QT325S-50.000MEIJ-T

Overview

The QT325S-50.000MEIJ-T is a quartz crystal resonator manufactured by QST, operating at a fundamental frequency of 50 MHz. It utilizes a glass-sealed SMD package with dimensions of 3.2 x 2.5 mm. The component features a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms maximum. Frequency stability is specified at ±10 ppm over the commercial temperature range of -20°C to +70°C.

Feature Summary

• Glass-sealed construction for enhanced environmental protection
• Surface-mount design optimized for automated assembly
• High frequency stability within specified temperature ranges

Applications

• Embedded communication systems requiring precise clock signals
• Microcontroller oscillator circuits
• Consumer electronics with space-constrained PCB layouts

Procurement Notes

Verify the suffix MEIJ against official QST documentation to confirm the specific stability class and temperature range. Ensure the required load capacitance matches the target circuit design. Confirm RoHS compliance status through current manufacturer declarations before finalizing procurement orders.

Selection Notes

Select this component when a 50 MHz reference is needed in a compact 3225 footprint. The ±10 ppm stability suits applications demanding moderate precision. Evaluate thermal requirements to ensure the -20°C to +70°C range meets operational needs. Compare ESR limits with oscillator driver strength capabilities.

Part Context

This part belongs to the QT325S series of surface-mount quartz crystals. The series offers various frequency options and stability grades. The glass-seal technology distinguishes it from epoxy-sealed alternatives, providing better long-term reliability in harsh environments.

Replacement Considerations

Cross-reference with other manufacturers offering 3225 glass-sealed 50 MHz crystals. Verify pin compatibility and electrical parameters such as ESR and load capacitance. Check for identical stability specifications across the full operating temperature range.