25 MHz Quartz Crystal Oscillator HC-49S ⏱️

The quartz crystal oscillator is a widely used electronics component for accurate timing in digital and RF circuits. Packaged in a compact 2‑pin through-hole can, this resonator provides a stable clock reference for microcontrollers, communication modules, and general-purpose timing applications.

🔧 Product Overview

Unlike active oscillator modules, this is a passive quartz crystal that works with an external oscillator circuit. When paired with the correct load capacitors, it generates a highly stable clock signal. Available in a broad range of frequencies, these crystals are staples in Arduino, Raspberry Pi, custom modules, and embedded systems.

✨ Key Features & Benefits

• Precise reference for timing and clock generation.
• High frequency stability for reliable operation in digital and RF designs.
• Compact 2‑pin through-hole package for easy PCB or breadboard prototyping.
• Cost-effective timing solution for microcontrollers and logic circuits.
• Industry-standard form factor with wide ecosystem support.

📐 Technical Specifications

• Type: Quartz crystal resonator (passive; requires oscillator circuit)
• Frequency: Variable depending on part
• Package: 2‑pin through-hole (THT)
• Marking: Labeled with frequency value
• Electrical parameters: Load capacitance, tolerance, stability, and drive level per manufacturer datasheet

📡 Applications

• Microcontroller clocks and timing sources.
• Communication equipment and RF modules.
• Embedded systems and digital logic timing.
• Computers, instrumentation, industrial automation, and medical electronics.

🧰 Integration Notes

• Connect to oscillator pins of MCU or logic IC with recommended load capacitors.
• Compatible with 3.3 V and 5 V logic, depending on circuit requirements.
• Ideal for Arduino, Raspberry Pi, custom boards, shields, and HATs.
• Ensure oscillator circuit meets crystal’s drive and ESR specifications.

✅ Why Choose This Part

Provides stable and precise timing for embedded designs, with a standard footprint for easy sourcing, prototyping, and production.