QT325S-30.000MAHE-T

Overview

The QT325S-30.000MAHE-T is a surface-mount quartz crystal oscillator manufactured by QST. It operates at a fundamental frequency of 30 MHz with a load capacitance of 12 pF and a maximum equivalent series resistance of 50 Ohms. The component features a 4-pin SMD package with dimensions of 3.2 x 2.5 x 0.7 mm. Frequency tolerance and stability are specified at ±30 ppm across the operating temperature range of -40°C to +85°C.

Feature Summary

• Seam seal construction for environmental protection
• Surface mount design for automated assembly
• Fundamental mode operation for precise timing

Applications

• Clock generation in microcontroller systems
• Timing reference for communication interfaces
• Frequency control in consumer electronics

Procurement Notes

Verify the specific manufacturer designation, as this part number may be associated with QST or TXC Corporation depending on the supply chain source. Confirm the exact package dimensions and pin configuration against the official datasheet before integration. Ensure the load capacitance matches the target circuit requirements to maintain frequency accuracy.

Selection Notes

Select this component when a 30 MHz fundamental frequency is required in a compact 3.2x2.5mm footprint. The ±30 ppm stability specification suits general-purpose digital applications. Consider the 50 Ohm ESR limit for oscillator circuit compatibility. Verify the operating temperature range meets the environmental conditions of the final product.

Part Context

This crystal belongs to the QT325S series, which utilizes seam seal technology for reliability. The series offers various frequency options within the same physical package, allowing for design flexibility. The 4-pin configuration facilitates standard surface-mount placement processes.

Replacement Considerations

Direct substitutes include other manufacturers offering identical 3.2x2.5mm 30MHz crystals with matching electrical parameters. Cross-reference specifications such as load capacitance and ESR to ensure circuit compatibility. Verify that any replacement maintains the same frequency stability and temperature range requirements.