QT49S-33.8688MAGQ-T

Overview

The QT49S-33.8688MAGQ-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 33.8688 MHz. It utilizes an HC-49/US package style and features a load capacitance of 10 pF with an equivalent series resistance (ESR) typically ranging between 30 and 50 Ohms. The component offers frequency stability options including ±30 ppm or ±50 ppm over the standard commercial temperature range of -20°C to +70°C. This surface-mount compatible design ensures reliable signal generation for digital clocking applications.

Feature Summary

• Provides precise frequency generation at 33.8688 MHz for digital circuit synchronization
• Features robust HC-49/US mechanical housing for stable oscillation performance
• Supports standard load capacitance requirements for common microcontroller interfaces

Applications

• Microcontroller clock source circuits
• Communication module timing references
• Digital logic system oscillators

Procurement Notes

Verify the specific suffix code against the manufacturer's official datasheet to confirm exact tolerance and temperature range specifications. Ensure the ordering part number matches the required load capacitance and ESR values for your circuit design. Cross-reference the RoHS compliance status if environmental regulations apply to your production process.

Selection Notes

Select this component when a 33.8688 MHz reference is required for serial communication or processing clocks. Consider the ±30 ppm or ±50 ppm stability grades based on system timing sensitivity. Verify that the 10 pF load capacitance aligns with the oscillator circuit design to prevent frequency deviation.

Part Context

This model belongs to the QT49S series of quartz crystals from QST. The series includes various frequencies such as 11.0592 MHz and 16.000 MHz, all sharing similar mechanical dimensions and electrical characteristics. The designation indicates a standard through-hole compatible footprint adapted for modern assembly processes.

Replacement Considerations

Direct substitutes include other 33.8688 MHz crystals with identical HC-49/US packages and matching electrical parameters. Verify compatibility with existing oscillator circuits before replacement.