QT49-16.000MEEJ-B

Overview

The QT49-16.000MEEJ-B is a 16 MHz AT-cut quartz crystal resonator manufactured by QST. It operates within a frequency tolerance of ±10 ppm and maintains a frequency stability of ±10 ppm at 25°C. The component features an 18 pF load capacitance and a maximum series resistance of 30 Ohms. Designed for through-hole mounting, it utilizes the standard HC-49/US package with dimensions of approximately 11.5 x 5 x 3.68 mm.

Feature Summary

• Provides precise 16 MHz oscillation with high frequency stability
• Utilizes standard HC-49/US through-hole packaging for reliable integration
• Features low series resistance for efficient circuit performance

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital logic circuit synchronization

Procurement Notes

Verify that the specific part number matches the required 16 MHz frequency and ±10 ppm tolerance specifications. Confirm compatibility with the target circuit's load capacitance requirements of 18 pF. Ensure the HC-49/US through-hole package aligns with the printed circuit board layout and mounting constraints. Check datasheet details for operating temperature range limitations to ensure suitability for the intended environmental conditions.

Selection Notes

Select this component when a stable 16 MHz reference is required for through-hole designs. Consider the ±10 ppm tolerance for applications demanding tight frequency accuracy. Evaluate the 18 pF load capacitance against the oscillator circuit design. Compare the physical dimensions of the HC-49/US package against available board space. Assess the series resistance value for power consumption considerations in the specific application.

Part Context

This model belongs to the QT49 series of quartz crystals from QST. These components are widely used as fundamental frequency references in electronic systems. The HC-49/US form factor represents a standard industry size for through-hole crystal resonators. This specific variant offers balanced performance characteristics suitable for general-purpose digital timing applications.

Replacement Considerations

Compatible substitutes include other 16 MHz crystals with similar electrical parameters and HC-49/US packages. Verify that alternative parts meet the 18 pF load capacitance and ±10 ppm tolerance requirements. Ensure mechanical dimensions match the existing footprint to avoid rework.