QT325G-32.000MAHJ-T

Overview

The QT325G-32.000MAHJ-T is a 32 MHz quartz crystal resonator manufactured by QST. It utilizes a 4-SMD, No Lead package with dimensions of 3.2mm x 2.5mm x 0.8mm. The component features a ceramic body and glass seal construction. It operates within a temperature range of -40°C to +85°C with a frequency stability of ±30ppm. The load capacitance is specified as 18pF, and the equivalent series resistance (ESR) is 60 Ohms.

Feature Summary

• Glass-sealed ceramic construction for moisture resistance
• Standardized 4-SMD footprint compatible with common PCB layouts
• Wide operating temperature range suitable for industrial environments

Applications

• Industrial control systems requiring stable clock signals
• Automotive electronics and peripheral devices
• Outdoor equipment subject to wide temperature variations

Procurement Notes

Verify the specific suffix HJ against official QST documentation to confirm the -40°C to +85°C temperature grade and 18pF load capacitance. Ensure the 60 Ohm ESR requirement aligns with the target oscillator circuit design. Confirm RoHS exemption status if lead content is a regulatory constraint for the final assembly.

Selection Notes

Select this component when a 32 MHz reference is required in a compact 3250 SMD form factor. The ±30ppm stability at -40°C to +85°C makes it appropriate for industrial applications where moderate precision is sufficient. Verify that the 18pF load capacitance matches the microcontroller or FPGA input requirements to ensure proper oscillation.

Part Context

This part belongs to the QT325G series of surface-mount crystals from QST. The series offers various frequency options and stability grades within the 3.2mm x 2.5mm package. The HJ suffix specifically denotes the industrial temperature rating and electrical parameters distinct from consumer-grade variants in the same physical footprint family.

Replacement Considerations

Direct substitutes include other manufacturers' 32MHz crystals in 3250 packages with matching 18pF load capacitance and ≤60 Ohm ESR. Ensure any replacement maintains the -40°C to +85°C operating range and glass-seal construction for environmental reliability.