QT121S-37.400METQ-T

Overview

The QT121S-37.400METQ-T is a quartz crystal resonator manufactured by QST, designed for surface-mount applications. It operates at a fundamental frequency of 37.4 MHz with a frequency tolerance of ±30 ppm. The device features an 8 pF load capacitance and utilizes a 4-SMD, No Lead package configuration. This component serves as a precise timing reference in electronic circuits requiring stable oscillation frequencies.

Feature Summary

• Provides stable oscillation at 37.4 MHz
• Compact surface-mount design for automated assembly
• Maintains frequency accuracy within ±30 ppm tolerance

Applications

• Microcontroller clock sources
• Communication module timing references
• Digital signal processing circuits

Procurement Notes

Verify the specific ordering suffix METQ against official QST documentation to confirm pinout and electrical characteristics. Ensure compatibility with the target circuit's load capacitance requirements before procurement. Cross-reference the part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when a 37.4 MHz frequency is required with standard ±30 ppm tolerance. The 4-SMD package suits space-constrained designs. Confirm that the system impedance matches the 8 pF load capacitance specification to ensure accurate frequency operation without external trimming.

Part Context

This part belongs to QST's QT121S series of surface-mount crystals. The series offers various frequencies and package options for timing applications. The QT121S line is engineered for reliability in consumer and industrial electronics, providing consistent performance across temperature ranges typical for commercial use.

Replacement Considerations

Direct substitutes must match the 37.4 MHz frequency, 4-SMD package, and 8 pF load capacitance. Verify equivalent tolerance ratings from other manufacturers such as ECS or TXC. Ensure mechanical footprint compatibility to maintain PCB layout integrity during replacement.