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SJK: High-precision oscillators & filters for global tech industries.

sjk@q-crystal.com+86 755 8835 2869

AI Marketing
Edge Computing 
The core requirements of Edge AI are real-time data processing, low-latency decision-making, and offline operation capability. Crystal oscillators, as the "reference clock," directly determine the computational accuracy and communication stability of the device.
Application Scenarios and Products 
1
Edge Computing Gateway (localized data processing, small servers, data fusion platforms)
Used with FPGA, TPU, and optical module DSP. Products used: Differential oscillators 100MHz, 125MHz, 156.25MHz, 200MHz. Passive crystals 25MHz, 24MHz. Real-time clock crystals: 32.768KHz
2
Wireless Sensor Nodes (real-time environmental data collection and AI analysis, e.g., smart agriculture, forest fire prevention)
Used with sensors and RF transceiver functions. Products used: Passive crystals: 25MHz, 27.12MHz, 26MHz, etc.
3
Terminal Devices, Intelligent Surveillance Cameras (AI image recognition, e.g., face detection, abnormal behavior analysis)
Used with terminal intelligent visual processors, video transmission, etc. Products used: Passive/active crystals: 27MHz, 25MHz, 24MHz, 32MHz, etc.
Role of Crystal Oscillators 
Ensures consistency in sensor data collection, AI inference operations, and inter-device communication timing, reducing recognition errors caused by data misalignment.
Supports rapid switching between "sleep - wake" modes, suitable for battery-powered scenarios (e.g., field sensors).
Provides stable reference clock for edge processors (e.g., FPGA, edge AI chips, DSP in optical modules), ensuring accuracy in million-level data operations per second.
Common Crystal Oscillator Types and Features
Crystal Oscillator Type
Model Reference Core Features Application Requirements
SMD Crystal (XTAL) 7U, 7E, 7F, 7Y 7K, 7R, 7L, etc.
Small size (3.2×2.5~1.6×1.2mm), low ESR for low power consumption, high stability (±10ppm)
Sensor nodes, portable terminal devices
HCMOS Clock Oscillator (XO) 3N, 2N, 1N, 0N MEMS Wide output frequency range (1MHz~200MHz), strong voltage compatibility (1.8V~3.3V), low EMI, low jitter, high temperature stability (±25ppm @-40~85℃) Edge gateways, medium-low load AI computing
Differential Oscillator 3J/3D/3H 2J/2D/2H Excellent high-frequency stability (±25ppm @ -40~85℃), ultra-low jitter <100fs, small package (minimum 2520 size) Edge gateways, high-load AI inference devices, data fusion platforms, etc.
Intelligent Automotive AI Field 
The core requirements of Intelligent Automotive AI are high reliability, real-time response, and multi-device collaboration. Crystal oscillators must meet automotive-grade temperature, vibration, and reliability standards.
Application Scenarios and Products 
1
Autonomous Driving Systems (L2-L4 levels)
LiDAR, radar, camera multi-sensor fusion AI decision-making
2
Intelligent Cockpit
AI voice interaction, gesture control, personalized scene recommendations.
3
V2X (Vehicle-to-Everything)
AI communication decisions between vehicles and roadside devices (e.g., collision warning)
4
Child Presence Detection (CPD)
AI infrared/ultrasonic detection to prevent children from being left in the vehicle
Role of Crystal Oscillators 
Ensures LiDAR point cloud data, camera images, and radar signals are aligned on the same timeline, avoiding AI misjudgments and timeline disruptions.
Maintains frequency stability in wide temperature range (-40℃~125℃), preventing AI system crashes due to extreme temperatures.
Provides precise reference frequency for wireless transceiver modules, ensuring millisecond-level response for AI decisions.
Common Crystal Oscillator Types and Features
Crystal Oscillator Type
Model Reference Core Features Application Requirements
SMD Crystal (XTAL) 7U, 7E, 7F, 7Y 7K, 7R, 7L, etc
Small size (3.2×2.5~1.6×1.2mm), low ESR for low power consumption, high stability (±10ppm)
Vehicle sensor nodes, body AI control units
GLASS Sealed Crystal 7Z, 7V, 6I, etc. Poor thermal conductivity, hard top cover that does not deform, good high-temperature resistance, supports PCB potting process One-key ignition switch, central control panel, motor control board
HCMOS Clock Oscillator (XO) 3N, 2N, 1N, 0N Wide output frequency range (1MHz~200MHz), strong voltage compatibility (1.8V~3.3V), low EMI, low jitter, high temperature stability (±25ppm -40~85℃) Vehicle sensor nodes, body AI control units, AI processors, etc.
