18QHTF21-12.500-OE

Overview

The Mercury Electronics 18QHTF21-12.500-OE is a quartz crystal resonator operating at a fundamental frequency of 12.5 MHz. It utilizes a surface-mount package designed for automated assembly processes, ensuring consistent placement accuracy in high-volume manufacturing environments. The component features a specified load capacitance and equivalent series resistance values defined by the manufacturer's standard specifications for this series. These electrical characteristics ensure stable oscillation within compatible oscillator circuits, providing reliable timing signals for digital systems requiring precise clock references.

Feature Summary

• Fundamental mode operation for stable frequency generation
• Surface-mount design optimized for automated pick-and-place assembly
• Standardized electrical parameters for oscillator circuit compatibility

Applications

• General-purpose digital clock signal generation
• Microcontroller system timing references
• Communication interface synchronization

Procurement Notes

Verify the exact load capacitance and ESR requirements against your specific oscillator circuit design before procurement. Ensure the selected variant matches the required tolerance and stability specifications for your application environment. Confirm that the surface-mount footprint aligns with your PCB layout guidelines to prevent assembly issues during production.

Selection Notes

Select this component when a fundamental mode crystal is required for 12.5 MHz applications. Consider the package size constraints and thermal management requirements of your design. Evaluate the impact of load capacitance variations on overall system timing accuracy. Compare alternative packages if space limitations or mounting preferences differ from standard surface-mount configurations.

Part Context

This part belongs to Mercury Electronics' range of surface-mount quartz crystals. The series offers various frequencies and package options to suit different electronic design needs. Components in this line are manufactured to meet industry standards for frequency stability and reliability. They serve as critical timing elements in a wide array of consumer and industrial electronic devices.

Replacement Considerations

Direct substitutes must match the 12.5 MHz frequency, fundamental mode operation, and identical physical footprint. Verify that replacement components offer equivalent load capacitance and ESR values to maintain circuit performance. Cross-reference pinout and marking codes to ensure correct orientation and identification during assembly.