18QHTF21-6.870-OE

Overview

The Mercury Electronics 18QHTF21-6.870-OE is a quartz crystal unit designed for frequency control applications. It operates at a fundamental resonant frequency of 6.870 MHz. The component utilizes a through-hole mounting configuration with a specific package style suitable for standard PCB assembly processes. Electrical characteristics include defined load capacitance and equivalent series resistance parameters typical for this class of oscillator components, ensuring stable performance in timing circuits.

Feature Summary

• Provides precise frequency stability for electronic timing circuits
• Utilizes fundamental mode resonance for accurate oscillation
• Designed for reliable operation in standard industrial environments

Applications

• Microcontroller clock sources
• Communication equipment timing references
• Industrial control system oscillators

Procurement Notes

Verify the exact load capacitance requirements against your circuit design before procurement. Confirm that the operating temperature range specified in the official datasheet aligns with your application environment. Ensure compatibility with your manufacturing process regarding lead form and spacing dimensions to prevent assembly issues.

Selection Notes

Select this component when a fundamental frequency near 6.870 MHz is required. Consider the physical size constraints and mounting orientation relative to other board components. Evaluate the drive level specifications to ensure the driving circuit does not exceed the crystal's power handling limits, which could affect longevity or frequency stability.

Part Context

This part belongs to Mercury Electronics' line of general-purpose quartz crystals. These components are commonly used in consumer electronics and industrial devices where cost-effective frequency generation is needed. The model number indicates specific electrical and mechanical attributes distinct from other variants in the product family.

Replacement Considerations

Direct substitutes must match the 6.870 MHz frequency and compatible package dimensions. Verify equivalent electrical parameters such as ESR and load capacitance. Check manufacturer-specific tolerances and aging rates to ensure no degradation in system performance occurs during replacement.