QT325S-10.000MAHJ-T

Overview

The QT325S-10.000MAHJ-T is a 10 MHz quartz crystal manufactured by QST, designed for surface-mount applications. It operates in fundamental mode with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 150 Ohms. The component features a frequency stability and tolerance of ±30 ppm at 25°C and across the -40°C to +85°C operating temperature range. It utilizes a 4-SMD, no-lead package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm. The device complies with RoHS3 standards and has a Moisture Sensitivity Level (MSL) rating of 1.

Feature Summary

• Seam seal construction for enhanced environmental protection
• Surface-mount design compatible with automated assembly processes
• Fundamental oscillation mode operation

Applications

• General-purpose clock signal generation in consumer electronics
• Timing reference for microcontroller-based systems
• Communication interface synchronization circuits

Procurement Notes

Verify that the specific suffix HJ-T corresponds to the required packaging and tolerance specifications for your design. Confirm that the 150 Ohm ESR value aligns with your oscillator circuit requirements. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for RoHS3 compliance documentation if required by your supply chain regulations. Validate the MSL 1 rating against your reflow soldering profile capabilities.

Selection Notes

Select this component when a 10 MHz timing source with ±30 ppm stability is required in a compact 3.2x2.5 mm form factor. The 18 pF load capacitance must match the external capacitors specified in the host circuit design. Consider the 150 Ohm ESR limit to ensure reliable oscillation start-up. The wide temperature range supports operation in varied environmental conditions. Verify compatibility with standard SMD reflow processes due to the no-lead package type.

Part Context

This part belongs to the QT325S series of seam seal crystals from QST. These components are engineered for high reliability in space-constrained electronic devices. The series offers various frequency options within the same physical footprint. The QT325S designation indicates a specific package style optimized for modern surface-mount technology lines. This model represents a standard frequency variant within the product family.

Replacement Considerations

Public confirmed substitute part numbers include QT325S-10.000MAAE-T and QT325S-10.000MAAJ-T from QST. These alternatives share the same series characteristics but may differ in specific suffix-defined parameters such as packaging or tolerance. Verify electrical equivalence before substitution.