QT325S-37.400MAHV-T

Overview

The QT325S-37.400MAHV-T is a surface-mount crystal oscillator manufactured by QST, designed for precision timing applications. It operates at a nominal frequency of 37.4 MHz with an initial tolerance and temperature stability of ±30 ppm. The component features a load capacitance of 8 pF and an equivalent series resistance (ESR) of 50 Ohms. It utilizes a compact 4-SMD, No Lead package with dimensions of 3.2 x 2.5 x 0.7 mm. The device supports an operating temperature range of -40°C to +85°C, ensuring reliable performance in demanding environments.

Feature Summary

• Compact 4-SMD no-lead package design suitable for space-constrained PCB layouts
• High frequency stability of ±30 ppm across the specified temperature range
• Low equivalent series resistance of 50 Ohms for efficient circuit integration
• Wide operating temperature range from -40°C to +85°C

Applications

• Precision clock generation in communication modules
• Timing reference for microcontroller-based systems
• Signal processing circuits requiring stable frequency sources
• Embedded devices with strict size limitations

Procurement Notes

Verify the specific suffix HV-T against official QST documentation to confirm the exact tolerance and temperature range specifications. Ensure compatibility with reflow soldering profiles recommended for 4-SMD packages. Cross-reference the part number with authorized distributors to avoid counterfeit components. Confirm that the 8 pF load capacitance matches the target circuit design requirements before procurement.

Selection Notes

Select this component when a 37.4 MHz frequency is required with ±30 ppm stability. Consider the 3.2 x 2.5 mm footprint for board space optimization. Evaluate the 50 Ohm ESR against the oscillator circuit's drive level constraints. Verify that the -40°C to +85°C range meets the environmental conditions of the final application.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series offers various frequencies and tolerances within a standardized small outline package. The MAHV-T suffix indicates specific electrical characteristics including the 30 ppm stability and 8 pF load capacitance. This series is commonly used in consumer electronics and industrial control systems.

Replacement Considerations

Direct substitutes may include other 37.4 MHz crystals with similar ±30 ppm stability and 8 pF load capacitance in a 4-SMD package. Verify mechanical dimensions and pin configuration compatibility. Check if alternative manufacturers offer equivalent performance metrics for the same operating temperature range.