QT325S-16.000MDIQ-T

Overview

The QST QT325S-16.000MDIQ-T is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a nominal frequency of 16.000 MHz and utilizes a 3.2mm x 2.5mm package with a height of 0.7mm. The component features a seam-sealed metal can construction to ensure environmental stability. Key electrical parameters include a load capacitance of 18pF and a frequency tolerance of ±10ppm at 25°C. The unit supports a maximum series resistance of 50 ohms and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Seam-sealed metal housing provides robust protection against moisture and contaminants
• Low profile SMD design facilitates automated assembly on high-density PCBs
• High frequency stability ensures accurate clock signals in digital circuits

Applications

• Microcontroller clock sources
• Communication interface timing
• Consumer electronics control boards

Procurement Notes

Verify the specific suffix 'IQ' against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure that the required load capacitance matches the target circuit design. Confirm RoHS compliance status through the manufacturer's latest datasheet before finalizing procurement orders.

Selection Notes

Select this component when a compact, low-profile crystal is required for 16MHz timing. The 18pF load capacitance must align with the oscillator circuit requirements. Consider the ±10ppm tolerance if higher precision than standard commercial grades is necessary for the application environment.

Part Context

This part belongs to the QT325S family of quartz crystals from QST. These components are widely used in portable devices and industrial equipment requiring reliable timing references. The model number indicates specific packaging and performance characteristics unique to this variant within the broader product line.

Replacement Considerations

Direct substitutes may include other 16MHz 3.2x2.5mm crystals with identical 18pF load capacitance and ±10ppm tolerance. Verify pin compatibility and thermal characteristics before substitution.