7A-20.000MAAK-T

Crystals Overview

The TXC Corporation 7A-20.000MAAK-T is a quartz crystal resonator operating at a fundamental frequency of 20 MHz. It features a standard load capacitance of 20 pF and a frequency tolerance of ±50 ppm. The component utilizes a 2-SMD, no-lead surface mount package with dimensions of 5.00 mm in length, 3.20 mm in width, and a maximum height of 1.35 mm. It supports a base harmonic mode and exhibits an equivalent series resistance (ESR) of 50 Ohms. The device is rated for operation within a temperature range of -20°C to +70°C.

Crystals Feature Summary

• Glass-sealed construction provides enhanced environmental stability and resistance to moisture compared to standard ceramic packages.
• Designed for reliable performance in high-volume SMT assembly processes including standard reflow soldering.
• Compliant with RoHS directives, utilizing leaded glass materials that are exempt from specific restrictions.

Crystals Applications

• Portable USB data acquisition cards
• Laptop computer systems
• Personal Digital Assistants (PDAs)
• Digital camera modules

Crystals Procurement Notes

Verify the current lifecycle status before finalizing designs, as this specific part number may be discontinued or subject to production changes. Confirm that the 20 pF load capacitance matches the target circuit design requirements. Ensure the ±50 ppm frequency tolerance meets the system's timing accuracy specifications. Check for available parameter-equivalent substitutes if supply constraints exist.

Crystals Selection Notes

Select this component when a compact 3225 footprint is required alongside robust environmental protection for consumer electronics. The glass-sealed technology offers superior thermal cycling reliability compared to resin-packaged alternatives. Consider the -20°C to +70°C operating range against application demands. Verify compatibility with standard SMD reflow profiles during the manufacturing process integration phase.

Crystals Part Context

This component belongs to the TXC 7A series, which specializes in 5x3.2mm glass-sealed quartz crystals. This series addresses common failure modes associated with humidity ingress and thermal stress in standard ceramic packages. It serves as a direct replacement for legacy through-hole or basic SMD crystals in space-constrained portable devices requiring stable clock signals.

Crystals Replacement Considerations

The QST QT532G-20.000MBBK-T is identified as a parameter-equivalent substitute. Verify mechanical footprint compatibility and electrical characteristics prior to implementation.