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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 (EUR) 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 24.576000MHz 20pF HC-49US ECS-245.7-20-4X ECS 1: 0,499 € 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	0,499 € 0,397 € 0,366 € 0,356 € View 0,345 € 0,304 € 0,292 € 0,277 €	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: 0,542 € 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	0,542 € 0,426 € 0,373 € 0,364 € View 0,353 € 0,319 € 0,31 € 0,296 €	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
Crystals 27.0Mhz 18pF -10C +70C ECS-270-18-4X-F ECS 1: 0,499 € 270In Stock	Mfr. Part No. ECS-270-18-4X-F Mouser Part No 520-HCU270-18-4X-F	ECS	Crystals 27.0Mhz 18pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	270In Stock	0,499 € 0,415 € 0,366 € 0,356 € View 0,322 € 0,304 € 0,292 € 0,277 €	Min.: 1 Mult.: 1	27 MHz	18 pF	30 PPM	50 PPM	HC-49/USX	- 10 C	+ 70 C	Radial	30 Ohms	500 uW	11.35 mm	3.8 mm	3.5 mm	HCS-49USX	Bulk
Crystals 3.579545MHz 17pF ECS-35-17-4X ECS 1: 0,49 € 1.247In Stock	Mfr. Part No. ECS-35-17-4X Mouser Part No 520-HCU357-17X	ECS	Crystals 3.579545MHz 17pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1.247In Stock	0,49 € 0,39 € 0,353 € 0,352 € View 0,299 € 0,286 € 0,271 €	Min.: 1 Mult.: 1	3.579545 MHz	17 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 3.579545MHz SERIES ECS-35-S-4X ECS 1: 0,55 € 120In Stock 1.000On Order	Mfr. Part No. ECS-35-S-4X Mouser Part No 520-HCU357-SX	ECS	Crystals 3.579545MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	120In Stock 1.000On Order	0,55 € 0,432 € 0,385 € 0,372 € View 0,359 € 0,316 € 0,307 € 0,292 €	Min.: 1 Mult.: 1	3.579545 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 3.6864MHz 100ppm ECS-36-18-4XDN ECS 1: 0,955 € 91In Stock	Mfr. Part No. ECS-36-18-4XDN Mouser Part No 520-HCU368-18DNX	ECS	Crystals 3.6864MHz 100ppm Learn More about ECS hc 49usx quartz crystals	Datasheet	91In Stock	0,955 € 0,753 € 0,692 € 0,664 € View 0,648 € 0,627 € 0,592 € 0,58 €	Min.: 1 Mult.: 1	3.6864 MHz	18 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 3.6864MHz 18pF ECS-36-18-4X ECS 1: 0,482 € 2.759In Stock	Mfr. Part No. ECS-36-18-4X Mouser Part No 520-HCU368-18X	ECS	Crystals 3.6864MHz 18pF Learn More about ECS hc 49usx quartz crystals	Datasheet	2.759In Stock	0,482 € 0,389 € 0,352 € 0,342 € View 0,332 € 0,313 € 0,304 €	Min.: 1 Mult.: 1	3.6864 MHz	18 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 3.6864MHz 20pF EX/TEMP HC-49US ECS-36-20-4XDN ECS 1: 0,585 € 561In Stock	Mfr. Part No. ECS-36-20-4XDN Mouser Part No 520-HCU368-20DNX	ECS	Crystals 3.6864MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	561In Stock	0,585 € 0,463 € 0,422 € 0,421 € View 0,372 € 0,356 € 0,329 € 0,315 €	Min.: 1 Mult.: 1	3.6864 MHz	20 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 3.6864MHz SERIES ECS-36-S-4X ECS 1: 0,55 € 14In Stock	Mfr. Part No. ECS-36-S-4X Mouser Part No 520-HCU368-SX	ECS	Crystals 3.6864MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	14In Stock	0,55 € 0,432 € 0,385 € 0,372 € View 