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8 MHz Crystal + 20pF capacitors
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This 8.000 MHz crystal comes in a standard HC49/US short-style package and is breadboard-friendly for use with any microcontroller or device that requires an...
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This 8.000 MHz crystal comes in a standard HC49/US short-style package and is breadboard-friendly for use with any microcontroller or device that requires an external crystal. Two 20 pF load capacitors are included.
With 30 PPM tolerance and 50 PPM stability, this crystal is precise enough for high-accuracy applications including USB timing, long-term timekeeping, and RF/PLL/VCO driving.
Key Features
- 8.000 MHz Frequency – Common microcontroller clock speed
- 30 PPM Tolerance – High precision for USB and RF applications
- 50 PPM Stability – Reliable long-term timekeeping
- HC49/US Package – Standard short-style, breadboard friendly
- Symmetric Pins – Either pin can be XTAL-in or XTAL-out
Also Available
- 8 MHz Ceramic Resonator – Simpler option with built-in caps (0.5% accuracy)
Tip: Connect one capacitor from each crystal pin to ground. Check your microcontroller datasheet to confirm whether a 1 MΩ feedback resistor is also needed.
Package Contents
- 1× 8 MHz Crystal (HC49/US)
- 2× 20 pF Capacitors
Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
- RF
- RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
- Tolerance
- Tolerance tells you how far the real resistance value may be from the printed value. A 1% resistor is useful when a circuit needs more predictable behaviour than a looser 5% or 10% part.
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