7R-27.000MDDQ-T

Crystals Overview

The TXC Corporation 7R-27.000MDDQ-T is a surface-mount glass-sealed crystal operating at a fundamental frequency of 27 MHz. It features a load capacitance of 10 pF and a frequency stability tolerance of ±20 ppm. The component utilizes a 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm and a maximum height of 0.7 mm. Key electrical parameters include an Equivalent Series Resistance (ESR) of 150 Ohms. The device is designed for SMD/SMT installation and complies with RoHS standards.

Crystals Feature Summary

• Glass-sealed construction for enhanced environmental protection
• Fundamental mode operation at 27 MHz
• Compact 4-SMD no-lead surface mount footprint

Crystals Applications

• General clock signal generation in electronic circuits
• Frequency reference sources for microcontrollers
• Communication module timing applications

Crystals Procurement Notes

Verify the specific ESR value of 150 Ohms against circuit requirements, as this differs from other similar series components. Confirm that the 10 pF load capacitance matches the oscillator circuit design. Ensure the 4-SMD no-lead package dimensions are compatible with the PCB layout. Check for RoHS compliance status if required by project specifications.

Crystals Selection Notes

Select this component when a 27 MHz fundamental frequency with ±20 ppm stability is required. The 150 Ohm ESR must be accommodated by the driving circuit. The glass-sealed package offers reliability advantages over standard epoxy types. Consider the 10 pF load capacitance requirement for proper oscillation startup.

Crystals Part Context

This part belongs to the TXC 7R series of SMD glass-sealed crystals. The series typically covers frequencies from 20 MHz to 64 MHz with varying stability options. The 7R designation indicates a specific form factor and sealing technology distinct from the 7M or 7V series.

Crystals Replacement Considerations

The 7V-27.000MDDQ-T is a related variant within the same package style but may have different ESR characteristics. Verify compatibility before substitution.