QT49-16.9344MAHH-B

Overview

The QT49-16.9344MAHH-B is a fundamental-mode quartz crystal resonator manufactured by QST, operating at a nominal frequency of 16.9344 MHz. It features a frequency stability of ±30 ppm and a load capacitance of 20 pF. The component exhibits a maximum equivalent series resistance (ESR) of 30 Ohms and supports a drive level ranging from 1 to 500 μW, with a typical value of 100 μW. Aging performance is specified at ±5 ppm maximum during the first year at 25°C. The device operates within a storage temperature range of -55°C to +125°C.

Feature Summary

• Fundamental-mode operation for precise frequency generation
• High frequency stability of ±30 ppm
• Low aging rate of ±5 ppm maximum in the first year
• Compatible with Pierce oscillator configurations

Applications

• Clock generation for microprocessors and microcontrollers
• Frequency reference for communication systems
• Timing circuits in consumer electronics
• Oscillator modules requiring stable MHz frequencies

Procurement Notes

Verify that the specific part number QT49-16.9344MAHH-B matches the required frequency, stability, and package specifications. Confirm compatibility with the target circuit's load capacitance and drive level requirements. Ensure the supplier provides authentic components with traceable documentation. Check for any specific handling instructions related to electrostatic discharge sensitivity.

Selection Notes

Select this component when a stable 16.9344 MHz reference is required with ±30 ppm tolerance. Consider the 30 Ohm ESR limit for oscillator design constraints. Evaluate the ±5 ppm annual aging against long-term system accuracy needs. Ensure the application environment falls within the specified storage temperature range.

Part Context

This component belongs to the QT49 series of MHz crystals produced by QST. The series includes various frequencies and stability grades, utilizing standard through-hole packaging. The QT49 designation indicates a specific form factor and electrical characteristic set common to this product line.

Replacement Considerations

Substitute parts must match the 16.9344 MHz frequency, 20 pF load capacitance, and ±30 ppm stability. Verify equivalent ESR and drive level capabilities. Ensure the replacement offers comparable aging performance and temperature characteristics.