Crystals

Part Number	Description / PDF	Quantity
NX3225GD-8MHZ-EXS00A-CG04874 NDK	CRYSTAL 8.0000MHZ 8PF SMD	0
NX3225SA-12.288M-STD-CSR-3 NDK	CRYSTAL 12.2880MHZ 8PF SMD	0
NX3225SA-14.31818M-STD-CSR-1 NDK	CRYSTAL 14.31818MHZ 8PF SMD	1935
NX3225SC-18.08M-STD-CRS-1 NDK	CRYSTAL 18.0800MHZ 8PF SMD	0
NX3225SA-26MHZ-EXS00A-CS08035 NDK	CRYSTAL 26.0000MHZ 10PF SMD	472
NX1255GB-24.000000MHZ NDK	CRYSTAL 24.0000MHZ 12PF SMD	0
NX5032GA -13.56M-STD-CSU-2 NDK	CRYSTAL 13.5600MHZ 8PF SMD	0
NX1255GB-4.000000MHZ NDK	CRYSTAL 4.0000MHZ 12PF SMD	2139
NX3225SA-32MHZ-EXS00A-CS02368 NDK	CRYSTAL 32.0000MHZ 9PF SMD	0
NX3225GA-12.288M-STD-CRG-2 NDK	CRYSTAL 12.2880MHZ 8PF SMD	2885
NX3225SA-25.000M-STD-CSR-3 NDK	CRYSTAL 25.0000MHZ 8PF SMD	0
NX2016SA-28.63636M-EXS00A-CS08741 NDK	CRYSTAL 28.63636MHZ 30PF SMD	0
NX2520SA-26MHZ-STD-CSX-1 NDK	CRYSTAL 26.0000MHZ 8PF SMD	9019
NX3215SA-32.768K-STD-MUA-8 NDK	CRYSTAL 32.7680KHZ 12.5PF SMD	0
NX8045GB-32.000000MHZ NDK	CRYSTAL 32.0000MHZ 8PF SMD	0
NX8045GB-20.000M-STD-CSF-4 NDK	CRYSTAL 20.0000MHZ 8PF SMD	0
NX2016SA-26MHZ-EXS00A-CS07225 NDK	CRYSTAL 26.0000MHZ 8PF SMD	1040
NX2016SA-50MHZ-EXS00A-CS08483 NDK	CRYSTAL 50.0000MHZ 8PF SMD	3000
NX2016SA-52MHZ-EXS00A-CS07103 NDK	CRYSTAL 52.0000MHZ 10PF SMD	7326
NX3225SA-24.000M-STD-CSR-3 NDK	CRYSTAL 24.0000MHZ 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