12.288MHz Series -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	436In Stock	¥101.3 ¥82.2 ¥74.4 ¥66.9 View ¥62.3 ¥59 ¥56.3 ¥53.7	Min.: 1 Mult.: 1	12.288 MHz	20 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	60 Ohms	500 uW	11.35 mm	3.8 mm	3.5 mm	HCS-49USX	Bulk
Crystals 12.288MHz SERIES ECS-122.8-S-4X ECS 1: ¥101.3 227In Stock	Mfr. Part # ECS-122.8-S-4X Mouser Part # 520-HCU1228-SX	ECS	Crystals 12.288MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	227In Stock	¥101.3 ¥80.2 ¥70.6 ¥68.8 View ¥62.3 ¥59 ¥56.3 ¥53.7	Min.: 1 Mult.: 1	12.288 MHz	Series	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

3.579545 MHz
3.6864 MHz
4 MHz
4.032 MHz
4.096 MHz
4.194304 MHz
4.433618 MHz
4.9152 MHz
5 MHz
5.0688 MHz
6 MHz
6.144 MHz
6.5 MHz
7.3728 MHz
7.68 MHz
8 MHz
8.5 MHz
9 MHz
9.216 MHz
9.545 MHz