QT252S-27.120MAHV-T

Overview

The QT252S-27.120MAHV-T is a surface-mount quartz crystal manufactured by QST, designed for precise frequency control in electronic circuits. It operates at a nominal frequency of 27.12 MHz with a frequency stability and tolerance of ±30 ppm. The component features a load capacitance of 8 pF and an equivalent series resistance (ESR) of 100 Ohms. It utilizes a 4-SMD, no-lead package with dimensions of 2.5 x 2.0 x 0.55 mm, suitable for automated assembly processes requiring compact footprint solutions.

Feature Summary

• Seam seal construction ensures long-term frequency stability and reliability
• Surface-mount design facilitates automated PCB assembly
• Optimized for low power consumption applications

Applications

• Wireless communication modules
• Microcontroller clock sources
• RF signal generation circuits

Procurement Notes

Verify the specific suffix HV against official QST documentation to confirm the exact load capacitance and tolerance specifications. Ensure compatibility with the target circuit's capacitive loading requirements before procurement. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and authenticity.

Selection Notes

Select this component when a 27.12 MHz reference is required with ±30 ppm stability. The 8 pF load capacitance must match the oscillator circuit design. Consider the 2.5x2.0 mm package size for space-constrained layouts. Verify thermal performance if operating outside standard commercial temperature ranges.

Part Context

This part belongs to the QT252S series of seam-seal crystals from QST. The series offers various frequencies and package options for general-purpose timing applications. The specific model denotes the 27.12 MHz variant with defined electrical characteristics for SMD mounting.

Replacement Considerations

Direct substitutes include other manufacturers' 27.12 MHz crystals with identical 8 pF load capacitance and ±30 ppm tolerance. Ensure mechanical footprint compatibility with the 4-SMD no-lead package. Verify ESR values to maintain oscillator startup conditions.