QT325S-20.000MAHC-T

Overview

The QST QT325S-20.000MAHC-T is a quartz crystal resonator operating at a nominal frequency of 20 MHz. It utilizes a glass seal construction within a 3.2mm x 2.5mm surface-mount package. The component features a load capacitance of 18 pF and a maximum equivalent series resistance of 50 Ohms. Frequency stability is specified at ±30 ppm over the temperature range of -40°C to +85°C.

Feature Summary

• Glass seal construction for environmental protection
• Surface-mount design for automated assembly
• High frequency stability across industrial temperature ranges

Applications

• Embedded communication systems
• Microcontroller clock sources
• Consumer electronics timing circuits

Procurement Notes

Verify the specific suffix 'HC' against official QST documentation to confirm the glass seal variant and associated electrical parameters. Ensure the ordering part number matches the required frequency tolerance and load capacitance specifications for the target application circuit design.

Selection Notes

Select this component when a compact 3.2x2.5mm footprint is required with robust thermal stability. The glass seal offers superior reliability compared to standard epoxy variants in harsh environments. Confirm that the 18pF load capacitance aligns with the host oscillator circuit requirements.

Part Context

This model belongs to the QT325S series of MHz quartz crystals manufactured by QST. The series provides various frequency options and stability grades within a standardized small outline no-lead package, suitable for space-constrained digital applications requiring precise timing references.

Replacement Considerations

Cross-reference with other manufacturers offering 3.2x2.5mm glass-seal crystals with identical 20MHz frequency, 18pF load capacitance, and ±30ppm stability to ensure pin-compatible substitution.