8Q-40.000MDDV-T

Crystals Overview

The 8Q-40.000MDDV-T is a surface-mount quartz crystal resonator manufactured by TXC Corporation, operating at a fundamental frequency of 40.000 MHz. It features an 8 pF load capacitance and maintains a frequency tolerance of ±20 ppm within the specified temperature range. The device supports a maximum drive level of 1 mW and exhibits a maximum equivalent series resistance (ESR) of 50 Ohms. Designed for reliability, it operates across a temperature range from -20°C to +70°C and utilizes a compact 4-SMD, no lead package configuration.

Crystals Feature Summary

• High-frequency stability with ±20 ppm tolerance over the operational temperature range
• Robust performance characterized by low equivalent series resistance
• Compact surface-mount design suitable for automated assembly processes

Crystals Applications

• Precision timing circuits in communication equipment
• Clock generation for microprocessors and digital logic systems
• Frequency reference sources in consumer electronics

Crystals Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer confirmation. Ensure that the ordering suffix matches the required packaging quantity and tape specifications. Confirm that the load capacitance aligns with the oscillator circuit design requirements before procurement to prevent frequency deviation issues.

Crystals Selection Notes

Select this component when a 40 MHz reference is required with moderate stability and a narrow industrial temperature range. Consider the 8 pF load capacitance compatibility with the host oscillator circuit. Evaluate the ESR limits against the driving capability of the application circuit to ensure stable oscillation without overdriving the crystal.

Crystals Part Context

This part belongs to the 8Q series of seam-seal quartz crystals from TXC Corporation. These components are engineered for general-purpose timing applications requiring reliable frequency control. The series offers various frequency options and package sizes to support diverse electronic design needs while maintaining consistent manufacturing quality standards.

Crystals Replacement Considerations

Direct substitutes must match the 40.000 MHz frequency, 8 pF load capacitance, and ±20 ppm tolerance. Verify that alternative parts support the same -20°C to +70°C operating range and compatible SMD footprint dimensions to ensure mechanical and electrical interchangeability.