7M-31.250MDDE-T

Crystals Overview

The 7M-31.250MDDE-T is a surface-mount quartz crystal manufactured by TXC Corporation, designed for precision frequency generation in electronic circuits. It operates at a nominal frequency of 31.25 MHz with a frequency stability and tolerance of ±20 ppm across the specified temperature range. The component utilizes a seam seal package configuration measuring 3.2 mm x 2.5 mm, featuring four solder pads without leads. It supports a load capacitance of 12 pF and exhibits a maximum equivalent series resistance of 60 Ohms. The device is rated for operation between -20°C and +70°C, ensuring reliable performance in standard commercial environments.

Crystals Feature Summary

• Seam seal construction provides environmental protection and mechanical stability for surface-mount applications
• High frequency stability of ±20 ppm ensures precise timing accuracy
• Compact 3.2 mm x 2.5 mm footprint facilitates dense circuit board layouts

Crystals Applications

• Clock signal generation for digital communication interfaces
• Frequency reference sources for microcontroller systems
• Timing components in consumer electronics devices

Crystals Procurement Notes

Verify the specific ordering suffix to confirm package type and frequency parameters match design requirements. Ensure compatibility with reflow soldering profiles suitable for seam seal packages. Confirm availability through authorized distributors as lead times may vary. Cross-reference datasheet specifications for load capacitance and ESR limits before integration.

Crystals Selection Notes

Select this component when a 31.25 MHz reference with ±20 ppm stability is required in a small surface-mount form factor. Consider the -20°C to +70°C operating range against environmental conditions. Evaluate the 12 pF load capacitance requirement against the oscillator circuit design. Compare ESR specifications with driver strength capabilities to ensure proper oscillation startup.

Crystals Part Context

This part belongs to the TXC Corporation line of ultra-miniature MHz crystals, characterized by thin profiles and low series resistance. These components are engineered for high accuracy and extremely low aging rates. The product family emphasizes high Q factors and low phase noise, making them suitable for demanding timing applications where size constraints and signal integrity are critical priorities.

Crystals Replacement Considerations

The 7V-31.250MDDE-T is a related variant within the same manufacturer portfolio. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure the replacement part meets identical frequency stability and package dimension requirements.