QT325S-38.400MAHE-T

Overview

The QT325S-38.400MAHE-T is a surface-mount quartz crystal resonator manufactured by QST Products, LLC. It operates at a fundamental frequency of 38.4 MHz with a load capacitance of 12 pF. The component exhibits a frequency tolerance and stability of ±30 ppm at 25°C and across the industrial temperature range of -40°C to +85°C. It features a four-terminal SMD package with no lead construction, measuring 3.2 x 2.5 mm. The equivalent series resistance (ESR) is specified at 50 ohms, ensuring reliable oscillation in standard clock circuits.

Feature Summary

• Seam seal ceramic package construction for environmental durability
• Four-terminal SMD footprint with no lead design
• Industrial temperature range operation from -40°C to +85°C
• Standard 12 pF load capacitance compatibility

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuit clocks
• Embedded system oscillator circuits

Procurement Notes

Verify the manufacturer designation as QST Products, LLC when sourcing this component. Confirm that the specific suffix MAHE-T corresponds to the required ±30 ppm stability and 12 pF load capacitance parameters. Ensure the procurement channel provides official datasheets to validate the 38.4 MHz frequency and 50 ohm ESR specifications against your circuit requirements.

Selection Notes

Select this component for applications requiring a 38.4 MHz reference with moderate stability. The 12 pF load capacitance must match the oscillator circuit design. Verify that the operating environment stays within the -40°C to +85°C range to maintain the specified ±30 ppm accuracy. Consider the 4-SMD no-lead package dimensions for PCB layout constraints.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series offers various frequencies and stability grades. The 38.4 MHz variant is commonly used in data communication interfaces. The MAHE-T suffix indicates specific packaging and stability characteristics distinct from other variants in the same physical footprint family.

Replacement Considerations

Substitute parts must match the 38.4 MHz frequency, 12 pF load capacitance, and 3.2x2.5mm package size. Verify that alternative components support the same ±30 ppm stability over the -40°C to +85°C range. Check ESR compatibility to ensure oscillator startup reliability.