7R-20.000MDDV-T

Crystals Overview

The 7R-20.000MDDV-T is a 20 MHz quartz crystal oscillator manufactured by TXC Corporation, designed for surface-mount applications. It features a 4-SMD, no-lead package with glass seal construction and ceramic substrate. The device operates within a temperature range of -20°C to 70°C, maintaining a frequency stability of ±20ppm across this range and at 25°C. It utilizes an 8pF load capacitance and exhibits a maximum equivalent series resistance (ESR) of 200 Ohms. The component is RoHS compliant and classified under ECCN EAR99.

Crystals Feature Summary

• Glass seal construction with ceramic substrate for enhanced environmental durability
• High frequency stability of ±20ppm maintained across the operating temperature range
• Compact 4-SMD no-lead surface mount package design

Crystals Applications

• Precision timing circuits requiring stable clock signals
• Embedded systems in automotive or industrial environments
• Communication modules needing reliable high-frequency references

Crystals Procurement Notes

Verify the specific package dimensions and pin configuration against the official datasheet before integration. Confirm that the load capacitance requirements of the host circuit align with the 8pF specification. Ensure the operating temperature range of -20°C to 70°C meets the environmental conditions of the final application. Check for RoHS compliance documentation if required by regulatory standards.

Crystals Selection Notes

Select this component when a compact, high-stability crystal is needed for space-constrained designs. The glass seal technology offers superior performance compared to standard ceramic packages in harsh environments. Consider the 200 Ohm ESR limit to ensure proper oscillation startup in the target circuit. Compare against other TXC series like 7V or 7M if different size or stability constraints apply.

Crystals Part Context

This part belongs to the TXC Corporation quartz crystal family, specifically utilizing glass seal technology for improved reliability. It serves as a fundamental passive component for generating precise clock frequencies in electronic systems. The 4-SMD form factor allows for automated assembly processes common in modern PCB manufacturing.

Crystals Replacement Considerations

Direct substitutes include the 7V-20.000MDDV-T from TXC Corporation, which shares similar electrical characteristics but may differ in package details. Cross-reference with other manufacturers offering 20MHz crystals with 8pF load capacitance and ±20ppm stability, ensuring the replacement matches the 4-SMD no-lead footprint.