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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 (SGD) 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 14.31818MHz 20pF -10C +70C ECS-143-20-4X ECS 1: $0.802 528In Stock	Mfr. Part No. ECS-143-20-4X Mouser Part No 520-HCU143-20-4X	ECS	Crystals 14.31818MHz 20pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	528In Stock	$0.802 $0.643 $0.586 $0.583 View $0.568 $0.536 $0.522 $0.449	Min.: 1 Mult.: 1	14.31818 MHz	20 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 14.318180MHz 20pF EX/TEMP HC-49US ECS-143-20-4XDN ECS 1: $1.01 993In Stock	Mfr. Part No. ECS-143-20-4XDN Mouser Part No 520-HCU1431-20DNX	ECS	Crystals 14.318180MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	993In Stock	$1.01 $0.79 $0.737 $0.67 View $0.608 $0.578 $0.552 $0.526	Min.: 1 Mult.: 1	14.31818 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 14.7456MHz 20pF ECS-147.4-20-4X ECS 1: $0.789 614In Stock	Mfr. Part No. ECS-147.4-20-4X Mouser Part No 520-HCU1474-20X	ECS	Crystals 14.7456MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	614In Stock	$0.789 $0.628 $0.573 $0.548 View $0.533 $0.481 $0.46 $0.432	Min.: 1 Mult.: 1	14.7456 MHz	20 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 14.7456MHz SERIES ECS-147.4-S-4X ECS 1: $0.87 52In Stock	Mfr. Part No. ECS-147.4-S-4X Mouser Part No 520-HCU1474-SX	ECS	Crystals 14.7456MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	52In Stock	$0.87 $0.683 $0.609 $0.589 View $0.568 $0.491 $0.469 $0.449	Min.: 1 Mult.: 1	14.7456 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 15MHz SERIES ECS-150-S-4X ECS 1: $0.83 719In Stock	Mfr. Part No. ECS-150-S-4X Mouser Part No 520-HCU1500-SX	ECS	Crystals 15MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	719In Stock	$0.83 $0.657 $0.578 $0.563 View $0.522 $0.491 $0.476 $0.449	Min.: 1 Mult.: 1	15 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 15.36MHz 20pF ECS-153-20-4X ECS 1: $0.83 744In Stock	Mfr. Part No. ECS-153-20-4X Mouser Part No 520-HCU1536-20X	ECS	Crystals 15.36MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	744In Stock	$0.83 $0.657 $0.609 $0.583 View $0.51 $0.483 $0.461 $0.439	Min.: 1 Mult.: 1	15.36 MHz	20 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 16MHz 20pF EX/TEMP HC-49US ECS-160-20-4XDN ECS 1: $0.83 344In Stock	Mfr. Part No. ECS-160-20-4XDN Mouser Part No 520-HCU1600-20DNX	ECS	Crystals 16MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	344In Stock	$0.83 $0.657 $0.578 $0.563 View $0.545 $0.525 $0.496 $0.473	Min.: 1 Mult.: 1	16 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 16MHz 20pF ECS-160-20-4X ECS 1: $0.83 1,513In Stock 7,200On Order	Mfr. Part No. ECS-160-20-4X Mouser Part No 520-HCU1600-20X	ECS	Crystals 16MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,513In Stock 7,200On Order On Order Ship Dates Mfr. No: ECS-160-20-4X Stock: 1,513 Can Dispatch Immediately On Order: 4,400 Expected 1/2/2027 2,800 Expected 9/2/2027 Factory Lead Time: 17 Weeks	$0.83 $0.651 $0.564 $0.549 View $0.548 $0.518 $0.491 $0.475	Min.: 1 Mult.: 1	16 MHz	20 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 16MHz SERIES ECS-160-S-4X ECS 1: $0.83 373In Stock	Mfr. Part No. ECS-160-S-4X Mouser Part No 520-HCU1600-SX	ECS	Crystals 16MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	373In Stock	$0.83 $0.657 $0.578 $0.548 View $0.51 $0.483 $0.46 $0.438	Min.: 1 Mult.: 1	16 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 18.0Mhz 20pF -10C +70C ECS-180-20-4X ECS 1: $0.789 247In Stock	Mfr. Part No. ECS-180-20-4X Mouser Part No 520-HCU180-20-4X	ECS	Crystals 18.0Mhz 20pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	247In Stock	$0.789 $0.628 $0.578 $0.533 View $0.509 $0.481 $0.46 $0.438	Min.: 1 Mult.: 1	18 MHz	20 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	3.8 mm	3.5 mm	HCS-49USX	Bulk
Crystals 18MHz SERIES ECS-180-S-4X ECS 1: $0.83 962In Stock	Mfr. Part No. ECS-180-S-4X Mouser Part No 520-HCU1800-SX	ECS	Crystals 18MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	962In Stock	$0.83 $0.657 $0.578 $0.563 View $0.51 $0.483 $0.461 $0.439	Min.: 1 Mult.: 1	18 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 18.432MHz 18pF -10C +70C ECS-184-18-4X ECS 1: $0.748 643In Stock 400Expected 6/11/2026	Mfr. Part No. ECS-184-18-4X Mouser Part No 520-HCU184-18-4X	ECS	Crystals 18.432MHz 18pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	643In Stock 400Expected 6/11/2026	$0.748 $0.601 $0.575 $0.509 View $0.48 $0.464 $0.442	Min.: 1 Mult.: 1	18.432 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 