HC-49/U-S4000000ABJB 4 MHz Crystal Oscillator: Precision Timing for Critical Applications

In today's fast-paced electronics industry, reliable timing solutions are more important than ever. The HC-49/U-S4000000ABJB from Citizen Finedevice Co Ltd stands out as a premier choice for engineers and designers seeking a stable 4 MHz frequency reference. This comprehensive guide explores why this crystal oscillator should be your go-to component for precision timing applications.

In-Depth Product Analysis

As part of the Crystals, Oscillators, and Resonators family, the HC-49/U-S4000000ABJB represents the gold standard in fundamental mode crystals. Its active design ensures consistent performance across various operating conditions, making it suitable for both commercial and industrial applications.

Detailed Technical Specifications

Frequency Characteristics

The crystal's 4.000000 MHz fundamental frequency provides the perfect timing reference for:

• 8-bit and 32-bit microcontroller clock circuits
• Serial communication interfaces (UART, SPI, I2C)
• Real-time clock (RTC) modules
• Digital signal processing systems

Enhanced Stability Features

With industry-leading 30ppm frequency tolerance and 50ppm stability, this crystal maintains exceptional accuracy even in challenging environments. The tight tolerance makes it particularly valuable for:

• Wireless communication devices
• Precision measurement equipment
• Medical electronics
• Automotive control systems

Electrical Parameters

The 18pF load capacitance optimizes performance when paired with standard oscillator circuits, while the 150 ESR ensures efficient energy conversion with minimal losses. These parameters contribute to:

• Reduced power consumption
• Improved startup characteristics
• Long-term reliability

Mechanical Design Advantages

Robust Packaging

The HC-49/US through-hole package offers multiple benefits:

• Secure PCB mounting for vibration resistance
• Standardized footprint for easy replacement
• Proven reliability in mass production

Compact Dimensions

Measuring just 11.50mm 4.66mm 3.50mm, the crystal provides an ideal balance between:

• Space efficiency for compact designs
• Sufficient mass for stable oscillation
• Standard size for manufacturing convenience

Extended Application Guide

Beyond typical timing applications, the HC-49/U-S4000000ABJB excels in specialized scenarios:

Industrial Automation

The crystal's -10 C to 60 C operating range makes it suitable for:

• PLC timing circuits
• Motor control systems
• Process monitoring equipment

Consumer Electronics

Proven performance in:

• Smart home devices
• Wearable technology
• Gaming peripherals

Telecommunications

Ideal for:

• Modem timing circuits
• Network interface cards
• RFID systems

Competitive Advantages

When comparing the HC-49/U-S4000000ABJB to alternatives, consider these unique benefits:

Manufacturing Excellence

Citizen Finedevice's proprietary processes ensure:

• Consistent quality across production batches
• Superior aging characteristics
• Reduced defect rates

Design Flexibility

The standard HC-49/US package allows for:

• Easy prototyping
• Simple upgrades to existing designs
• Compatibility with automated assembly

Implementation Best Practices

PCB Layout Recommendations

For optimal performance:

• Keep crystal traces as short as possible
• Maintain proper grounding
• Follow manufacturer's load capacitor guidelines

Environmental Considerations

While the crystal operates within industrial temperature ranges, additional precautions may be needed for:

• High-vibration environments
• Extreme humidity conditions
• EMI-sensitive applications

Purchasing Information

Our company offers:

• Competitive pricing for volume purchases
• Guaranteed authentic Citizen Finedevice products
• Flexible shipping options
• Technical support for integration challenges

For engineers specifying the HC-49/U-S4000000ABJB in new designs, we provide comprehensive documentation including:

• Detailed datasheets
• SPICE models
• Application notes

Conclusion

The HC-49/U-S4000000ABJB 4 MHz crystal oscillator represents an optimal balance of precision, reliability, and value. Whether you're designing consumer electronics, industrial control systems, or communication devices, this crystal delivers the timing accuracy your application demands. With its proven track record in millions of devices worldwide, you can trust the HC-49/U-S4000000ABJB as the foundation of your timing circuitry.

Ready to incorporate this high-performance crystal into your design? Contact our sales team today for pricing and availability, or request samples for your prototyping needs. For technical questions about implementing the HC-49/U-S4000000ABJB in your specific application, our engineering support team stands ready to assist.