18QHTF21-4.190-PD

Oscillators Overview

The 18QHTF21-4.190-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 4.19 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down control feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Integrates standby mode for power reduction
• Provides stable LVCMOS clock signals

Oscillators Applications

• Low-power embedded systems requiring precise timing
• Portable electronic devices utilizing 1.8V logic levels
• Communication modules needing compact oscillator solutions

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 package footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Oscillators Selection Notes

Select this component when a small form factor is critical for space-constrained designs. Choose this model for applications where power consumption must be minimized through standby capabilities. Consider this part for systems operating exclusively at 1.8V logic levels. Evaluate the 4.19 MHz frequency suitability for your specific data transmission or processing needs.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic, a supplier specializing in quartz crystals and oscillators. The series offers various frequencies within a standardized 2.0x1.6mm package. Mercury Electronic has established itself as a pioneer in Taiwan's crystal industry since 1973, providing reliable timing solutions for global electronics markets.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical footprints but different frequencies, such as 18QHTF21-8.0004-PD or 18QHTF21-18.1059-PD, provided the frequency change is acceptable for the application.