7R-31.250MDAQ-T

Crystals Overview

The TXC Corporation 7R-31.250MDAQ-T is a miniature quartz crystal resonator operating at a fundamental frequency of 31.250 MHz. It utilizes a glass-seal package with dimensions of 2.0 mm by 1.6 mm and features four surface-mount pads. The component exhibits a load capacitance of 10 pF and an equivalent series resistance of 120 Ohms. Frequency stability is specified at ±20 ppm within the ambient temperature range of -20°C to +70°C, and ±30 ppm across the extended industrial range.

Crystals Feature Summary

• Ultra-miniature glass-seal construction for high reliability
• Low profile surface-mount design suitable for dense PCB layouts
• High Q-factor characteristics for stable oscillation

Crystals Applications

• Clock generation in digital communication systems
• Timing references for microprocessors and microcontrollers
• Frequency standards in portable electronic devices

Crystals Procurement Notes

Verify the specific suffix codes against official TXC documentation to ensure correct tolerance and packaging specifications. Confirm that the glass-seal variant meets the environmental requirements for the intended application. Cross-reference the pinout and footprint dimensions with the manufacturer's mechanical drawing prior to integration into the design.

Crystals Selection Notes

Select this component when a compact form factor is required alongside precise frequency control. The 10 pF load capacitance must match the oscillator circuit design. Consider the ±20 ppm stability for standard timing applications where tighter tolerances are not necessary. Ensure the operating temperature range aligns with the system's thermal environment.

Crystals Part Context

This part belongs to TXC's ultra-miniature MHz crystal lineup, characterized by thin profiles and low series resistance. It serves as a cost-effective timing solution compared to larger packaged crystals or active oscillators. The glass-seal technology provides superior protection against moisture and contaminants compared to standard epoxy packages.

Crystals Replacement Considerations

Direct substitutes include other 31.250 MHz crystals with identical 2.0x1.6 mm glass-seal footprints and 10 pF load capacitance. Verify that alternative parts maintain the same ESR and stability ratings. Check for compatibility with existing reflow soldering profiles due to the glass-seal construction.