32.768 kHz Crystal Oscillator — JU-26 Series⏱️

The JU-26 Series 32.768 kHz Quartz Crystal Oscillator is a precision frequency control component designed for real-time clock (RTC)low-power timing applications. Its high-stability quartz element delivers accurate, consistent oscillation over time and temperature, making it ideal for microcontroller-based designs, Arduino projects, Raspberry Pi RTC modules, and embedded electronics components where dependable timing is essential.

🔍 Key Features

• 📏 Standard 32.768 kHz watch crystal frequency for RTC applications
• 🧩 JU-26 DIP through-hole package for easy prototyping and assembly
• ⏱️ Frequency tolerance: ±20 ppm for precise timekeeping
• ⚡ Load capacitance: 12.5 pF (typical)
• 🔌 Maximum resistance (ESR): 35 kΩ
• ✅ Excellent long-term stability for reliable operation

📐 Mechanical Dimensions

6.0 × 2.0 mm cylindrical can (compact, through-hole 2‑lead form factor)

📊 Typical Applications

• 🕒 Real-Time Clock (RTC) modules (e.g., DS1307, PCF8523-based designs)
• 💻 Microcontroller timing circuits for AVR, ARM, and low-power MCUs
• 📡 Low-power embedded systems and IoT nodes
• 📱 Wearable electronics requiring ultra-low-power timekeeping
• 🔋 Battery-powered devices where stability and low current are critical

🧠 Compatibility & Integration

This crystal integrates seamlessly with Arduino and other microcontroller platforms, as well as Raspberry Pi RTC modules and HATs. Use it with RTC ICs or MCU RTC pins that specify a 12.5 pF load capacitance. Suitable for both 3.3 V and 5 V logic systems (the crystal is passive and not voltage‑rated, but is driven by the host oscillator circuit).

🛠️ Design Tips

• 📐 Match the 12.5 pF load capacitance using two capacitors to ground; account for PCB and pin capacitance when calculating values.
• 🧭 Place the crystal close to the MCU/RTC pins; keep traces short and symmetric to reduce noise and stray capacitance.
• 🧰 Avoid routing near high-speed or high-voltage signals; provide a clean ground reference for best frequency stability.

📦 Package Includes

• 1 × 32.768 kHz JU-26 Crystal Oscillator

✅ Summary

The JU-26 Series offers a compact, accurate, and energy-efficient timing solution for RTCs and low-power designs. It’s a dependable choice for engineers and hobbyists building Arduino projects, Raspberry Pi RTC add-ons, and precision electronics modules requiring stable 32.768 kHz oscillation.