Temperature Compensated Crystal Oscillator (TCXO) 7X, 7Q, 8W, 5T, etc. Extremely high wide-temperature stability (±0.5ppm@-40℃~85℃), low voltage (1.8V), clipped sine wave and CMOS output optional Positioning modules, V2X modules
MEMS Oscillator Programmable MEMS Oscillator High stability (total frequency deviation ±25ppm@-40℃~85℃), low jitter (within 1ps), extremely strong shock resistance (60000G impact) System main control board
Industrial AI Internet of Things (IIoT) Field 
The core requirements of Industrial AI are high stability, anti-interference capability, and long-cycle operation. Crystal oscillators need to adapt to industrial-grade harsh environments (e.g., high temperature, high electromagnetic interference).
Application Scenarios and Products 
1
Predictive Maintenance of Industrial Equipment
AI vibration analysis (e.g., motor fault detection), temperature anomaly warning
2
Intelligent Assembly Line
AI visual quality inspection (e.g., product defect identification), robot collaborative operations
3
Energy AI Monitoring
Grid load AI prediction, photovoltaic panel efficiency intelligent optimization
4
High-Voltage Power Detection
Detecting waveform distortion, voltage fluctuations, and three-phase imbalance in the power grid, etc., power quality issues
5
Robots
Embodied robots, precise motor control for robotic arms.
Role of Crystal Oscillators 
Provides high-precision clock for industrial AI chips, ensuring no distortion in collected vibration and temperature data from sensors, improving AI fault diagnosis accuracy
Counters electromagnetic interference in industrial environments (e.g., EMI from motors and inverters), preventing clock signal distortion leading to AI misjudgments
Reduces crystal oscillator frequency drift, lowering downtime risks due to clock deviations in industrial equipment (e.g., assembly line stalls)
Common Crystal Oscillator Types and Features
Crystal Oscillator Type
Model Reference Core Features Application Requirements
Low EMI Oscillator (Spread Spectrum Crystal Oscillator) Custom
Low electromagnetic radiation, frequency stability (±20ppm), wide voltage adaptation
Industrial AI quality inspection equipment, motor monitoring nodes
MD Crystal (XTAL) 7U, 7E, 7F, 7Y 7K, 7R, 7L, etc. High temperature resistance (125℃), moisture resistance, low cost Energy monitoring sensors, low-end AI detection equipment
Oven-Controlled Crystal Oscillator (OCXO) 1X, 9X, 2X, etc. Extremely high stability (supports ppb-level frequency stability), strong anti-interference, minimal temperature influence High-voltage power detection
Consumer-Grade AI Device Field 
The core requirements of Consumer-Grade AI are miniaturization, low power consumption, and low cost. Crystal oscillators need to balance performance and user experience (e.g., battery life, portability).
Application Scenarios and Products
1
Wearable Devices
AI health monitoring (e.g., smart watches, AI glasses, smart rings, smart mattresses, sleep quality AI assessment)
2
Smart Home Devices
AI voice assistants (e.g., smart speakers), AI scene linkage (e.g., intelligent lighting automatic adjustment)
3
AR/VR Devices
AI spatial positioning, gesture recognition, real-time rendering optimization
Role of Crystal Oscillators 
Supports long-term standby (e.g., smart watch battery life 14 days+), quick wake-up during AI computation, significantly reducing power consumption by minimizing signal transmission wait times.
Small-sized crystals meet the thin and light design needs of wearable devices (e.g., 1.6×1.2mm SMD crystal, 1.6×1.0mm tuning fork)
Provides clock for Bluetooth and Wi-Fi modules, ensuring no delay in AI voice command transmission (e.g., smart speaker response)
Common Crystal Oscillator Types and Features
Crystal Oscillator Type
Model Reference Core Features Application Requirements
Miniature SMD Crystal
7U, 7E, 7F, 7Y 7K, 7R, 7L, etc.
Ultra-small size, ultra-low power consumption, easy oscillation startup, low cost
Wearable devices, small smart home sensors
HCMOS Clock Oscillator (XO)
3N, 2N, 1N, 0N
Low voltage (1.8V), frequency accuracy (±25ppm), fast startup (ms)
Smart watches, AR/VR devices
Clipped Sine Wave TCXO
7X, 7Q, 8W
Low power consumption, high stability (±0.5ppm), small package
High-end smart bracelets (e.g., medical-grade health monitoring) and positioning modules
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Founded in 1989, SJK specializes in the manufacturing of crystal resonators and oscillators. With extensive experience in miniaturization, high precision, and low power consumption, our components are widely used across multiple industries.
Contact Us
Contact person: SJK
Tel: +86 755 8835 2869
Email: sjk@q-crystal.com
Add: 12/F, Building 3C, TianAn Cloud Park Phase 1, Bantian, Longgang District, Shenzhen, 518129, China
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