The load capacitance (CL) is determined by the two capacitors connected to the crystal pins. Use the formula CL = (C1 * C2) / (C1 + C2) + Cstray, where Cstray accounts for PCB trace and pin capacitance.
Quartz Crystals Component Intelligence
Precision frequency control components for stable timing and clock generation.
What are Quartz Crystals components?
Quartz crystals provide the fundamental frequency reference for microcontrollers and RF systems. Selection hinges on matching the crystal's load capacitance to the circuit's oscillator stage, ensuring ESR is within limits for startup, and verifying temperature stability requirements.
How to Choose Quartz Crystals Components
Selecting the right crystal requires balancing electrical performance with physical constraints.
Load Capacitance (CL)
Must match the oscillator circuit's input capacitance to ensure the crystal oscillates at the target frequency.
Frequency Tolerance
Define the allowable deviation at room temperature, typically measured in PPM.
ESR (Equivalent Series Resistance)
Lower ESR improves startup reliability, especially in low-power or high-frequency designs.
Temperature Stability
Crucial for industrial or outdoor applications where frequency drift must be minimized over temperature.
Package Size
Balance PCB footprint constraints with the physical robustness required for your assembly process.
Popular Quartz Crystals Components
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