QT161S-27.120MAHQ-T

Overview

The QT161S-27.120MAHQ-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precise timing applications in compact electronic circuits. It operates at a fundamental frequency of 27.12 MHz with a load capacitance of 10 pF. The component exhibits a frequency tolerance and stability of ±30 ppm at 25°C and across the operating temperature range of -40°C to +85°C. Housed in a small 4-SMD, no-lead package measuring 1.6 x 1.2 mm, it supports tape-and-reel packaging for automated assembly processes.

Feature Summary

• Seam-sealed construction ensures long-term frequency stability and environmental protection
• Fundamental mode operation provides accurate timing reference signals
• Compact surface-mount footprint facilitates high-density PCB layout

Applications

• Wireless communication modules requiring stable carrier frequencies
• Microcontroller clock sources for embedded systems
• RF transmitter and receiver oscillator circuits

Procurement Notes

Verify the specific suffix HQ against official QST documentation to confirm the exact load capacitance and temperature stability specifications. Ensure the ordering quantity matches the tape-and-reel packaging requirements for your production line. Cross-reference the datasheet revision date to guarantee compatibility with current manufacturing standards and RoHS compliance requirements.

Selection Notes

Select this component when a 27.12 MHz reference signal is required within a constrained board area. The ±30 ppm tolerance suits applications where moderate frequency accuracy is sufficient. Consider the 10 pF load capacitance requirement to ensure proper circuit matching. Evaluate the -40°C to +85°C range against the operational environment of the final device.

Part Context

This part belongs to the QT161S series of miniature quartz crystals from QST. The series is characterized by its small 1.6 x 1.2 mm package size, making it suitable for portable and space-sensitive electronics. The model number indicates the specific frequency and package configuration within this product family.

Replacement Considerations

Direct substitutes must match the 27.12 MHz frequency, 10 pF load capacitance, and 1.6 x 1.2 mm package dimensions. Verify that alternative components offer equivalent ±30 ppm stability across the -40°C to +85°C range. Confirm that the replacement part utilizes seam-sealed technology for comparable reliability.