Quartz Crystal Resonators — Find Your Series

40+ series across four categories: SMD, Low CL, Through Hole, and AEC-Q200 Automotive. Pick your package, match your spec, and get free samples within 72 hours. 1 piece is acceptable.

Not sure where to start?

Three ways to narrow down 40+ series to the ones that match your design.

By Mounting & Size

From 1210 (1.2 × 1.0 mm) to HC-49U through-hole. SMD configurations cover the majority of new designs, while through-hole options support legacy and high-power applications.

SMD Table

Through-Hole Table

By Performance Need

Standard SMD series cover standard designs at ±5 ppm tolerance and -40 to +125°C. Low CL series deliver 4 pF for ultra-low-power MCUs, and automotive series carry AEC-Q200 qualification.

Standard SMD

Low CL (4 pF)

AEC-Q200

By Application

Consumer and IoT designs align with the standard SMD table. Battery-powered, always-on devices require Low CL series, while under-hood and safety-critical systems utilize the AEC-Q200 table.

Consumer / IoT

Battery / Low Power

Automotive

Series Parametric Table

Compare by package, frequency range, tolerance, temperature range, and more. Click any Series name to download its datasheet.

Series	Package	Frequency Range	Tolerance	Stability	Temp. Range	CL	ESR	Mount	Contact
FCX-1S	1210 4-SMD	24 – 76.8 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	60 – 100 Ω	SMD	Inquiry
FCX-1M	1612 4-SMD	24 – 60 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 60 Ω	SMD	Inquiry
FSX-1M	1612 4-SMD	24 – 60 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 60 Ω	SMD	Inquiry
FCX-2S	2016 4-SMD	16 – 96 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 100 Ω	SMD	Inquiry
FSX-2MS	2016 4-SMD	16 – 96 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 100 Ω	SMD	Inquiry
FCX-2M	2520 4-SMD	12 – 66 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	60 – 180 Ω	SMD	Inquiry
FSX-2M	2520 4-SMD	12 – 66 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	60 – 180 Ω	SMD	Inquiry
FCX-3M	3225 4-SMD	8 – 80 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 300 Ω	SMD	Inquiry
FSX-3M	3225 4-SMD	8 – 80 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 300 Ω	SMD	Inquiry
FCX-3G	3225 4-SMD	8 – 55.4 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 300 Ω	SMD	Inquiry
FSX-3L	3225 4-SMD	8 – 55.4 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 300 Ω	SMD	Inquiry
FCX-5M	5032 4-SMD	8 – 54 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 80 Ω	SMD	Inquiry
FSX-5M	5032 4-SMD	8 – 54 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 80 Ω	SMD	Inquiry
FCX-5G	5032 2-SMD	8 – 54 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 120 Ω	SMD	Inquiry
FSX-5L	5032 2-SMD	8 – 54 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	40 – 120 Ω	SMD	Inquiry
FCX-7M	7050 4-SMD	6 – 48 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	80 – 100 Ω	SMD	Inquiry
FSX-7M	7050 4-SMD	6 – 48 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	80 – 100 Ω	SMD	Inquiry
FCX-9M	HC-49/US 2-SMD	3.2 – 64 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 120 Ω	SMD	Inquiry
HCM49S	HC-49/US 2-SMD	3.2 – 64 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 120 Ω	SMD	Inquiry

Series	Package	Frequency Range	Tolerance	Stability	Temp. Range	CL	ESR	Mount	Contact
FCX-1S-LC	1210 4-SMD	24 – 76.8 MHz	±10 ppm	±30 ppm	−40 to +95°C	4 pF	60 – 100 Ω	SMD	Inquiry
FCX-1M-LC	1612 4-SMD	24 – 60 MHz	±10 ppm	±30 ppm	−40 to +95°C	4 pF	30 – 60 Ω	SMD	Inquiry
FCX-2S-LC	2016 4-SMD	16 – 96 MHz	±10 ppm	±30 ppm	−40 to +95°C	4 pF	30 – 100 Ω	SMD	Inquiry
FCX-2M-LC	2520 4-SMD	12 – 66 MHz	±10 ppm	±30ppm	−40 to +95°C	4 pF	60 – 180 Ω	SMD	Inquiry
FCX-3M-LC	3225 4-SMD	8 – 80 MHz	±10 ppm	±30 ppm	−40 to +95°C	4 pF	30 – 300 Ω	SMD	Inquiry

Series	Package	Frequency Range	Tolerance	Stability	Temp. Range	CL	ESR	Mount	Contact
HC-49/US	HC-49/US	3.2 – 64 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 120 Ω	DIP	Inquiry
FCX-9S	HC-49/US	3.2 – 64 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 120 Ω	DIP	Inquiry
FCX-4U	HC-49U	1.8 – 64 MHz	±5 ppm	±15 ppm	−40 to +125°C	18 pF	40 – 300 Ω	DIP	Inquiry
FCX-5U	HC-50U	0.85 – 4 MHz	±10 ppm	±15 ppm	−40 to +125°C	18 pF	100 – 1000 Ω	DIP	Inquiry
FCX-M1	UM-1	7 – 200 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	25 – 100 Ω	DIP	Inquiry
FCX-M5	UM-5	7 – 200 MHz	±5 ppm	±10 ppm	−40 to +125°C	18 pF	30 – 100 Ω	DIP	Inquiry

Series	Package	Frequency Range	Tolerance	Stability	Temp. Range	CL	ESR	Mount	Contact
FCX-1S-A	1210 4-SMD	24 – 76.8 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	60 – 100 Ω	SMD	Inquiry
FCX-1M-A	1612 4-SMD	24 – 60 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	30 – 60 Ω	SMD	Inquiry
FCX-2S-A	2016 4-SMD	16 – 52 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	50 – 120 Ω	SMD	Inquiry
FCX-2M-A	2520 4-SMD	12 – 54 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	80 – 160 Ω	SMD	Inquiry
FCX-3M-A	3225 4-SMD	8 – 50 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	40 – 200 Ω	SMD	Inquiry
FCX-3G-A	3225 4-SMD	8 – 54 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	60 – 300 Ω	SMD	Inquiry
FCX-3L-A	3225 2-SMD	8 MHz	±50 ppm	±150 ppm	−40 to +125°C	8 pF	500 Ω	SMD	Inquiry
FCX-5M-A	5032 4-SMD	8 – 54 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	50 – 100 Ω	SMD	Inquiry
FCX-5G-A	5032 2-SMD	8 – 54 MHz	±10 ppm	±50 ppm	−40 to +125°C	18 pF	60 – 140 Ω	SMD	Inquiry

Matched a series? Here's what comes next.

Once you’ve narrowed it down, the real work is confirming it works on your board not just on the datasheet. To advance your prototype manufacturing, we offer the following support:

Phase 01 // Product Selection

Download Selection Guide

Compare 39 series across Standard SMD, Low CL, Through-Hole and Automotive categories. Review key specifications and access individual series datasheets.

Phase 02 // Engineering

Validate Circuit Match

Submit your target parameters and IC model. Our laboratory verifies drive-level margins, startup conditions, and negative resistance stability.

Full-Cycle Engineering Services

Beyond standard verification, our laboratory provides complete technical support throughout your entire product lifecycle:

Contact an FCom Engineer