18.432000MHz 20pF EX/TEMP HC-49US ECS-184-20-4XDN ECS 1: $0.884 293In Stock	Mfr. Part No. ECS-184-20-4XDN Mouser Part No 520-HCU1843-20DNX	ECS	Crystals 18.432000MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	293In Stock	$0.884 $0.696 $0.613 $0.597 View $0.579 $0.547 $0.487	Min.: 1 Mult.: 1	18.432 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 18.432MHz 20pF ECS-184-20-4X ECS 1: $0.83 112In Stock	Mfr. Part No. ECS-184-20-4X Mouser Part No 520-HCU1843-20X	ECS	Crystals 18.432MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	112In Stock	$0.83 $0.657 $0.578 $0.548 View $0.514 $0.487 $0.464 $0.441	Min.: 1 Mult.: 1	18.432 MHz	20 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	40 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 19.6608MHz 20pF ECS-196.6-20-4X ECS 1: $0.857 415In Stock	Mfr. Part No. ECS-196.6-20-4X Mouser Part No 520-HCU1966-20X	ECS	Crystals 19.6608MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	415In Stock	$0.857 $0.673 $0.609 $0.548 View $0.522 $0.491 $0.476 $0.449	Min.: 1 Mult.: 1	19.6608 MHz	20 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 20MHz 20pF EX/TEMP HC-49US ECS-200-20-4XDN ECS 1: $0.925 836In Stock	Mfr. Part No. ECS-200-20-4XDN Mouser Part No 520-HCU2000-20DNX	ECS	Crystals 20MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	836In Stock	$0.925 $0.732 $0.668 $0.65 View $0.63 $0.594 $0.521 $0.498	Min.: 1 Mult.: 1	20 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 20MHz 20pF ECS-200-20-4X ECS 1: $0.83 1,098In Stock	Mfr. Part No. ECS-200-20-4X Mouser Part No 520-HCU2000-20X	ECS	Crystals 20MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,098In Stock	$0.83 $0.65 $0.575 $0.558 View $0.547 $0.536 $0.487 $0.46	Min.: 1 Mult.: 1	20 MHz	20 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 22.1184MHz Series -10C +70C ECS-221-S-4X ECS 1: $0.816 120In Stock	Mfr. Part No. ECS-221-S-4X Mouser Part No 520-HCU221-S-4X	ECS	Crystals 22.1184MHz Series -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	120In Stock	$0.816 $0.647 $0.567 $0.541 View $0.528 $0.491 $0.469 $0.442	Min.: 1 Mult.: 1	22.1184 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24MHz 12pF ECS-240-12-4X ECS 1: $0.802 909In Stock	Mfr. Part No. ECS-240-12-4X Mouser Part No 520-HCU2400-12X	ECS	Crystals 24MHz 12pF Learn More about ECS hc 49usx quartz crystals	Datasheet	909In Stock	$0.802 $0.639 $0.563 $0.548 View $0.53 $0.50 $0.466	Min.: 1 Mult.: 1	24 MHz	12 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24.0-MHz 16pF ECS-240-16-4X ECS 1: $0.83 1,344In Stock	Mfr. Part No. ECS-240-16-4X Mouser Part No 520-HCU2400-16X	ECS	Crystals 24.0-MHz 16pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,344In Stock	$0.83 $0.657 $0.578 $0.563 View $0.545 $0.487 $0.464 $0.441	Min.: 1 Mult.: 1	24 MHz	16 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24MHz 20pF EX-TEMP HC-49US ECS-240-20-4XDN ECS 1: $1.01 642In Stock	Mfr. Part No. ECS-240-20-4XDN Mouser Part No 520-HCU2400-20DNX	ECS	Crystals 24MHz 20pF EX-TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	642In Stock	$1.01 $0.798 $0.714 $0.685 View $0.63 $0.577 $0.536 $0.513	Min.: 1 Mult.: 1	24 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24MHz 20pF ECS-240-20-4X ECS 1: $0.721 1,205In Stock	Mfr. Part No. ECS-240-20-4X Mouser Part No 520-HCU2400-20X	ECS	Crystals 24MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1,205In Stock	$0.721 $0.573 $0.533 $0.525 View $0.484 $0.477 $0.46	Min.: 1 Mult.: 1	24 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24MHz SERIES ECS-240-S-4X ECS 1: $0.789 162In Stock	Mfr. Part No. ECS-240-S-4X Mouser Part No 520-HCU2400-SX	ECS	Crystals 24MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	162In Stock	$0.789 $0.628 $0.578 $0.563 View $0.545 $0.481 $0.461 $0.438	Min.: 1 Mult.: 1	24 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 24.576000MHz 20pF HC-49US ECS-245.7-20-4X ECS 1: $0.789 558In Stock	Mfr. Part No. ECS-245.7-20-4X Mouser Part No 520-HCU2457-20X	ECS	Crystals 24.576000MHz 20pF HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	558In Stock	$0.789 $0.628 $0.578 $0.563 View $0.545 $0.481 $0.461 $0.438	Min.: 1 Mult.: 1	24.576 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 25MHz 18pF HC-49US ECS-250-18-4X-F ECS 1: $0.857 1,450In Stock	Mfr. Part No. ECS-250-18-4X-F Mouser Part No 520-HCU2500-18X	ECS	Crystals 25MHz 18pF HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	1,450In Stock	$0.857 $0.673 $0.59 $0.575 View $0.559 $0.505 $0.49 $0.468	Min.: 1 Mult.: 1	25 MHz	18 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk