Crystals – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 159

Applied Filters:

Frequency

Load Capacitance

Tolerance

Frequency Stability

Package/Case

Minimum Operating Temperature

Maximum Operating Temperature

ESR

Drive Level

Length

Width

Height

Series

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) 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 27.0Mhz 18pF -10C +70C ECS-270-18-4X-F ECS 1: £0.436 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	£0.436 £0.362 £0.32 £0.311 View £0.281 £0.265 £0.255 £0.242	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: £0.428 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	£0.428 £0.34 £0.308 £0.307 View £0.261 £0.25 £0.237	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: £0.48 120In Stock 1,000Expected 02/11/2026	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 1,000Expected 02/11/2026	£0.48 £0.377 £0.336 £0.325 View £0.313 £0.276 £0.268 £0.255	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: £0.834 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	£0.834 £0.657 £0.604 £0.58 View £0.566 £0.547 £0.517 £0.506	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: £0.421 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	£0.421 £0.34 £0.307 £0.299 View £0.29 £0.273 £0.265	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: £0.511 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	£0.511 £0.404 £0.368 £0.325 View £0.311 £0.287 £0.275	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: £0.48 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	£0.48 £0.377 £0.336 £0.325 View £0.286 £0.271 £0.258 £0.248	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: £0.488 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	£0.488 £0.384 £0.339 £0.33 View £0.32 £0.302 £0.28	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: £0.405 3,287In Stock 5,000Expected 06/11/2026	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 06/11/2026	£0.405 £0.324 £0.274 £0.265 View £0.257 £0.255 £0.241	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: £0.436 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	£0.436 £0.347 £0.32 £0.311 View £0.283 £0.268 £0.256 £0.251 £0.243	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: £0.511 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	£0.511 £0.404 £0.368 £0.362 View £0.311 £0.287 £0.275	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: £0.48 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	£0.48 £0.377 £0.336 £0.308 View £0.292 £0.276 £0.268 £0.255	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: £0.458 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	£0.458 £0.362 £0.32 £0.303 View £0.284 £0.269 £0.256 £0.244	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: £0.458 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	£0.458 £0.362 £0.32 £0.311 View £0.284 £0.269 £0.256 £0.244	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: £0.458 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	£0.458 £0.362 £0.32 £0.303 View £0.282 £0.266 £0.255 £0.243	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: £0.436 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	£0.436 £0.347 £0.313 £0.311 View £0.281 £0.265 £0.254 £0.242	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: £0.458 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	£0.458 £0.362 £0.32 £0.311 View £0.308 £0.266 £0.255 £0.242	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: £0.48 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	£0.48 £0.377 £0.319 £0.305 View £0.287 £0.269 £0.256 £0.241	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: £0.458 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	£0.458 £0.36 £0.317 £0.308 View £0.299 £0.278 £0.267 £0.255	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: £0.458 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	£0.458 £0.362 £0.32 £0.303 View £0.282 £0.266 £0.255 £0.243	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: £0.458 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	£0.458 £0.362 £0.32 £0.311 View £0.282 £0.266 £0.255 £0.243	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: £0.533 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	£0.533 £0.418 £0.368 £0.353 View £0.326 £0.312 £0.286 £0.273	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: £0.436 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	£0.436 £0.347 £0.313 £0.311 View £0.281 £0.265 £0.255 £0.242	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
Crystals 6MHz SERIES ECS-60-S-4X ECS 1: £0.458 344In Stock	Mfr. Part No. ECS-60-S-4X Mouser Part No 520-HCU600-SX	ECS	Crystals 6MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	344In Stock	£0.458 £0.362 £0.32 £0.303 View £0.288 £0.271 £0.263 £0.248	Min.: 1 Mult.: 1	6 MHz	Series	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
Crystals 6.144MHz 32pF ECS-61-32-4X ECS 1: £0.436 775In Stock	Mfr. Part No. ECS-61-32-4X Mouser Part No 520-HCU614-32X	ECS	Crystals 6.144MHz 32pF Learn More about ECS hc 49usx quartz crystals	Datasheet	775In Stock	£0.436 £0.348 £0.306 £0.305 View £0.295 £0.284 £0.255 £0.243	Min.: 1 Mult.: 1	6.144 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