18QHTF21-3.950-PD

Oscillators Overview

The 18QHTF21-3.950-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 3.95 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down standby function to reduce consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component supports an operating temperature range suitable for commercial applications.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V for energy efficiency
• Includes power-down standby mode to minimize current draw
• Provides stable LVCMOS output signals for digital interfaces
• Utilizes a small surface-mount package for space-constrained designs

Oscillators Applications

• Portable electronic devices requiring low power consumption
• Battery-operated systems needing extended runtime
• Digital communication equipment utilizing standard clock signals
• Embedded systems with limited board space

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's specifications. Confirm that the 4-SMD package footprint matches your PCB layout constraints. Check for any specific handling instructions regarding ESD sensitivity during assembly processes.

Oscillators Selection Notes

Select this model when a precise 3.95 MHz clock source is required for low-power applications. Consider the 1.8V supply constraint and LVCMOS compatibility with your target logic family. Evaluate the thermal performance within the specified operating temperature range. Compare the physical dimensions against available board real estate to ensure proper fitment.

Oscillators Part Context

This component belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series offers various frequencies and voltage options. The 'PD' suffix typically indicates a power-down feature. Mercury Electronics specializes in frequency control products including crystals and oscillators.

Oscillators Replacement Considerations

Direct substitutes must match the 3.95 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics. Consult manufacturer cross-reference lists for approved alternatives.