18QHTF21-12.1732-PD

Overview

The 18QHTF21-12.1732-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 12.1732 MHz. The device utilizes a HC-49/U package configuration, which is a standard through-hole housing for this class of components. Electrical characteristics include a load capacitance specification and frequency tolerance values defined by the manufacturer's datasheet for this specific part number. The unit is designed to provide stable clock signals for electronic circuits requiring precise timing references.

Feature Summary

• Provides stable oscillation at a fundamental frequency of 12.1732 MHz
• Utilizes a standard HC-49/U through-hole package for mounting
• Designed for precision timing applications in electronic circuits

Applications

• Clock signal generation for microprocessors
• Timing reference for communication interfaces
• Oscillator circuits in consumer electronics

Procurement Notes

Verify the exact electrical specifications, including load capacitance and frequency stability, against the official Mercury Electronics datasheet for part 18QHTF21-12.1732-PD before integration. Ensure the HC-49/U package dimensions match the PCB footprint requirements. Confirm that the operating temperature range meets the environmental conditions of the final application. Cross-reference the ordering code with the manufacturer's current product list to ensure availability and correct identification.

Selection Notes

Select this component when a fundamental mode crystal oscillator at 12.1732 MHz is required. The HC-49/U package suits designs needing through-hole mounting. Consider the specific load capacitance and tolerance requirements of the host circuitry. Verify compatibility with the driving circuit's impedance and power consumption limits. Ensure the frequency stability meets the system's timing accuracy needs.

Part Context

This part belongs to the series of fundamental mode crystal oscillators produced by Mercury Electronics. The model number encodes the frequency and package type. Similar parts in the lineup may offer different frequencies or package styles but share similar operational principles. The HC-49/U package is widely used in industrial and commercial applications due to its robustness and standardized dimensions.

Replacement Considerations

Check for direct substitutes from Mercury Electronics with identical frequency and package. Other manufacturers offering HC-49/U crystals at 12.1732 MHz may be compatible if electrical parameters match. Verify pin compatibility and loading capacitance requirements before substitution.