18QHTF21-51.800-PD

Overview

The 18QHTF21-51.800-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a fixed frequency of 51.8 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage of 1.8V and a standby mode with power-down capability to minimize energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly processes. The component supports an operating temperature range typical for commercial grade electronic timing solutions.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode with power-down functionality for energy efficiency
• Utilizes a 4-SMD no-lead surface mount package design

Applications

• Battery-powered portable devices requiring low current consumption
• Digital communication systems utilizing standard clock signals
• Embedded control circuits needing precise timing references

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 footprint matches your PCB layout constraints. Check for any specific RoHS compliance documentation if required by your manufacturing standards. Contact the manufacturer or authorized distributor for detailed electrical specifications not covered in general summaries.

Selection Notes

Select this component when a 51.8 MHz clock signal is required with LVCMOS outputs. Consider the 1.8V supply voltage constraint and the availability of a power-down feature for power management strategies. Evaluate the physical size of the 4-SMD package against available board space. Compare performance metrics such as jitter and stability if high-precision timing is critical for the application.

Part Context

Mercury Electronic Ind. Co., Ltd. is a Taiwan-based manufacturer specializing in frequency control products, including quartz crystals, oscillators, and filters. The company has a long history in the industry, focusing on providing reliable timing solutions for various electronic applications. This oscillator is part of their broader portfolio of standard XO components designed for mass production and integration into consumer and industrial electronics.

Replacement Considerations

Direct substitutes may include other 51.8 MHz LVCMOS oscillators from different manufacturers with compatible pinouts and voltage levels. Verify equivalent electrical parameters such as supply current and output swing. Ensure the replacement package matches the 4-SMD no-lead form factor for seamless PCB integration.