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FCX-6R Quartz Crystal with Built-in Thermistor | 2.0×1.6mm

SMD 2.0 x 1.6 mm; AEC-Q200

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Crystal with built-in Thermistor

FEATURE

The FCX-6R is a compact SMD quartz crystal featuring a built-in thermistor for precise thermal monitoring and frequency correction. With a footprint of only 2.0 × 1.6 × 0.65 mm, it supports frequencies from 19.2 MHz to 54 MHz with excellent stability over a wide temperature range. Ideal for space-constrained and high-reliability applications such as GNSS, mobile devices, and wearables.

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Datasheet

Product Description

FCX-6R Quartz Crystal with Built-in Thermistor (2.0×1.6mm)

Key Features

Ultra-small SMD package: 2.0 × 1.6 × 0.65 mm
Integrated thermistor for temperature sensing
Frequency range: 19.2 ~ 54 MHz
Frequency tolerance: ±10 ppm @ 25°C ±3°C
Frequency stability: ±12 ppm over −30°C to +85°C
Load capacitance: 6 / 7 / 8 pF or custom-specified
Drive level: 10 ~ 100 µW
ESR: Max. 100 Ω (19.2~30 MHz), 80 Ω (30~54 MHz)
Thermistor resistance: 22–100 kΩ @ 25°C
Thermistor B-constant: 3380–4250 K @ 25–50°C
Storage temperature: −40°C to +125°C
Aging: ±3 ppm/year (1st year)
RoHS and REACH compliant, Pb-free

Applications

Mobile phones
GPS/GNSS positioning modules
Wearable electronics
Smart sensor nodes with thermal calibration

Electrical Specifications

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Nominal Frequency	F	19.2	–	54	MHz	@25°C, RH 40%~70%
Frequency Tolerance	FT	–	±10	–	ppm	@ 25°C ±3°C
Frequency Stability	ST	–	±12	–	ppm	−30°C to +85°C
Operating Temperature	Topr	−30	25	+85	°C	–
Load Capacitance	CL	6	–	8	pF	Or specify
Drive Level	DL	10	–	100	µW	–
ESR (19.2–30 MHz)	–	–	–	100	Ω	Max
ESR (30–54 MHz)	–	–	–	80	Ω	Max
Thermistor Resistance	–	22	–	100	kΩ	@ 25°C
B-constant	–	3380	–	4250	K	@ 25~50°C
Storage Temperature	Tstr	−40	–	+125	°C	–
Aging (1st year)	–	–	±3	–	ppm/year	@ 25°C

Technological applications exploit quartz's unique physical properties with remarkable precision. The crystal's vibrational stability at exactly 32,768 times per second makes it the timekeeping heart of watches and electronics. In telecommunications, quartz filters radio frequencies with unmatched accuracy. Semiconductor manufacturing relies on ultra-pure quartz crucibles to melt silicon wafers, while optics utilize its UV-transmitting qualities in specialized lenses. The same piezoelectric effect that powers cigarette lighters also enables sophisticated medical ultrasound imaging. Modern civilization literally pulses to quartz's rhythm – an estimated 10 billion quartz crystals oscillate in devices worldwide at this moment, their silent vibrations powering our digital infrastructure.

Beyond circuitry and machinery, quartz crystals occupy sacred space in human culture. Ancient civilizations from Atlantis-obsessed Theosophists to Tibetan monks regarded clear quartz as "solidified light" or frozen cosmic energy. Contemporary crystal healers attribute metaphysical properties to different varieties – rose quartz for love, smoky quartz for grounding, rutilated quartz for spiritual connection – though science remains skeptical. Artists and jewelers prize quartz for its optical qualities; the way a well-cut crystal bends light into rainbows or displays mesmerizing internal fractals. Museums showcase spectacular specimens like Arkansas' 7-ton crystal cluster or Brazil's cathedral-like geodes, while minimalist designers deploy polished quartz points as objets d'art that play with light and shadow.

The future of quartz continues to unfold along dual paths of technological innovation and ecological consideration. Synthetic quartz production now meets industrial demand through autoclave processes that mimic geological conditions in weeks rather than millennia. Meanwhile, ethical concerns prompt reevaluation of mining practices in places like Madagascar and Brazil, where crystal extraction impacts local ecosystems. Researchers explore novel applications in quantum computing and photonics, where quartz's optical purity may enable breakthroughs. Yet for all our scientific understanding, quartz retains its primal mystery – those flawless facets emerging from Earth's chaos still feel like a whispered secret from the planet itself, a tangible reminder that nature's simplest formula (SiO₂) can yield both technological miracles and objects of transcendent beauty.

Key words:

AB308

DT38

FL38T2

WA3