QT325S-27.000MAHJ-T

Overview

The QT325S-27.000MAHJ-T is a surface-mount quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 27 MHz. It features a frequency stability and tolerance of ±30 ppm at 25°C and across the -40°C to +85°C temperature range. The component utilizes an 18 pF load capacitance and exhibits an equivalent series resistance (ESR) of 50 Ohms. Housed in a compact 4-SMD, No Lead package with dimensions of 3.2 mm x 2.5 mm x 0.7 mm, it supports base harmonic operation mode.

Feature Summary

• Seam seal construction for enhanced environmental protection
• Compact 4-SMD no-lead surface mount footprint
• Wide operating temperature range capability

Applications

• RF communication modules requiring 27 MHz reference
• Wireless sensor networks
• Industrial control systems

Procurement Notes

Verify the specific suffix 'MAHJ-T' against official QST documentation to confirm pin configuration and sealing type. Ensure the selected variant matches the required 50 Ohm ESR specification for circuit compatibility. Cross-reference the datasheet for moisture sensitivity level and RoHS compliance status prior to integration.

Selection Notes

Select this component when a 27 MHz fundamental frequency crystal with ±30 ppm stability is required in a small 3.2x2.5 mm package. Consider the 50 Ohm ESR value for oscillator circuit design. Verify that the 18 pF load capacitance aligns with the host system's oscillator requirements.

Part Context

This part belongs to the QT325S series of seam-seal quartz crystals from QST. The series offers various frequencies in a standardized 4-SMD no-lead form factor, designed for applications demanding reliable performance in space-constrained electronic devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.