0,328 € 0,31 € 0,296 € 0,284 €	Min.: 1 Mult.: 1	3.6864 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	200 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4MHz 20pF EX/TEMP HC-49US ECS-40-20-4XDN ECS 1: 0,559 € 1.958In Stock	Mfr. Part No. ECS-40-20-4XDN Mouser Part No 520-HCU400-20DNX	ECS	Crystals 4MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	1.958In Stock	0,559 € 0,44 € 0,388 € 0,378 € View 0,366 € 0,346 € 0,321 €	Min.: 1 Mult.: 1	4 MHz	20 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4MHz 20pF ECS-40-20-4X ECS 1: 0,464 € 3.287In Stock 5.000Expected 11/6/2026	Mfr. Part No. ECS-40-20-4X Mouser Part No 520-HCU400-20X	ECS	Crystals 4MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	3.287In Stock 5.000Expected 11/6/2026	0,464 € 0,371 € 0,314 € 0,304 € View 0,294 € 0,292 € 0,276 €	Min.: 1 Mult.: 1	4 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4MHz SERIES ECS-40-S-4X ECS 1: 0,499 € 304In Stock	Mfr. Part No. ECS-40-S-4X Mouser Part No 520-HCU400-SX	ECS	Crystals 4MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	304In Stock	0,499 € 0,397 € 0,366 € 0,356 € View 0,324 € 0,307 € 0,293 € 0,287 € 0,278 €	Min.: 1 Mult.: 1	4 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals CRYSTAL 4.032MHz ECS-40.3-20-4X ECS 1: 0,585 € 1.016In Stock	Mfr. Part No. ECS-40.3-20-4X Mouser Part No 520-HCU403-20X	ECS	Crystals CRYSTAL 4.032MHz Learn More about ECS hc 49usx quartz crystals	Datasheet	1.016In Stock	0,585 € 0,463 € 0,422 € 0,421 € View 0,415 € 0,356 € 0,329 € 0,315 €	Min.: 1 Mult.: 1	4.032 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals CRYSTAL 4.032MHz ECS-40.3-S-4X ECS 1: 0,55 € 9In Stock	Mfr. Part No. ECS-40.3-S-4X Mouser Part No 520-HCU403-SX	ECS	Crystals CRYSTAL 4.032MHz Learn More about ECS hc 49usx quartz crystals	Datasheet	9In Stock	0,55 € 0,432 € 0,385 € 0,353 € View 0,335 € 0,316 € 0,307 € 0,292 €	Min.: 1 Mult.: 1	4.032 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals CRYSTAL 4.096MHz ECS-41-20-4X ECS 1: 0,525 € 437In Stock	Mfr. Part No. ECS-41-20-4X Mouser Part No 520-HCU409-20X	ECS	Crystals CRYSTAL 4.096MHz Learn More about ECS hc 49usx quartz crystals	Datasheet	437In Stock	0,525 € 0,415 € 0,366 € 0,347 € View 0,325 € 0,308 € 0,293 € 0,279 €	Min.: 1 Mult.: 1	4.096 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4.194304MHz 12pF ECS-42-12-4X ECS 1: 0,525 € 936In Stock	Mfr. Part No. ECS-42-12-4X Mouser Part No 520-HCU419-12X	ECS	Crystals 4.194304MHz 12pF Learn More about ECS hc 49usx quartz crystals	Datasheet	936In Stock	0,525 € 0,415 € 0,366 € 0,356 € View 0,325 € 0,308 € 0,293 € 0,279 €	Min.: 1 Mult.: 1	4.194304 MHz	12 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals CRYSTAL 4.194304MHz ECS-42-16-4X ECS 1: 0,525 € 407In Stock	Mfr. Part No. ECS-42-16-4X Mouser Part No 520-HCU419-16X	ECS	Crystals CRYSTAL 4.194304MHz Learn More about ECS hc 49usx quartz crystals	Datasheet	407In Stock	0,525 € 0,415 € 0,366 € 0,347 € View 0,323 € 0,305 € 0,292 € 0,278 €	Min.: 1 Mult.: 1	4.194304 MHz	16 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4.433618MHz 20pF ECS-44-20-4X