QTM252-40.000MBA-T

Overview

The QTM252-40.000MBA-T is a standard crystal oscillator (XO) manufactured by QST, operating at a frequency of 40.000 MHz. It utilizes CMOS output technology and is powered by a 3.3V supply voltage. The device features a 4-SMD, no lead surface mount package with dimensions of 2.5mm x 2.0mm. It supports an enable/disable function via logic levels on Pin 1. The operational temperature range extends from -40°C to +85°C, ensuring reliability in various industrial environments.

Feature Summary

• CMOS low EMI output interface for signal integrity
• Enable/disable control functionality via logic input
• Compact SMD package design for space-constrained applications

Applications

• Industrial communication systems requiring precise timing
• Consumer electronics utilizing 3.3V logic interfaces
• Embedded systems needing stable clock sources

Procurement Notes

Verify the specific ordering suffix matches the required voltage and output type. Confirm package compatibility with PCB footprint designs. Ensure environmental ratings meet application temperature requirements. Check RoHS compliance status if restricted substances are prohibited. Validate supplier authenticity through authorized channels.

Selection Notes

Select this component when a 40MHz CMOS clock source is required within a 3.3V system. Consider the 4-SMD package size for layout constraints. Evaluate thermal performance against the specified -40°C to +85°C range. Compare electrical specifications with alternative oscillators if tighter stability or lower power consumption is needed.

Part Context

This part belongs to the QTM252 series of quartz crystal oscillators from QST. The series offers various frequencies and packages tailored for different electronic applications. The QTM252 variant specifically targets compact designs requiring reliable clock generation in consumer and industrial devices.

Replacement Considerations

Direct substitutes may include other 40MHz CMOS oscillators in similar SMD packages from manufacturers like Epson or NDK. Verify pinout compatibility and electrical parameters before substitution. Cross-reference datasheets for equivalent performance metrics.