What frequency range does FCX-M5 support?

FCX-M5 covers nominal frequencies from 4 to 200 MHz.

What tolerance and stability options are common?

Typical tolerance is ±10 ppm at 25°C ±3°C. Common stability options include ±10 ppm over -20 to 70°C and ±30 ppm over -40 to 85°C (reference 25°C).

Can I request samples and customized specifications?

Yes. We support samples, volume production, and customization (frequency, CL, tolerance/stability, temperature grade, and screening). Contact us for RFQ.

What are typical MOQ and lead time?

MOQ and lead time depend on frequency, screening, and packaging. Send your target frequency and requirements for the fastest confirmation.

What information should I provide for a quotation?

Provide frequency, CL, tolerance, stability/operating temperature range, overtone requirement (if applicable), and expected annual volume.

Are test reports and compliance documents available?

Yes. Compliance details (RoHS/REACH, Pb-free) and available test/screening information can be provided on request.

FCX-M5 UM-5 Resistance Welded MHz DIP Quartz Crystal

The FCX-M5 is a resistance welded MHz DIP crystal in UM-5 type construction, designed for excellent shock resistance and excellent aging characteristics. It supports a wide 4–200 MHz range and complies with RoHS & REACH (Pb-free).

Frequency: 4–200 MHz Tolerance: ±10 ppm @25°C Stability: ±10 ppm / ±30 ppm Topr: -40 to +85°C CL: 10/18/20 pF Drive: 10 µW typ

FCX-M5 UM-5 resistance welded MHz DIP quartz crystal (product hero)

Key Features

MHz DIP crystal, UM-5 type (resistance welded)
Excellent shock resistance for rugged assemblies
Excellent aging characteristics for long-term frequency stability
RoHS and REACH compliant, Pb-free

Typical Applications

Communication electronics
Measurement instruments

Key Specs (Summary)

Quick reference: typical values at 25°C unless otherwise noted (final limits depend on frequency, overtone, and screening).

Item	Common Option	Why it matters in designs
Frequency range	4–200 MHz	Supports broad clock planning across comms & instrumentation platforms.
Tolerance	±10 ppm @25°C ±3°C	Helps meet initial frequency accuracy budgets for digital timing and IF/reference clocks.
Stability options	±10 ppm (-20 to 70°C) / ±30 ppm (-40 to 85°C)	Improves margin under temperature drift, especially for outdoor/industrial environments.
Load capacitance	10 / 18 / 20 pF (or custom)	Enables proper pulling range and startup behavior in MCU/ASIC Pierce oscillators.
Drive level	10 µW typ (100 µW max)	Protects the resonator from overdrive while preserving aging performance.

Electrical Specifications (Common)

Test condition: ambient temperature 25 ± 5°C; relative humidity 40%–70%. Specifications may vary by frequency and customization.

Parameter	Symbol	Min.	Typ.	Max.	Units	Notes
Nominal Frequency	F		4–200		MHz
Frequency Tolerance	FT		±10		ppm	@25°C ±3°C
Frequency Stability over Operating Temp. Range (Reference 25°C)	ST		±10		ppm	@-20 to 70°C
	ST		±30		ppm	@-40 to 85°C
Operating Temperature	Topr	-40	25	85	°C
Load Capacitance	CL		10 / 18 / 20		pF	or specify
Drive Level	DL		10	100	µW
Aging	-		±5		ppm	1st year

Equivalent Series Resistance (ESR) Limits (Max.)

Frequency Range	ESR (Max.)	Units	Notes
4–20 MHz	80	Ω
20–48 MHz	30	Ω
24–100 MHz	80	Ω	3rd overtone
100–200 MHz	100	Ω	5th overtone

Note: The tables show common specs. If you have special specification requirements, please contact our salesperson.

Applications (Why These Specs Matter)

For B2B designs, the “right crystal” is rarely defined by frequency alone. FCX-M5 is typically selected when you need a MHz DIP resonator that stays stable over environment and time, while handling assembly stress (shock/vibration) and maintaining predictable startup in a Pierce oscillator.

Scenario	What designers need	How FCX-M5 helps
Communication electronics	Frequency accuracy margin, stable over temperature	±10 ppm @25°C and stability options support tighter link timing and frequency planning.
Measurement instruments	Low drift and low aging over service life	Excellent aging characteristics reduce recalibration frequency in long deployments.
Rugged assemblies	Shock resistance in handling/transport and industrial installation	Resistance welded construction supports strong mechanical robustness vs. lighter structures.
MCU/ASIC Pierce oscillators	CL matching and safe drive	CL 10/18/20 pF options and defined drive level help predictable startup and reliability.

