QT325S-16.000MEEE-T

Overview

The QT325S-16.000MEEE-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 16 MHz with a load capacitance of 18 pF. The component exhibits a frequency stability of ±10 ppm over the extended industrial temperature range of -30°C to +85°C. It utilizes a 4-SMD, no-lead package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm, ensuring compatibility with automated pick-and-place assembly processes.

Feature Summary

• Seam seal construction for enhanced environmental protection and long-term reliability
• Ultra-low profile SMD package optimized for space-constrained PCB layouts
• High frequency stability across wide industrial temperature variations
• Lead-free termination compatible with modern RoHS-compliant manufacturing standards

Applications

• Wireless communication modules requiring precise clock synchronization
• Microcontroller unit (MCU) system clocks for embedded systems
• Portable consumer electronics with strict size limitations
• Industrial control boards operating in variable thermal environments

Procurement Notes

Verify the specific suffix 'E' confirms the ±10 ppm stability and 18 pF load capacitance against the official QST datasheet. Ensure the ordering part number matches the exact frequency and package variant required. Confirm compliance with current environmental directives before finalizing procurement orders.

Selection Notes

Select this component when high stability is critical within a compact form factor. The ±10 ppm tolerance suits applications sensitive to clock drift. Compare against lower-stability variants if cost reduction is prioritized over precision. Verify that the 18 pF load capacitance aligns with the host circuit's oscillator design requirements.

Part Context

This part belongs to the QT325S series of seam-seal crystals from QST. The series offers various stability grades and temperature ranges. The MEEE suffix specifically denotes the 16 MHz frequency, 18 pF load, and ±10 ppm stability over the -30°C to +85C range, differentiating it from standard commercial grade alternatives.

Replacement Considerations

Direct substitutes include other QT325S variants with matching 16 MHz frequency and 18 pF load capacitance. Cross-reference stability specifications to ensure equivalent performance. Verify package dimensions and pin configuration compatibility before substitution.