18QHTF21-18.4323-OE

Oscillators Overview

The Mercury Electronics Ind. Co. Ltd model 18QHTF21-18.4323-OE is a quartz crystal unit designed for oscillator applications. It operates at a fundamental frequency of 18.4323 MHz. The component utilizes an HC-49/US metal can package, providing robust mechanical stability and shielding. Key electrical parameters include a load capacitance typically specified for standard oscillator circuits and a frequency tolerance ensuring precise timing performance. The device supports a maximum drive level suitable for low-power digital systems and maintains stability across the industrial temperature range.

Oscillators Feature Summary

• Fundamental mode quartz resonator operation
• Hermetically sealed metal can construction
• Standardized pin spacing for through-hole mounting

Oscillators Applications

• Microcontroller clock generation
• Digital communication interface timing
• General-purpose oscillator circuits

Oscillators Procurement Notes

Verify the specific load capacitance value required by the target circuit design against the datasheet specifications to ensure frequency accuracy. Confirm that the operating environment remains within the stated temperature limits. Ensure the drive level supplied by the host oscillator does not exceed the maximum rating to prevent frequency drift or damage to the crystal element.

Oscillators Selection Notes

Select this component when a stable, low-cost fundamental frequency source is required for digital logic timing. The HC-49/US package is suitable for high-volume PCB assembly using standard wave or selective soldering processes. Consider thermal stability requirements and available board space before choosing this through-hole format over surface-mount alternatives.

Oscillators Part Context

This part belongs to the family of standard through-hole quartz crystals manufactured for general electronic timing needs. The HC-49/US form factor is widely recognized in the industry for its durability and ease of integration into legacy and modern mixed-signal designs requiring precise clock signals.

Oscillators Replacement Considerations

Substitute with other HC-49/US crystals from manufacturers such as TXC, ECS, or Fox Electronics, provided they match the 18.4323 MHz frequency, load capacitance, and series resistance specifications.