ECS 1: 0,499 € 711In Stock	Mfr. Part No. ECS-44-20-4X Mouser Part No 520-HCU443-20X	ECS	Crystals 4.433618MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	711In Stock	0,499 € 0,397 € 0,359 € 0,356 € View 0,322 € 0,304 € 0,291 € 0,277 €	Min.: 1 Mult.: 1	4.433618 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4.9152MHz 20pF ECS-49-20-4X ECS 1: 0,525 € 1.079In Stock	Mfr. Part No. ECS-49-20-4X Mouser Part No 520-HCU491-20X	ECS	Crystals 4.9152MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	1.079In Stock	0,525 € 0,415 € 0,366 € 0,356 € View 0,353 € 0,305 € 0,292 € 0,277 €	Min.: 1 Mult.: 1	4.9152 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 4.9152MHz SERIES ECS-49-S-4X ECS 1: 0,55 € 77In Stock	Mfr. Part No. ECS-49-S-4X Mouser Part No 520-HCU491-SX	ECS	Crystals 4.9152MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	77In Stock	0,55 € 0,432 € 0,365 € 0,349 € View 0,329 € 0,308 € 0,293 € 0,276 €	Min.: 1 Mult.: 1	4.9152 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	150 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 5MHz 20pF ECS-50-20-4X ECS 1: 0,525 € 478In Stock	Mfr. Part No. ECS-50-20-4X Mouser Part No 520-HCU500-20X	ECS	Crystals 5MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	478In Stock	0,525 € 0,412 € 0,363 € 0,353 € View 0,342 € 0,318 € 0,306 € 0,292 €	Min.: 1 Mult.: 1	5 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	120 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 5MHz SERIES ECS-50-S-4X ECS 1: 0,525 € 87In Stock	Mfr. Part No. ECS-50-S-4X Mouser Part No 520-HCU500-SX	ECS	Crystals 5MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	87In Stock	0,525 € 0,415 € 0,366 € 0,347 € View 0,323 € 0,305 € 0,292 € 0,278 €	Min.: 1 Mult.: 1	5 MHz	Series	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	120 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 5.0688MHz 20pF ECS-51-20-4X ECS 1: 0,525 € 491In Stock	Mfr. Part No. ECS-51-20-4X Mouser Part No 520-HCU506-20X	ECS	Crystals 5.0688MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	491In Stock	0,525 € 0,415 € 0,366 € 0,356 € View 0,323 € 0,305 € 0,292 € 0,278 €	Min.: 1 Mult.: 1	5.0688 MHz	20 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	120 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 6MHz 32pF EX/TEMP HC-49US ECS-60-32-4XDN ECS 1: 0,611 € 100In Stock	Mfr. Part No. ECS-60-32-4XDN Mouser Part No 520-HCU600-32DNX	ECS	Crystals 6MHz 32pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	100In Stock	0,611 € 0,479 € 0,422 € 0,404 € View 0,373 € 0,357 € 0,328 € 0,313 €	Min.: 1 Mult.: 1	6 MHz	32 pF	30 PPM	100 PPM	HC-49/US	- 40 C	+ 85 C	Radial	100 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk
Crystals 6MHz 32pF ECS-60-32-4X ECS 1: 0,499 € 777In Stock	Mfr. Part No. ECS-60-32-4X Mouser Part No 520-HCU600-32X	ECS	Crystals 6MHz 32pF Learn More about ECS hc 49usx quartz crystals	Datasheet	777In Stock	0,499 € 0,397 € 0,359 € 0,356 € View 0,322 € 0,304 € 0,292 € 0,277 €	Min.: 1 Mult.: 1	6 MHz	32 pF	30 PPM	50 PPM	HC-49/US	- 10 C	+ 70 C	Radial	100 Ohms	500 uW	11.35 mm	4.65 mm	3.5 mm	HCS-49USX	Bulk