18QHTF21-39.864-PD

Oscillators Overview

The 18QHTF21-39.864-PD is a quartz crystal resonator manufactured by Mercury Electronics Ind. Co. Ltd, designed for high-frequency applications requiring precise timing stability. This component operates at a fundamental frequency of 39.864 MHz and utilizes a surface-mount technology (SMT) package to facilitate automated assembly processes in compact electronic devices. The device features a parallel resonant mode configuration, ensuring consistent performance across varying temperature ranges typical of consumer and industrial electronics. It incorporates gold-plated electrodes and a hermetically sealed metal can housing to protect the internal quartz element from environmental contaminants while maintaining low equivalent series resistance (ESR). The unit supports standard mounting patterns compatible with common PCB footprints used in modern communication modules.

Oscillators Feature Summary

• Hermetically sealed metal can construction provides robust protection against moisture and mechanical stress
• Gold-plated electrode design ensures reliable electrical contact and long-term corrosion resistance
• Surface-mount compatible form factor enables efficient integration into automated manufacturing workflows
• Parallel resonance operation delivers stable frequency output under standard load conditions

Oscillators Applications

• Wireless communication module clock sources
• Microcontroller system timing references
• Consumer electronics oscillator circuits
• Industrial control board synchronization

Oscillators Procurement Notes

Verify part authenticity through authorized Mercury Electronics distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance status prior to procurement. Ensure storage conditions meet specified humidity and temperature limits to preserve component integrity. Request detailed test reports including frequency tolerance and aging rate data for critical application validation. Cross-reference ordering codes with official Mercury Electronics documentation to avoid substitution errors during supply chain management.

Oscillators Selection Notes

Evaluate thermal stability requirements against the component’s specified operating temperature range before selection. Assess load capacitance compatibility with target oscillator circuit designs to ensure accurate frequency generation. Consider physical dimensions and mounting orientation constraints within the final product enclosure. Review historical reliability data and failure rates associated with similar Mercury Electronics crystal units for risk assessment. Validate supplier certification levels to guarantee consistent quality control throughout the production lifecycle.

Oscillators Part Context

This component belongs to Mercury Electronics’ general-purpose quartz crystal resonator lineup, targeting mid-range frequency applications where moderate stability suffices. It complements higher-end oven-controlled variants by offering cost-effective solutions for non-critical timing needs. The model designation reflects specific packaging and frequency characteristics distinct from other series within the manufacturer’s portfolio. Its design prioritizes manufacturability and ease of integration over extreme precision metrics found in specialized military-grade alternatives.

Oscillators Replacement Considerations

Direct substitutes include Mercury Electronics models sharing identical footprint dimensions and nominal frequency specifications. Verify pinout compatibility and electrical parameters such as ESR and shunt capacitance when evaluating alternative vendors. Ensure replacement parts maintain equivalent sealing standards and material composition to preserve environmental resilience. Consult official Mercury Electronics cross-reference guides for approved equivalents rather than relying on generic industry mappings.