9B-12.000MEEJ-B

Crystals Overview

The TXC CORPORATION 9B-12.000MEEJ-B is a fundamental frequency quartz crystal resonator operating at 12.000 MHz. It utilizes an HC-49/US through-hole package, measuring 11.5 mm in length and 5.0 mm in width. The component supports a load capacitance of 18 pF and offers a frequency tolerance of ±30 ppm within the commercial temperature range of -20°C to +70°C. It features a maximum equivalent series resistance (ESR) of 40 Ohms and operates with a specified drive level of 1 mW.

Crystals Feature Summary

• Fundamental mode quartz resonance for stable clock generation
• Standardized HC-49/US leaded package for easy PCB integration
• Commercial grade temperature stability suitable for general electronics

Crystals Applications

• Microcontroller system clock sources
• Communication interface timing circuits
• General-purpose digital logic timing references

Crystals Procurement Notes

Verify the specific tolerance requirement against the ±30 ppm specification, as tighter tolerances may require alternative part numbers. Confirm that the HC-49/US form factor aligns with the target PCB footprint and mounting constraints. Ensure the 18 pF load capacitance matches the oscillator circuit design to maintain accurate frequency performance.

Crystals Selection Notes

Select this component when a standard through-hole crystal is required for 12 MHz applications. The HC-49/US package provides robust mechanical stability compared to surface-mount alternatives. Consider the ±30 ppm tolerance sufficient for most non-critical timing applications where higher precision is not mandated by the system architecture.

Crystals Part Context

This part belongs to the 9B series of fundamental frequency crystals from TXC Corporation. The series is characterized by its use of the traditional HC-49/US housing, which remains a common standard in legacy and cost-sensitive designs. It serves as a basic timing element distinct from packaged oscillators or high-precision TCXO units.

Crystals Replacement Considerations

Substitutes must match the 12 MHz frequency, HC-49/US package, and 18 pF load capacitance. Verify that any replacement maintains the same ESR and drive level specifications to ensure circuit compatibility without modification.