18QHTF21-40.950-PD

Oscillators Overview

The 18QHTF21-40.950-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 40.95 MHz and utilizes LVCMOS output logic. The device is designed for low-power applications, featuring a supply voltage of 1.8V and an integrated standby or power-down function to reduce energy consumption during idle periods. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm, suitable for space-constrained surface-mount designs.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode for power reduction
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Embedded systems requiring precise clock signals
• Portable electronic devices needing low power consumption
• Communication modules utilizing standard frequency references

Oscillators 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 PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure component reliability.

Oscillators Selection Notes

Select this component when a stable 40.95 MHz reference is required in a minimal form factor. The LVCMOS output is appropriate for direct connection to digital logic inputs without additional buffering. Consider the power-down feature if battery life or thermal management is a critical constraint in the final product design.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal oscillators. The series offers various frequencies within a standardized small outline package. Mercury Electronics is a established manufacturer with decades of experience in frequency control products, providing reliable timing solutions for global electronics markets.

Oscillators Replacement Considerations

Direct replacements must match the 40.95 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package size. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications to ensure seamless integration into existing designs.