QT325S-32.000MAHJ-T

Overview

The QT325S-32.000MAHJ-T is a 32 MHz quartz crystal resonator manufactured by QST. It operates in fundamental mode with a frequency stability and tolerance of ±30 ppm at 25°C. The component features an equivalent series resistance (ESR) of 50 Ohms maximum and a load capacitance of 18 pF. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm. The device supports surface mount installation and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Compact 4-SMD no-lead surface mount package for space-constrained designs
• Fundamental mode operation ensuring stable oscillation at 32 MHz
• High frequency stability of ±30 ppm across the specified industrial temperature range

Applications

• Microcontroller clock sources requiring precise timing
• Communication interface circuits such as UART or SPI buses
• Digital signal processing systems needing reference frequencies
• Consumer electronics utilizing standard quartz timing components

Procurement Notes

Verify that the required load capacitance matches the circuit design, as this component specifies 18 pF. Confirm that the PCB footprint accommodates the 3.2x2.5 mm SMD package dimensions. Ensure the application environment stays within the -40°C to +85°C operating range to maintain the stated ±30 ppm frequency stability. Check for RoHS compliance requirements if applicable to the final assembly standards.

Selection Notes

Select this part when a 32 MHz fundamental mode crystal is required in a small 4-SMD form factor. Compare ESR specifications against oscillator drive level capabilities to prevent overdriving. Consider the ±30 ppm stability requirement relative to system timing tolerances. Evaluate thermal performance needs against the -40°C to +85°C rating before choosing alternative packages or wider stability grades.

Part Context

This component belongs to the QT325S series of quartz crystals from QST. The series offers various frequencies in a standardized 3.2x2.5 mm SMD package. It serves as a timing reference for digital circuits. The specific model denotes the 32 MHz variant with standard commercial/industrial temperature ratings and typical load capacitance values found in general-purpose applications.

Replacement Considerations

Direct substitutes must match the 32 MHz frequency, 18 pF load capacitance, 50 Ohm ESR, and 3.2x2.5 mm package size. Verify that any replacement maintains the same ±30 ppm stability and -40°C to +85°C operating range. Cross-reference pinout compatibility for 4-SMD no-lead packages to ensure seamless PCB integration without layout modifications.