7B-40.000MBBK-T

Crystals Overview

The 7B-40.000MBBK-T is a surface-mount quartz crystal manufactured by TXC Corporation, operating at a fundamental frequency of 40.0000 MHz. It features a load capacitance of 20 pF and a maximum series resistance of 40 Ohms. The component supports a frequency stability of ±50 ppm across an industrial temperature range of -40°C to +85°C. It utilizes a 4-SMD, no-lead package with dimensions of 3.2mm x 2.5mm x 0.6mm. The device is lead-free compliant and operates without active power supply.

Crystals Feature Summary

• Fundamental mode quartz resonator providing stable oscillation
• Surface-mount design for automated assembly integration
• Industrial temperature rating for reliable operation in harsh environments

Crystals Applications

• Microcontroller clock sources
• Communication module timing references
• General-purpose digital circuit synchronization

Crystals Procurement Notes

Verify the specific load capacitance requirement of the host oscillator circuit matches the 20 pF specification of this component. Confirm that the target application environment remains within the -40°C to +85°C operational range to ensure frequency stability compliance. Ensure the PCB footprint aligns with the 4-SMD no-lead package dimensions to prevent mechanical mounting issues during assembly.

Crystals Selection Notes

Select this component when a fundamental frequency crystal is required rather than a loaded oscillator. This part is suitable for circuits utilizing internal or external oscillator amplifiers. Consider the ±50 ppm stability limit against system timing requirements. The low profile and small footprint make it appropriate for space-constrained designs where standard through-hole crystals cannot be accommodated.

Crystals Part Context

This model belongs to the 7B series of surface-mount crystals from TXC Corporation. The series offers various frequency options within a standardized compact form factor. These components are designed to replace larger through-hole equivalents while maintaining similar electrical performance characteristics for general timing applications.

Crystals Replacement Considerations

Direct replacements must match the 40 MHz frequency, 20 pF load capacitance, and 4-SMD package. Verify that substitute parts support the same ±50 ppm stability and temperature range. Check manufacturer-specific mounting recommendations as soldering profiles may vary between suppliers.