18QHTF21-4.9995-OE

Oscillators Overview

The 18QHTF21-4.9995-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a nominal frequency of 4.9995 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications. The component supports an operating temperature range of -40°C to +85°C and maintains frequency stability within ±50ppm under specified conditions.

Oscillators Feature Summary

• LVCMOS output interface
• Enable/Disable control function
• Compact 4-SMD No Lead package

Oscillators Applications

• Embedded systems requiring precise clock signals
• Consumer electronics with low voltage requirements
• Industrial control modules

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. 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 reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly and long-term performance.

Oscillators Selection Notes

Select this model when a low-voltage 1.8V operation is required alongside standard LVCMOS compatibility. The enable/disable feature makes it suitable for battery-powered devices needing power efficiency. Consider the ±50ppm stability if high precision is not critical. Verify that the -40°C to +85°C industrial temperature range meets your environmental specifications. Compare package dimensions against available board space.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The 'OE' suffix often denotes specific packaging or tape-and-reel configurations, though exact details should be confirmed via datasheets. Mercury Electronics specializes in quartz-based frequency control products, leveraging decades of manufacturing expertise in Taiwan.

Oscillators Replacement Considerations

Direct replacements must match the 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Frequency must be identical or compatible with the application timing requirements. Verify pinout compatibility and thermal characteristics. Consult official substitution lists from Mercury Electronics or authorized distributors for validated cross-reference parts.