QT49S-15.000MBBK-T

Overview

The QT49S-15.000MBBK-T is a passive crystal oscillator manufactured by QST, housed in an HC49S package. It operates at a nominal frequency of 15 MHz with a load capacitance of 20 pF and a series resistance of 30 Ω. The component exhibits a frequency tolerance of ±50 ppm at 25°C and maintains stability within ±50 ppm across the operating temperature range of -20°C to +70°C.

Feature Summary

• Provides stable oscillation for digital circuits using quartz resonator technology
• Designed for surface-mount integration via the HC49S form factor
• Ensures consistent frequency performance under specified thermal conditions

Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing systems

Procurement Notes

Verify the specific suffix codes against official QST documentation to confirm exact electrical tolerances and temperature ranges. Ensure the HC49S package dimensions align with PCB layout requirements. Cross-reference the manufacturer's latest datasheet to validate compliance with current environmental standards before finalizing procurement orders.

Selection Notes

Select this component when a 15 MHz reference is required for applications demanding ±50 ppm stability between -20°C and +70°C. The HC49S package offers a balance of size and performance suitable for general-purpose digital logic. Consider the 20 pF load capacitance requirement to ensure proper circuit matching and optimal frequency accuracy.

Part Context

This part belongs to the QT49S series of quartz crystals from QST. The series includes various frequencies and tolerance levels, such as ±30 ppm or ±20 ppm options. The HC49S package is a standard form factor widely used in consumer electronics and industrial control systems requiring reliable timing references.

Replacement Considerations

Compatible substitutes include other 15 MHz crystals in HC49S packages with matching 20 pF load capacitance and similar stability ratings. Verify that alternative parts meet the same -20°C to +70°C operating temperature range and 30 Ω maximum series resistance specifications.