8Z26000021

Crystals Overview

The TXC Corporation 8Z26000021 is a surface-mount seam-sealing crystal unit designed for precision timing applications. It operates at a nominal frequency of 26 MHz and utilizes an AT-cut fundamental mode quartz resonator. The component features a compact 2.5 mm x 2.0 mm SMD package with a height of 0.55 mm, weighing approximately 0.009 g. It supports a load capacitance of 10 pF and maintains a frequency tolerance of ±10 ppm at 25°C. The device ensures long-term stability with an annual aging rate of ±1 ppm and functions within a temperature range of -20°C to +85°C.

Crystals Feature Summary

• Seam-sealed SMD construction provides high mechanical strength and environmental protection
• AT-cut fundamental mode operation ensures superior frequency stability and low phase noise
• Compact 2.5x2.0mm footprint enables integration in space-constrained portable designs

Crystals Applications

• Low-power Bluetooth module clock sources
• Wearable electronic devices requiring minimal weight
• Consumer electronics with strict size limitations
• General-purpose microcontroller clock generation

Crystals Procurement Notes

Verify the specific revision status, such as Rev.A2, to ensure alignment with mass production specifications rather than engineering samples. Confirm RoHS compliance requirements match project standards. Validate that the 10 pF load capacitance matches the target circuit design. Ensure the operating temperature range of -20°C to +85°C meets the application's environmental constraints before finalizing procurement.

Crystals Selection Notes

Select this component when a balance of small form factor and moderate precision is required. The 26 MHz frequency suits many communication interfaces. The ±10 ppm tolerance is adequate for standard consumer applications but may require tighter specs for high-precision systems. Consider the low driving level capability for battery-powered designs where power efficiency is critical.

Crystals Part Context

This part belongs to the TXC 8Z series of surface-mount crystals. These units are characterized by their seam-sealed technology, which offers robustness against moisture and contaminants compared to standard epoxy-sealed packages. The series targets applications demanding reliable performance in compact electronic assemblies across various consumer and industrial sectors.

Crystals Replacement Considerations

Direct substitutes must match the 26 MHz frequency, 2.5x2.0mm package, and 10 pF load capacitance. Verify equivalent AT-cut characteristics and similar aging rates. Cross-reference thermal ranges and ESR limits to ensure functional compatibility without redesigning the PCB layout.