QT325S-16.000MEEQ-T

Overview

The QT325S-16.000MEEQ-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a nominal frequency of 16 MHz with a frequency stability and tolerance of ±10 ppm at 25°C. The component features a load capacitance of 10 pF and an equivalent series resistance (ESR) typically around 60 Ω. It utilizes a seam-sealed ceramic package measuring 3.2 mm x 2.5 mm, suitable for automated pick-and-place assembly. The device supports a standard operating temperature range from -20°C to +70°C, ensuring reliable performance in industrial control systems and general-purpose electronic circuits requiring stable clock signals.

Feature Summary

• Seam-sealed ceramic construction provides environmental protection and long-term frequency stability.
• Surface-mount design facilitates high-volume automated assembly on printed circuit boards.
• Standardized 10 pF load capacitance ensures compatibility with common microcontroller oscillator circuits.

Applications

• Industrial control system clock generation
• Microcontroller and processor timing sources
• General-purpose digital electronics

Procurement Notes

Verify the manufacturer designation carefully, as the QT325S series is produced by multiple vendors including TXC Corporation and QST. Ensure the specific part number matches the required frequency stability and package dimensions. Confirm that the supplier provides official datasheets to validate electrical parameters such as ESR and load capacitance before procurement.

Selection Notes

Select this component when a 16 MHz reference signal is required for embedded systems. The ±10 ppm stability is suitable for most digital interfaces. Verify that the target circuit's oscillator configuration matches the 10 pF load capacitance specification. Consider the -20°C to +70°C temperature range against the operational environment requirements.

Part Context

This component belongs to the QT325S series of miniature quartz crystals. The series is characterized by its small 3.2x2.5 mm footprint, making it ideal for space-constrained designs. These devices are widely used in consumer and industrial electronics where reliable timing is critical for data communication and processing operations.

Replacement Considerations

Compatible substitutes include the TXC Corporation part number QT325S-16.000MEEQ-T, which shares identical electrical specifications and physical dimensions. Other manufacturers may offer equivalent parts within the same series, provided the frequency, load capacitance, and stability ratings match exactly.