QT216S-40.000MAAJ-T

Overview

The QT216S-40.000MAAJ-T is a surface-mount quartz crystal oscillator manufactured by TXC Corporation, marketed under the QST brand designation in certain distribution channels. This component operates at a fundamental frequency of 40 MHz with a load capacitance of 18 pF. It features frequency stability tolerances of ±30 ppm for both initial accuracy and temperature drift. The device is designed for operation within an ambient temperature range of -20°C to +70°C and utilizes a compact 4-SMD, No Lead package configuration suitable for automated assembly processes.

Feature Summary

• Fundamental mode quartz crystal resonance providing stable timing reference
• Surface-mount 4-SMD no-lead package design for automated PCB assembly
• Temperature-compensated stability within specified industrial operating range
• Standard 18 pF load capacitance compatibility with common oscillator circuits

Applications

• Embedded system clock generation
• Industrial automation control units
• High-power motor control cabinet timing references

Procurement Notes

Verify manufacturer origin as TXC Corporation despite QST branding in some listings. Confirm package type matches 4-SMD No Lead specifications. Ensure temperature grade aligns with -20 to +70C requirement. Validate frequency tolerance meets ±30ppm system needs. Check RoHS compliance status via official datasheet.

Selection Notes

Select this component when a 40 MHz fundamental frequency crystal is required for space-constrained designs. The 18 pF load capacitance suits standard microcontroller interfaces. Consider the -20 to +70C operating range for general industrial environments. Verify package compatibility with existing footprint designs before integration.

Part Context

This part belongs to the QT216S series of surface-mount crystals from TXC Corporation. The series offers various frequency options including 26 MHz, 27 MHz, and 40 MHz variants. These components are designed for applications requiring precise timing in compact electronic assemblies. The specific model denotes the 40 MHz variant with standard stability parameters.

Replacement Considerations

Compatible substitutes include other 40 MHz SMD crystals with 18 pF load capacitance and similar stability ratings. Verify pinout compatibility and thermal characteristics when cross-referencing. Ensure replacement parts meet the same -20 to +70C operating temperature specifications.