7A-18.432MAAJ-T

Crystals Overview

The 7A-18.432MAAJ-T is a surface-mount quartz crystal manufactured by TXC Corporation, operating at a fundamental frequency of 18.432 MHz. It features a load capacitance of 18 pF and a frequency tolerance of ±30 ppm. The component utilizes a glass-sealed package with dimensions of 5.0 mm x 3.2 mm x 1.2 mm. It supports an equivalent series resistance (ESR) of 50 Ohms and operates within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Glass-sealed construction provides enhanced environmental stability and moisture resistance compared to standard ceramic packages.
• Compact 5.0 mm x 3.2 mm SMD footprint facilitates automated pick-and-place assembly and standard reflow soldering processes.
• Designed for low-power applications with a typical drive level of 100 μW.

Crystals Applications

• Portable USB data acquisition cards
• Personal Digital Assistants (PDAs)
• Digital cameras
• NFC readers

Crystals Procurement Notes

Verify the specific suffix 'J' against official datasheets to confirm pin configuration and sealing type. Ensure the selected variant matches the required ESR and load capacitance for the target oscillator circuit. Confirm RoHS compliance status regarding lead content in the glass seal if regulatory adherence is mandatory for the final product certification.

Crystals Selection Notes

Select this component when a 18.432 MHz reference is required for serial communication interfaces or microcontroller clock sources. The 18 pF load capacitance aligns with common MCU input requirements. Consider the 50 Ohm ESR for oscillator circuit design to ensure stable startup. The wide operating temperature range suits industrial and consumer electronics environments.

Crystals Part Context

This part belongs to the TXC 7A series of surface-mount quartz crystals. The series is characterized by glass-sealing technology, offering superior reliability over resin-sealed alternatives. It targets applications requiring stable timing in compact form factors, such as portable consumer devices and embedded systems.

Crystals Replacement Considerations

Direct substitutes include other 18.432 MHz crystals with identical 5x3.2mm dimensions, 18pF load capacitance, and ±30ppm tolerance. Verify that alternative manufacturers provide comparable ESR values and drive level specifications to maintain oscillator performance.