QT121S-48.000METV-T

Overview

The QT121S-48.000METV-T is a quartz crystal resonator manufactured by QST Products, LLC. It operates at a nominal frequency of 48 MHz and utilizes a 4-SMD, no-lead package configuration. The component features a load capacitance of 8 pF and an equivalent series resistance (ESR) of 80 Ohms. Frequency stability and tolerance are specified at ±10 ppm within the operating temperature range of -20°C to +70°C. This device is designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Surface-mount quartz crystal resonator with 4-SMD no-lead packaging
• High frequency stability of ±10 ppm across the operational temperature range
• Optimized for low equivalent series resistance at 80 Ohms

Applications

• Precision clock signal generation in digital circuits
• Microcontroller and microprocessor system timing references
• Communication equipment requiring stable 48 MHz oscillation

Procurement Notes

Verify the specific suffix METV-T against official QST documentation to confirm the exact tolerance and temperature range specifications. Ensure compatibility with the target PCB footprint for 4-SMD no-lead packages. Cross-reference the load capacitance requirement of 8 pF with the circuit design to maintain accurate frequency performance. Confirm that the ESR value aligns with the oscillator circuit's drive level limitations.

Selection Notes

Select this component when a 48 MHz reference with tight ±10 ppm stability is required for -20°C to +70°C environments. The 4-SMD form factor suits automated assembly processes. Consider the 8 pF load capacitance and 80 Ohm ESR when designing the oscillator circuit to ensure reliable startup and frequency accuracy. Compare against other QST series options if wider temperature ranges or different tolerances are needed.

Part Context

This part belongs to QST's line of quartz crystal resonators, which are passive timing devices used to provide stable frequency references. The QT121S series specifically targets compact electronic designs requiring surface-mount solutions. These components are essential for synchronizing data transmission and processing operations in modern electronics.

Replacement Considerations

Consult QST official documentation for direct substitutes with identical electrical parameters. Verify that any alternative maintains the 48 MHz frequency, 8 pF load capacitance, and ±10 ppm tolerance. Ensure the replacement supports the same 4-SMD no-lead package dimensions for mechanical compatibility.