7R-25.000MDDQ-T

Crystals Overview

The 7R-25.000MDDQ-T is a surface-mount quartz crystal manufactured by TXC Corporation, designed for precision timing applications. It operates at a fundamental frequency of 25 MHz with a load capacitance of 10 pF and an equivalent series resistance of 60 Ohms. The component provides a frequency stability of ±20 ppm at 25°C and ±20 ppm across the industrial temperature range of -20°C to +70°C. Housed in a compact 4-SMD, no-lead package measuring 2.0 mm by 1.6 mm with a height of 0.6 mm, it utilizes glass sealing technology for enhanced environmental protection.

Crystals Feature Summary

• Utilizes glass sealing technology for robust environmental protection
• Provides high frequency stability within specified temperature ranges
• Features a compact surface-mount footprint for automated assembly

Crystals Applications

• Precision clock generation in digital circuits
• Timing references for microcontrollers and processors
• Communication interface synchronization

Crystals Procurement Notes

Verify the specific ordering suffix against official TXC documentation to ensure correct tolerance and packaging specifications. Confirm that the required frequency stability and load capacitance align with the target circuit design before procurement. Cross-reference the datasheet for mechanical dimensions to validate PCB layout compatibility. Ensure compliance with RoHS requirements if applicable to the end product.

Crystals Selection Notes

Select this component when a 25 MHz fundamental mode crystal with ±20 ppm stability is required. The 10 pF load capacitance must match the oscillator circuit design. Consider the 60 Ohm ESR for drive level sensitivity. The glass-sealed construction offers advantages over ceramic packages in harsh environments. Verify the operating temperature range meets system requirements.

Crystals Part Context

This part belongs to the 7R series of SMD glass-sealed quartz crystals from TXC Corporation. The series covers frequencies from 20 MHz to 64 MHz with various stability options. The 7R-25.000MDDQ-T specifically denotes the 25 MHz variant with ±20 ppm stability and 10 pF load capacitance. It is distinct from the 7R-25.000MAAJ-T which features different tolerances and package characteristics.

Crystals Replacement Considerations

Direct substitutes include other 25 MHz SMD crystals with identical 10 pF load capacitance and ±20 ppm stability. Equivalent parts from other manufacturers must match the 2.0x1.6 mm footprint and 60 Ohm ESR. Verify that alternative components support the same operating temperature range and glass-sealing technology for comparable reliability.