0132M4-21.705F20DTNJK
Model
0132M4-21.705F20DTNJK
Category
The C20499874 is a precision surface mount crystal designed for 21.705MHz timing applications, offering ±30ppm frequency stability and 20pF load capacitance in a 4-lead SMD3225-4P package. It supports -40℃ to +85℃ operation with soldering profiles up to 350℃. Ideal for communication devices and consumer electronics requiring stable clock generation, but limited to specific frequency requirements.
Reference Pricing
Reference Stock
Specifications
| Frequency Accuracy | ±10ppm / ±20ppm / ±30ppm |
| Load Capacitance | 3.0pF |
| Load Resistance | Please specify |
| Operating Temperature Range | -20 to +70°C |
| Package Type | SMD3225-4P |
| Quality Factor | Please specify |
| Resonant Frequency | 21.705MHz |
| Temperature Coefficient | ±10ppm/°C |
Function And Role
Core Function
High-precision frequency generation for electronic circuits
Key Characteristics
- 21.705MHz frequency
- 20pF load capacitance
- ±10ppm frequency tolerance at room temperature
- ±30ppm frequency stability
- SMD3225-4P surface mount package
Application Domains
Basic Scenarios
- Wireless communication devices
- Consumer electronics (IoT, GPS)
- Industrial timing systems
Extended Scenarios
- Medical devices requiring stable timing
- Automotive CAN bus systems
- High-precision sensor networks
Precautions
| Soldering | Use 300-350℃ reflow soldering with 20-30s peak time to prevent package cracking |
| Current Limit | Max operating current: 50mA continuous |
| Voltage Limit | Absolute maximum voltage: 4.5V |
| Thermal Management | operating temperature range: -40℃ to +85℃ |
| Storage | Store in dry environments below 30℃ with anti-static packaging |
| Risk Warnings |
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Alternative Model Params
- Frequency tolerance (ppm)
- Load capacitance (pF)
- Package dimensions (mm)
- Operating temperature range (℃)
Design Recommendations
| Layout | Maintain 5mm trace length between crystal pins and ground plane |
| Thermal | Use 0.3mm thick copper for heat dissipation in high-power applications |
| Compatibility | Optimal for 4-layer PCB designs with strict impedance control |
| Testing | Perform frequency stability testing at 25℃ and 85℃ extremes |
Market Positioning
| Strengths |
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| Weaknesses |
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