QT325S-16.000MAHE-T

Overview

The QT325S-16.000MAHE-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 16 MHz with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 60 Ohms. The component features a ±30 ppm frequency stability at 25°C and across the operating temperature range of -40°C to +85°C. It utilizes a 4-SMD, No Lead package configuration with dimensions of 3.2 x 2.5 mm.

Feature Summary

• Seam seal construction for environmental protection
• Surface-mount compatible design
• High frequency stability specification

Applications

• Microcontroller clock sources
• Communication module timing
• Consumer electronics oscillators

Procurement Notes

Verify the specific suffix 'HE' against official QST documentation to confirm pinout and sealing type. Ensure the load capacitance requirement of the target circuit matches the 12pF specification. Confirm that the 60 Ohm ESR aligns with the oscillator circuit design parameters before procurement.

Selection Notes

Select this component when a 16 MHz reference is required in a compact 3.2x2.5mm footprint. The ±30ppm stability suits general-purpose digital systems. Consider the -40°C to +85°C range for industrial or automotive environments. Verify compatibility with reflow soldering profiles specified in the datasheet.

Part Context

This part belongs to the QT325S series of quartz crystals from QST. The series offers various frequencies and packaging options. The 'S' indicates a specific case size, while 'HE' denotes the sealing and termination style. This model provides a standard solution for cost-sensitive mass production applications requiring reliable timing.

Replacement Considerations

Direct substitutes must match the 16 MHz frequency, 12pF load capacitance, and 3.2x2.5mm package. Check manufacturer cross-reference lists for equivalent parts with identical electrical characteristics and thermal ratings.