QT325S-13.560MEIJ-T

Overview

The QT325S-13.560MEIJ-T is a surface-mount quartz crystal resonator manufactured by QST, designed for precision timing applications. It operates at a fundamental frequency of 13.56 MHz and utilizes an SMD package with dimensions of 3.2 x 2.5 mm. The component features a load capacitance of 18 pF and maintains a frequency tolerance and stability of ±10 ppm within the operating temperature range of -20°C to +70°C. Its equivalent series resistance (ESR) is specified at 80 Ω, ensuring reliable oscillation in standard circuit configurations.

Feature Summary

• Provides stable 13.56 MHz oscillation for RFID and wireless communication systems
• Compact surface-mount design suitable for space-constrained PCB layouts
• High frequency stability of ±10 ppm ensures accurate timing performance

Applications

• RFID reader and writer modules
• Wireless communication transceivers
• Industrial control system timing references

Procurement Notes

Verify the specific suffix MEIJ-T against official QST documentation to confirm the exact frequency tolerance and temperature range specifications. Ensure compatibility with the target circuit's load capacitance requirements before integration. Cross-reference part numbers carefully to avoid substitutions that may differ in electrical characteristics or physical dimensions.

Selection Notes

Select this component when a precise 13.56 MHz reference is required for RFID or NFC applications. The ±10 ppm stability suits most consumer and industrial electronics where tight frequency accuracy is necessary. Consider the 18 pF load capacitance requirement during schematic design to ensure proper oscillator startup and frequency accuracy.

Part Context

This part belongs to the QT325S series of surface-mount crystals from QST. The series offers various frequency options and stability grades, with the MEIJ-T suffix denoting specific performance parameters including 10 ppm stability and 18 pF load capacitance. It is commonly used in compact electronic devices requiring reliable high-frequency timing.

Replacement Considerations

Cross-reference tools indicate parametrically similar parts such as RH100-13.560-18-1010-TR. Verify that substitute components match the 13.56 MHz frequency, 18 pF load capacitance, and ±10 ppm stability requirements to maintain system performance.