8Z40020005

Crystals Overview

The TXC Corporation 8Z40020005 is a surface mount seam-sealed crystal unit designed for high-precision frequency control. It operates at a nominal frequency of 40 MHz in fundamental mode. The component features a compact 2.5 mm x 2.0 mm x 0.55 mm package with four solder pads. Key electrical specifications include a load capacitance (CL) of 7.5 pF and a maximum equivalent series resistance (Rr) of 40 ohms. Frequency stability is rated at ±10 ppm over the operating temperature range of -20°C to +70°C, with an initial tolerance of ±10 ppm at 25°C. The device supports a maximum drive level of 100 µW and exhibits an annual aging rate of ≤±1 ppm.

Crystals Feature Summary

• Seam-sealed SMD construction provides superior hermeticity compared to standard plastic packages.
• Fundamental mode operation eliminates the need for frequency multiplication circuits.
• RoHS compliant manufacturing ensures adherence to environmental regulations.

Crystals Applications

• Clock source generation for Gigabit Ethernet interfaces
• Consumer electronic devices requiring stable timing references
• Indoor and general outdoor equipment within standard temperature ranges

Crystals Procurement Notes

Verify the specific ordering suffix when placing orders, as different suffixes may indicate engineering samples or non-production versions. Confirm that the requested part number corresponds to the mass-produced variant rather than prototype units. Ensure compatibility with the target load capacitance requirements during the procurement phase to avoid integration issues.

Crystals Selection Notes

Select this component when a 40 MHz reference is required in a small form factor. Designers must match the circuit load capacitance to the specified 7.5 pF value; using standard values like 18 pF will result in significant frequency deviation. This model is suitable for commercial applications but lacks the wide temperature range required for industrial-grade environments.

Crystals Part Context

This crystal belongs to the 8Z series from TXC Corporation, which specializes in surface mount seam-sealed crystals. The series is characterized by high-frequency stability and precision. The 8Z40020005 specifically targets applications needing reliable timing in compact consumer electronics, offering a balance between size, performance, and cost-effectiveness.

Crystals Replacement Considerations

Direct substitutes are not explicitly confirmed in public documentation. Cross-referencing requires matching the 40 MHz frequency, 7.5 pF load capacitance, 2520 package dimensions, and seam-sealed construction type to ensure functional equivalence.