Crystals

Part Number	Description / PDF	Quantity
WTL2T60381VH Space Coast Electronics	CRYSTAL 32.7680KHZ 12.5PF TH	3000
WTL5G60489VH Space Coast Electronics	TG5,24.000MHZ,18PF, 20/30 (-20~7	90
WTL2M60417VH Space Coast Electronics	CRYSTAL 24.0000MHZ 8PF SMD	4000
WTL3M60556VH Space Coast Electronics	CRYSTAL 32.0000MHZ 12PF SMD	3000
WTL2T60382VH Space Coast Electronics	CRYSTAL 32.7680KHZ 6PF TH	2000
WTL9S60560VH Space Coast Electronics	CRYSTAL 25.0000MHZ 20PF TH	1000
WTL1M60551VH Space Coast Electronics	CRYSTAL 25.0000MHZ 12PF SMD	3000
WTL3X60386VH Space Coast Electronics	32.768KHZ 8X3.8MM PLASTIC MOLDED	3000
WTL5G60393VH Space Coast Electronics	CRYSTAL 16.0000MHZ 18PF SMD	0
WTL3M60406VH Space Coast Electronics	CRYSTAL 48.0000MHZ 18PF SMD	0
WTL9S60558VH Space Coast Electronics	CRYSTAL 12.0000MHZ 20PF TH	1000
WTL8V012 Space Coast Electronics	CRYSTAL 32.7680KHZ 12.5PF SMD	0
WTL5G60463VH Space Coast Electronics	CRYSTAL 27.1200MHZ 12PF SMD	0
WTL3M60402VH Space Coast Electronics	CRYSTAL 12.0000MHZ 18PF SMD	0
WTL1W60567VH Space Coast Electronics	CRYSTAL 32.7680KHZ 7PF SMD	0
WTL9M60563VH Space Coast Electronics	CRYSTAL 16.0000MHZ 20PF SMD	1000
WTL3M60689VH Space Coast Electronics	CRYSTAL 16.000 MHZ 9PF SMD	0
WTL2M60414VH Space Coast Electronics	CRYSTAL 19.2000MHZ 8PF SMD	0
WTL4M60664VH Space Coast Electronics	1.2*1.0/4/SMD,48.000MHZ,FUND,8PF	100
WTL5G60390VH Space Coast Electronics	CRYSTAL 8.0000MHZ 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