Need a clocking guide for “bare crystal + internal oscillator” systems? See Using a 16 MHz crystal oscillator in embedded designs.

Ordering Code / Options

For the fastest RFQ, specify the items below. For overtone regions (e.g., 3rd/5th overtone), please state the overtone requirement explicitly.

Frequency: target MHz (4–200 MHz)
Load capacitance (CL): 10 pF / 18 pF / 20 pF (or custom)
Tolerance: e.g., ±10 ppm @25°C
Stability / temperature grade: e.g., ±10 ppm (-20 to 70°C) or ±30 ppm (-40 to 85°C)
Screening: aging, shock/vibration, burn-in (if needed)
Packaging: tray/bulk and labeling requirements
Volume: prototype/samples, pilot run, mass production forecast

Selection Path / Upgrade Options

If you are comparing packages or frequency ranges, these pages help you move fast:

FCX-M1 (UM-1 MHz DIP quartz crystal) — alternative UM series option
FCX-4U (HC-49U crystal) — common through-hole footprint family
FCX-5U (50U quartz crystal) — lower-frequency crystal family reference
SMD crystal selection for MCU/SoC clocks — if you’re migrating from DIP to SMD
RTC 32.768 kHz selection guide — for always-on timekeeping architectures

Downloads

File	Description	Link
Datasheet (PDF)	FCX-M5 quartz crystal, resistance welded DIP UM-5	Download
Mechanical drawing (image)	FCX-M5 mechanical dimensions (mm)	View
ISO certifications	Quality & environmental management references	ISO9001 · ISO14001

Need screening reports, packaging spec, or incoming inspection guidance? Contact technical support.

Mechanical Dimensions (mm)

FCX-M5 mechanical dimensions drawing (mm) — FCX-M5 mechanical dimensions (mm)

Height (H) by Type

Type	H (mm)	Notes
UM-1	7.8 ± 0.2	Reference (UM series table)
UM-1/SMD	7.8 ± 0.2	Reference (UM series table)
UM-5	6.0 ± 0.2	FCX-M5 (UM-5 type)
UM-5/SMD	6.0 ± 0.2	SMD option

Common outline callouts in the drawing include body width 6.9 ± 0.2 mm, thickness 2.2 ± 0.1 mm, and lead diameter 0.35 ± 0.05 mm.

Knowledge & Design Notes (Internal References)

If you are building a frequency plan, validating oscillator startup, or educating procurement/QA, these references provide useful background.

Resonator basics: Frequency crystal science · What is resonant frequency?
Frequency planning: Quartz frequency guide · Quartz crystal frequency ranges
Applications: SMD crystal for MCU/SoC clock selection · Using 16 MHz crystals in embedded designs

For application engineering support (oscillator circuit check, CL recommendation, drive-level validation), please use the technical support入口.

FAQ

Question	Answer
What frequency range does FCX-M5 support?	FCX-M5 covers nominal frequencies from 4 to 200 MHz.
What tolerance and stability options are common?	Typical tolerance is ±10 ppm at 25°C ±3°C. Common stability options include ±10 ppm over -20 to 70°C and ±30 ppm over -40 to 85°C (reference 25°C).
Can I request samples and customized specifications?	Yes. We support samples, volume production, and customization (frequency, CL, tolerance/stability, temperature grade, and screening). Contact us for RFQ.
What are typical MOQ and lead time?	MOQ and lead time depend on frequency, screening, and packaging. Send your target frequency and requirements for the fastest confirmation.
What information should I provide for a quotation?	Provide frequency, load capacitance (CL), tolerance, stability/operating temperature range, overtone requirement (if applicable), and expected annual volume.
Are test reports and compliance documents available?	Yes. Compliance details (RoHS/REACH, Pb-free) and available test/screening information can be provided on request.

Need a quote or custom specification for FCX-M5?

Send frequency, CL, tolerance/stability, operating temperature, overtone (if applicable), and expected volume for a fast response.

Ask Engineering Request RFQ

Compliance: RoHS & REACH compliant, Pb-free. Specifications shown are common values; please contact FCom Fuji Crystal for special requirements.