18QHTF21-100.300-PD

Overview

The 18QHTF21-100.300-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 100.3 MHz and utilizes LVCMOS output logic. The device is designed for surface mount assembly in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm. It functions with a supply voltage of 1.8V and includes a standby or power-down control feature to manage power consumption during inactive periods.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby or power-down functionality for energy management
• Designed for surface mount technology in a leadless SMD package

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 100.3 MHz stability
• Embedded devices utilizing low-voltage 1.8V power domains

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system's power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB layout design to guarantee proper soldering and mechanical stability during operation.

Selection Notes

Select this component when a precise 100.3 MHz timing source is required within a constrained physical space. The choice is appropriate for applications demanding low-profile surface mount solutions with integrated power-down capabilities. Consider the LVCMOS output swing limits to ensure compatibility with downstream logic levels without additional buffering.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series typically offers various frequencies within a standardized small outline package format. Mercury Electronics has a long history in manufacturing crystals and oscillators, positioning this component as a standard industrial-grade timing solution.

Replacement Considerations

Direct substitutes must match the 100.3 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications to ensure functional equivalence in the existing circuit design.