18QHTF21-12.187-PD

Overview

The 18QHTF21-12.187-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.187 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Supports standby mode for power reduction
• Compact surface-mount package design
• LVCMOS output interface compatibility

Applications

• Portable consumer electronics
• Battery-powered devices
• Communication equipment timing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout specifications. Check for any RoHS compliance documentation if required for your manufacturing standards. Contact the manufacturer for detailed electrical characteristics not listed in general summaries.

Selection Notes

Select this model when a low-voltage 1.8V operation is required alongside a small form factor. Consider the LVCMOS output level for direct interfacing with compatible digital logic families. Evaluate the standby feature necessity for power-sensitive applications. Compare alternative frequencies within the same series if 12.187 MHz is not strictly necessary. Ensure the operating temperature range meets your environmental conditions.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-power, small-footprint oscillators. The series typically offers various frequencies and supports power-down modes. Mercury Electronics specializes in quartz-based timing components, providing solutions for industrial and consumer markets. The 'PD' suffix indicates the inclusion of a power-down control pin or functionality.

Replacement Considerations

Direct replacements must match the 12.187 MHz frequency, 1.8V supply, and LVCMOS output. Verify pinout compatibility for the 4-SMD no-lead package. Check if the substitute part supports the same standby function. Ensure the replacement maintains similar size constraints (2.0x1.6 mm). Consult official substitution lists from Mercury Electronics for validated alternatives.