QT325G-33.333MAGV-T

Overview

The QT325G-33.333MAGV-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 33.333 MHz with a frequency tolerance of ±30 ppm and a stability of ±50 ppm over the operating temperature range. The component features an 8 pF load capacitance and an equivalent series resistance (ESR) of 60 Ohms. It utilizes a 4-SMD, no-lead package with dimensions of 3.2 mm x 2.5 mm and a maximum height of 0.9 mm. The device supports base harmonic operation and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Compact 4-SMD no-lead package design suitable for automated surface-mount assembly processes.
• High frequency stability within specified temperature ranges for reliable timing performance.
• Glass-sealed construction providing environmental protection and long-term reliability.

Applications

• Clock generation for microcontrollers and digital signal processors
• Timing references in automotive electronic control units
• Frequency standards in communication modules

Procurement Notes

Verify the manufacturer designation on the component marking or official documentation, as similar part numbers may exist across different suppliers. Confirm that the specific suffix matches the required frequency tolerance and stability specifications for your circuit design. Ensure compatibility with the target PCB footprint and reflow soldering profile requirements defined in the datasheet.

Selection Notes

Select this component when a 33.333 MHz fundamental mode crystal is required with tight initial tolerance. Consider the 8 pF load capacitance requirement for oscillator circuit matching. Evaluate the ESR value against the oscillator driver strength to prevent over-driving. Verify the temperature range meets the operational environment constraints of the final application.

Part Context

This part belongs to the QT325G series of glass-sealed quartz crystals from QST. These components are engineered for high-reliability applications requiring stable frequency generation in compact form factors. The series typically includes various frequencies and tolerance options to support diverse timing needs in consumer and industrial electronics.

Replacement Considerations

AM-33.333MAGV-T from TXC Corporation is documented as a parameter-equivalent substitute. Verify mechanical dimensions and electrical parameters before substitution.