QT532S-48.000MAHJ-T

Overview

The QT532S-48.000MAHJ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 48 MHz with a load capacitance of 18 pF and an equivalent series resistance of 40 Ohms. The component features a ±30 ppm frequency tolerance and stability across the operating temperature range of -40°C to +85°C. It utilizes a 4-SMD, No Lead package with dimensions of 5.0 mm x 3.2 mm, employing a seam seal construction for environmental protection.

Feature Summary

• Seam seal construction for enhanced environmental durability
• Surface-mount design compatible with automated assembly processes
• Fundamental mode operation for stable frequency generation

Applications

• Clock signal generation in digital logic circuits
• Frequency reference sources for microcontroller systems
• Timing components in communication interface modules

Procurement Notes

Verify the manufacturer designation on official documentation, as some listings associate this part number with TXC Corporation while others cite QST Products LLC. Confirm that the specific order matches the required 48 MHz frequency and 18 pF load capacitance specifications. Ensure the package type corresponds to the 4-SMD, No Lead form factor with 5.0x3.2 mm dimensions before finalizing procurement.

Selection Notes

Select this component when a 48 MHz timing source is required for space-constrained designs due to its compact 5.0x3.2 mm footprint. The ±30 ppm stability rating makes it suitable for general-purpose digital applications where high precision is not critical. Consider the 40 Ohm ESR when designing oscillator circuits to ensure proper startup conditions and sustained oscillation within the specified temperature range.

Part Context

This crystal belongs to the QT532S series, which represents a family of surface-mount quartz resonators characterized by their small outline dimensions and seam seal technology. The series offers various frequency options while maintaining consistent electrical parameters such as load capacitance and stability ratings across different models within the same physical package size.

Replacement Considerations

Direct substitutes include other 48 MHz crystals with identical 18 pF load capacitance and similar ±30 ppm stability ratings. Compatible alternatives must match the 4-SMD, No Lead package dimensions of 5.0x3.2 mm to ensure mechanical fit. Verify that replacement parts support the same operating temperature range of -40°C to +85°C.