QT325S-48.000MAHJ-T

Overview

The QT325S-48.000MAHJ-T is a surface-mount quartz crystal manufactured by QST, operating at a fundamental frequency of 48 MHz. It features a frequency stability and tolerance of ±30 ppm at 25°C, with an equivalent series resistance (ESR) of 50 Ohms maximum. The component utilizes a load capacitance of 18 pF and is housed in a compact 4-SMD, No Lead package measuring 3.20mm x 2.50mm x 0.70mm. Designed for robust performance, it supports an operating temperature range from -40°C to +85°C and complies with RoHS3 standards.

Feature Summary

• Fundamental mode operation ensures precise timing signals at 48 MHz
• Compact 4-SMD no-lead footprint facilitates automated surface-mount assembly
• Wide operating temperature range suitable for demanding industrial environments

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuits

Procurement Notes

Verify the specific suffix 'MAHJ' against official QST documentation to confirm pin configuration and termination type. Ensure the selected variant matches the required 18pF load capacitance and 50 Ohm ESR specifications for the target circuit design. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this component when a 48 MHz fundamental frequency is required within a 3.2x2.5mm SMD envelope. Consider the ±30 ppm stability requirement and -40°C to +85°C temperature range against system constraints. Evaluate the 18pF load capacitance compatibility with the host oscillator circuit to ensure accurate frequency generation without external trimming.

Part Context

This part belongs to the QT325S series of quartz crystals from QST, designed for high-reliability applications requiring stable frequency references. The series offers various frequencies and package sizes, with the QT325S specifically optimized for space-constrained surface-mount designs. It serves as a critical timing element in modern electronic systems where precision and durability are paramount.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include the QT325S-48.000MAAE-T and the TXC QT325S-48.000MAHJ-T. These alternatives share identical electrical characteristics and physical dimensions, allowing for direct replacement in existing designs while maintaining circuit performance and form factor compatibility.