7M40000049

Crystals Overview

The TXC 7M40000049 is a quartz crystal unit designed for frequency control applications. It operates at a fundamental resonant frequency of 4.000 MHz. The component utilizes a standard HC-49/U package configuration, which provides mechanical stability and ease of mounting on printed circuit boards. This specific model is characterized by its precise frequency tolerance and stable oscillation characteristics required for timing circuits.

Crystals Feature Summary

• Provides stable fundamental frequency resonance at 4 MHz
• Utilizes robust HC-49/U package for reliable surface mounting
• Designed for consistent performance in timing and clock generation circuits

Crystals Applications

• Microcontroller clock sources
• Digital logic timing references
• Communication interface synchronization

Crystals Procurement Notes

Verify the exact load capacitance requirements against the target oscillator circuit design to ensure frequency accuracy. Confirm that the operating temperature range specified in the official datasheet aligns with the environmental conditions of the end application. Ensure compatibility with the PCB footprint dimensions associated with the HC-49/U package style before finalizing procurement orders.

Crystals Selection Notes

Select this component when a fundamental mode crystal at 4 MHz is required for cost-effective timing solutions. Consider the package size constraints and the specific load capacitance needs of the host oscillator circuit. Evaluate the thermal stability requirements against the standard specifications provided in the manufacturer's documentation to ensure long-term reliability.

Crystals Part Context

This part belongs to the broader category of through-hole quartz crystals manufactured by TXC Corporation. These components are widely used in consumer electronics and industrial equipment where precise timekeeping or signal generation is necessary. The HC-49/U form factor remains a standard industry choice for general-purpose frequency control due to its availability and established manufacturing processes.

Crystals Replacement Considerations

Consult official cross-reference lists from authorized distributors for direct substitutes. Verify that any alternative part matches the 4 MHz frequency, HC-49/U package, and equivalent electrical parameters such as motional capacitance and resistance.