A-1.8432-13

Crystals Overview

The Raltron A-1.8432-13 is a fundamental frequency quartz crystal resonator designed for surface-mount applications. It operates at a nominal frequency of 1.8432 MHz with a load capacitance of 13 pF and an equivalent series resistance (ESR) of 700 Ohms maximum. The component features a frequency tolerance of ±30 ppm at 25°C and an annual aging rate of ±5 ppm. It supports a drive level up to 1 mW and functions within a temperature range of -10°C to +60°C. The device utilizes an HC-49/U package style, ensuring compatibility with standard industrial assembly processes.

Crystals Feature Summary

• Fundamental mode oscillation ensures reliable startup without harmonic complications
• Low ESR specification allows direct driving by common microcontroller internal oscillators
• RoHS compliant construction meets environmental standards for global deployment

Crystals Applications

• UART serial communication interfaces requiring precise baud rate generation
• Microcontroller system clock sources for low-power embedded nodes
• Industrial sensor data acquisition modules

Crystals Procurement Notes

Verify the specific load capacitance requirement against the target circuit design before procurement. Confirm that the 13 pF load capacitance aligns with the host oscillator circuit's stray capacitance calculations to prevent frequency drift. Ensure the selected variant matches the required surface-mount package dimensions and thermal specifications for the intended manufacturing process.

Crystals Selection Notes

Select this component when a stable 1.8432 MHz reference is needed for UART communication to eliminate baud rate errors. Consider the 13 pF load capacitance carefully; mismatched external capacitors will cause significant frequency deviation. Evaluate the ±30 ppm tolerance against the system's timing budget, as it is suitable for most standard digital interfaces but may require tighter stability for high-precision wireless protocols.

Crystals Part Context

This part belongs to Raltron's line of fundamental quartz crystals, optimized for cost-effective industrial applications. The 1.8432 MHz frequency is specifically chosen for its mathematical relationship with common baud rates, making it a standard choice for serial data transmission systems where timing accuracy is critical for data integrity.

Crystals Replacement Considerations

Direct substitutes must match the 1.8432 MHz frequency, 13 pF load capacitance, and HC-49/U form factor. Verify that alternative components offer comparable ESR limits and aging rates to maintain system timing performance. Cross-reference pinout and mounting dimensions to ensure mechanical compatibility during reflow soldering.