QT325S-33.333MAGV-T

Overview

The QT325S-33.333MAGV-T is a surface-mount quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 33.333 MHz. It features a ±30 ppm frequency tolerance and ±50 ppm stability over the specified temperature range. The component utilizes an 8 pF load capacitance and exhibits a maximum equivalent series resistance (ESR) of 60 Ohms. Designed for automotive applications, it holds AEC-Q200 qualification. The physical package is a 4-SMD, no-lead type with dimensions of 3.2 mm x 2.5 mm x 0.9 mm max, supporting operation between -40°C and +85°C.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• Compact 4-SMD no-lead surface mount package
• Fundamental mode operation at 33.333 MHz

Applications

• Automotive electronic control units
• In-vehicle infotainment systems
• Automotive sensor interfaces

Procurement Notes

Verify that the ordering suffix matches the required temperature stability grade, as variations exist within the QT325S family. Confirm the specific load capacitance and ESR requirements align with the target oscillator circuit design. Ensure the manufacturer is identified as QST to distinguish from similar part numbers produced by other vendors such as TXC Corporation. Cross-reference the full part number against official distributor catalogs to confirm current availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when a 33.333 MHz reference is required in space-constrained automotive designs. The 3.2x2.5mm footprint offers a balance between performance and board area efficiency. Consider the ±30 ppm tolerance sufficient for standard clocking needs where higher precision is not mandated. Verify compatibility with the host microcontroller's internal oscillator parameters regarding load capacitance matching.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series provides various frequency options and stability grades tailored for automotive environments. The AV suffix in related part numbers often indicates specific automotive-grade packaging or testing protocols. This model represents a standard fundamental frequency variant within the broader portfolio of SMD quartz resonators.

Replacement Considerations

The AM-33.333MAGV-T from TXC Corporation is documented as a parameter-equivalent substitute. Verify mechanical dimensions and electrical specifications match exactly before substitution. Other QST variants like QT325S-33.333MAAE-T may differ in stability or temperature range.