HC49/SMD-BF12-30-18.432M-TR

Crystals Overview

The HC49/SMD-BF12-30-18.432M-TR is a parallel fundamental quartz crystal manufactured by Transko Electronics, Inc. It operates at a nominal frequency of 18.432 MHz with a frequency tolerance of ±30ppm and stability of ±50ppm. The component features a load capacitance of 12pF and an equivalent series resistance (ESR) of 40 Ohms. It utilizes the HC49/SMD package format and is supplied in tape and reel packaging for automated assembly processes.

Crystals Feature Summary

• Fundamental mode quartz crystal operation
• Surface-mount compatible HC49/SMD package
• Tape and reel delivery format

Crystals Applications

• General purpose timing circuits
• Microcontroller clock sources
• Digital communication interfaces

Crystals Procurement Notes

Verify the specific suffix codes against official Transko Electronics documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with reflow soldering profiles specified for the HC49/SMD form factor. Cross-reference part numbers carefully as minor suffix variations may indicate different load capacitance or tolerance ratings.

Crystals Selection Notes

Select this component when a standard 18.432 MHz reference is required for digital systems. The 12pF load capacitance must match the oscillator circuit design. Consider the 40 Ohm ESR value for drive level sensitivity. Verify that the surface-mount footprint aligns with the PCB layout requirements for the HC49/SMD case.

Crystals Part Context

This part belongs to the HC49/SMD series from Transko Electronics, representing surface-mount variants of traditional through-hole crystals. The series offers compact dimensions suitable for modern PCB designs while maintaining standard quartz crystal performance characteristics for frequency control applications.

Crystals Replacement Considerations

Direct substitutes require matching 18.432 MHz frequency, 12pF load capacitance, and HC49/SMD package dimensions. Verify ESR limits and tolerance grades. Consult manufacturer cross-reference lists for approved equivalents.