Crystals

Image	Part Number	Description / PDF	Quantity	Rfq
	CX3225CA25000D0HSSZ1 KYOCERA Corporation	CRYSTAL 25.0000MHZ 8PF SMD	0
	CX2016DB40000H0WZKC3 KYOCERA Corporation	CRYSTAL 40.0000HZMHZ 12PF SMD	0
	ST3215SB32768B0HPWBB KYOCERA Corporation	CRYSTAL 32.7680KHZ 6PF SMD	0
	CX2016DB16000D0JLNCC KYOCERA Corporation	CRYSTAL 16.0000MHZ 8PF SMD	0
	CX3225GA24000D0PTVZ1 KYOCERA Corporation	CRYSTAL 24.0000MHZ 8PF SMD	0
	ST4115SB32768E0HPWZZ KYOCERA Corporation	CRYSTAL 32.7680KHZ 9PF SMD	0
	ST2012SB32768H5FPWAA KYOCERA Corporation	CRYSTAL 32.7680KHZ 12.5PF SMD	0
	ST2012SB32768C0HPWB4 KYOCERA Corporation	CRYSTAL 32.7680KHZ 7PF SMD	0
	ST2012SB32768Z0HPWBB KYOCERA Corporation	CRYSTAL 32.7680KHZ 4PF SMD	0
	ST4115SB32768H5HPWZZ KYOCERA Corporation	CRYSTAL 32.7680KHZ 12.5PF SMD	0
	ST3215SB32768H0HPWBB KYOCERA Corporation	CRYSTAL 32.7680KHZ SURFACE MOUNT	0
	CX3225CA27000D0HSSZ1 KYOCERA Corporation	CRYSTAL 27.0000MHZ 8PF SMD	0
	ST3215SB32768E0HPWB1 KYOCERA Corporation	CRYSTAL 32.7680KHZ 9PF SMD	0
	CX3225GA13560D0PTVZ1 KYOCERA Corporation	CRYSTAL 13.5600MHZ 8PF SMD	0
	CX3225GA26000D0PTVZ1 KYOCERA Corporation	CRYSTAL 26.0000MHZ 8PF SMD	0
	ST3215SB32768A0HPWBB KYOCERA Corporation	CRYSTAL 32.7680KHZ 5PF SMD	0
	CX2016DB16000D0JLJCC KYOCERA Corporation	CRYSTAL 16.0000MHZ 8PF SMD	0
	CX2520SB26000D0FLG17 KYOCERA Corporation	CRYSTAL 26.0000MHZ 8PF SMD	0
	CX2520SB16000D0FLJZZ KYOCERA Corporation	CRYSTAL 16.0000MHZ 8PF SMD	0
	CX3225CA30000D0HSSZ1 KYOCERA Corporation	CRYSTAL 30.0000MHZ 8PF SMD	0

Crystals

1. Overview

Crystals, oscillators, and resonators are passive electronic components that generate stable frequency signals for timing and synchronization in electronic systems. Crystals (e.g., quartz) utilize piezoelectric properties to produce precise oscillations. Oscillators integrate active circuitry to generate periodic signals, while resonators provide frequency-selective feedback. These components are critical in communication systems, computing devices, industrial controls, and consumer electronics.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Quartz Crystals	High frequency stability, low phase noise	Microprocessors, GPS modules, RF transceivers
Ceramic Resonators	Lower cost, moderate stability	Remote controls, toys, low-precision sensors
MEMS Resonators	Miniaturized, shock-resistant	IoT devices, wearables, automotive sensors
Crystal Oscillators (XO)	Integrated driver circuitry	Network switches, test equipment, precision clocks

3. Structure and Composition

A typical quartz crystal consists of a precision-cut piezoelectric wafer (AT-cut or SC-cut), metallized electrodes (silver or gold), and a hermetically sealed package (glass or ceramic). MEMS resonators use silicon-based microstructures with electrostatic or piezoelectric transducers. Ceramic resonators employ zirconium titanate (PZT) materials with printed electrodes.

4. Key Technical Specifications

Parameter	Description	Importance
Frequency Range	Operating frequency band (kHz-MHz)	Determines circuit timing resolution
Frequency Tolerance	Initial accuracy at 25 C (ppm)	Impacts system synchronization
Temperature Stability	Frequency drift over temperature (ppm/ C)	Critical for harsh environments
Equivalent Series Resistance (ESR)	Internal resistance affecting startup time	Impacts oscillator reliability
Aging Rate	Long-term frequency shift (ppm/year)	System longevity consideration

5. Application Fields

Key industries include:

Telecommunications: 5G base stations, optical transceivers
Industrial Automation: PLCs, robotics controllers
Consumer Electronics: Smartphones, smartwatches
Automotive: ECUs, tire pressure sensors
Medical Devices: Pacemakers, diagnostic equipment

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Epson	SG-8003	32.768 kHz TCXO for real-time clocks
Murata	XRCGB32M000F	32 MHz ceramic resonator
SiTime	SiT8924	MEMS-based automotive-grade oscillator
TXC Corporation	9B-26.000MHZ	26 MHz quartz crystal for Bluetooth modules

7. Selection Guidelines

Key considerations:

Required frequency and stability (temperature/vibration)
Power consumption constraints
Environmental operating conditions
Package size and mounting type
Cost vs. precision trade-offs

Example: For IoT edge devices, prioritize MEMS resonators with low power (<10 A) and 50 ppm stability.

8. Industry Trends

Emerging trends include:

Miniaturization: 0.4x0.2 mm MEMS devices for wearable integration
Higher frequency adoption: 100+ MHz crystals for 5G infrastructure
Integrated solutions: Oscillators with built-in frequency modulation
Automotive-grade reliability: AEC-Q100 qualified components for EVs
AI-driven testing: Machine learning for crystal defect detection