7M-40.000MEEE-T

Crystals Overview

The TXC Corporation 7M-40.000MEEE-T is a surface-mount quartz crystal resonator operating at a fundamental frequency of 40 MHz. It features a frequency stability and tolerance of ±10 ppm, with a load capacitance of 12 pF and an equivalent series resistance (ESR) of 60 Ohms. The component utilizes a 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm x 0.7mm. It supports base harmonic operation mode and functions within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• High precision frequency stability with ±10 ppm tolerance
• Compact 4-SMD no-lead surface mount design
• Operates in fundamental base harmonic mode

Crystals Applications

• Precision timing circuits requiring high stability
• Embedded systems with strict clock accuracy needs
• Consumer electronics utilizing 40 MHz reference frequencies

Crystals Procurement Notes

Verify the specific suffix 'E' against the manufacturer's official part number guide to confirm exact load capacitance and tolerance specifications. Ensure compatibility with reflow soldering profiles for 4-SMD packages. Confirm RoHS3 compliance status through current datasheets before integration into production lines.

Crystals Selection Notes

Select this component when a 40 MHz fundamental mode crystal with ±10 ppm stability is required. Compare ESR values of 60 Ohms against circuit drive level requirements. Consider the 12 pF load capacitance for oscillator circuit matching. Evaluate the 3.2x2.5mm footprint against available PCB space constraints.

Crystals Part Context

This part belongs to the TXC 7M Series, which consists of seam-sealed SMD crystals designed for high-frequency stability. The series targets applications demanding precise timing in small form factors. The 7M designation indicates a specific family of miniature crystals optimized for modern surface-mount assembly processes.

Crystals Replacement Considerations

The 7B-40.000MEEQ-T is listed as obsolete. Potential substitutes include other 40 MHz crystals from the same manufacturer series, such as the 7M-40.000MEIE-T, provided electrical parameters match exactly.