QT325S-16.000MAHV-T

Overview

The QT325S-16.000MAHV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 16 MHz with a load capacitance of 8 pF and an equivalent series resistance of 60 Ohms. The component features a ±30 ppm frequency stability across the operating temperature range of -40°C to +85°C. It utilizes a 4-SMD, no lead package with dimensions of 3.2 x 2.5 x 0.7 mm, employing seam seal technology for mechanical integrity.

Feature Summary

• Seam seal construction provides robust mechanical support and environmental protection
• Optimized for low profile surface-mount assembly processes
• Maintains stable frequency performance across wide industrial temperature variations

Applications

• Microcontroller clock sources in embedded systems
• Communication module timing references
• Industrial control system oscillators

Procurement Notes

Verify the specific suffix HV against official QST documentation to confirm load capacitance and tolerance specifications. Ensure the ordering part number matches the required 8 pF load capacitance and ±30 ppm stability. Cross-reference the package outline drawing to confirm compatibility with PCB footprint requirements. Confirm RoHS compliance status through the manufacturer's current datasheet.

Selection Notes

Select this component when a 16 MHz reference is required for space-constrained designs. The 8 pF load capacitance suits circuits with lower stray capacitance. Consider the 60 Ohm ESR for oscillator circuit drive level limitations. Verify that the -40°C to +85°C range meets the operational environment requirements.

Part Context

This part belongs to the QT325S series of seam seal crystals from QST. The series offers various frequencies and package options for SMD applications. The 16.000 variant specifically targets common microcontroller and communication clock needs. The HV suffix denotes specific electrical characteristics within the product line.

Replacement Considerations

Direct substitutes include other manufacturers' 16 MHz crystals in 3225 packages with 8 pF load capacitance. Verify equivalent ESR and stability ratings. Check pinout compatibility and mounting pad dimensions. Ensure thermal and electrical specifications match the original design constraints.