7A-27.000MAAQ-T

Crystals Overview

The TXC Corporation 7A-27.000MAAQ-T is a quartz crystal resonator operating at a fundamental frequency of 27.000 MHz. It features a load capacitance of 10 pF and a frequency tolerance of ±30 ppm. The component utilizes a 2-SMD, no-lead surface mount package with dimensions of 5.00 mm in length and 3.20 mm in width. It exhibits an equivalent series resistance (ESR) of 50 Ohms maximum. The device is designed for operation within a temperature range of -20°C to +70°C.

Crystals Feature Summary

• Glass-sealed construction provides enhanced environmental stability and moisture resistance compared to standard ceramic packages.
• Optimized for SMT assembly processes, ensuring compatibility with standard reflow soldering profiles.

Crystals Applications

• Portable USB interface cards
• Personal Digital Assistants (PDAs)
• Digital cameras

Crystals Procurement Notes

Verify the current manufacturing status before procurement planning. This specific part number is listed as obsolete or end-of-life by major distributors. Confirm availability of active replacement components from the manufacturer's official substitution list to ensure long-term supply chain continuity for production schedules.

Crystals Selection Notes

Select this component when a 27 MHz clock source is required for compact consumer electronics. Ensure the circuit design accommodates the 10 pF load capacitance and 50 Ohm ESR specifications. Verify that the application environment remains within the specified -20°C to +70°C operational temperature range for optimal frequency stability.

Crystals Part Context

This component belongs to the TXC 7A series, which specializes in 5x3.2 mm glass-sealed surface mount crystals. The series is engineered for high reliability in space-constrained applications, offering superior performance against thermal cycling and humidity compared to resin-sealed alternatives commonly found in general-purpose consumer devices.

Crystals Replacement Considerations

Official substitutes include CTS-Frequency Controls part numbers 445C33A27M00000, 445C33J27M00000, and 445C33K27M00000. These replacements maintain similar electrical characteristics and form factors suitable for direct board layout adaptation.