QT252S-19.200MAHQ-T

Overview

The QT252S-19.200MAHQ-T is a surface-mount quartz crystal manufactured by QST Corporation, designed for precision timing applications. It operates at a fundamental frequency of 19.2 MHz with a load capacitance of 8pF and an equivalent series resistance (ESR) of 100 Ohms. The component exhibits a frequency tolerance and stability of ±30ppm at 25°C and across the industrial temperature range of -40°C to +85°C. It utilizes a 4-SMD, no-lead package with dimensions of 2.5mm x 2.0mm x 0.55mm, ensuring compatibility with automated assembly processes.

Feature Summary

• Fundamental mode operation ensures stable oscillation characteristics
• Seam seal construction provides environmental protection
• Compact SMD footprint facilitates high-density PCB layouts

Applications

• Precision timing circuits in industrial equipment
• Clock generation for microcontrollers and processors
• Communication module synchronization systems

Procurement Notes

Verify the manufacturer designation on official documentation, as this part number appears under both TXC and QST branding in public databases. Confirm the specific suffix codes against the manufacturer's datasheet to ensure accurate frequency tolerance and temperature range specifications. Cross-reference the package dimensions and pin configuration with the target PCB design to prevent mechanical interference during assembly.

Selection Notes

Select this component when a 19.2 MHz reference signal is required with ±30ppm stability across wide industrial temperatures. Ensure the circuit load capacitance matches the specified 8pF value to maintain frequency accuracy. Evaluate the 100 Ohm ESR against the oscillator driver strength requirements to prevent over-driving or failure to start.

Part Context

This crystal belongs to the QT252S series of surface-mount quartz resonators. The series offers various frequency options within a standardized 2.5x2.0mm package. These components are engineered for applications requiring reliable frequency control in space-constrained electronic designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative crystals based on identical frequency, load capacitance, ESR, and package dimensions.