AB-1.8432MHZ-S-B4Z

Overview

The AB-1.8432MHZ-S-B4Z is a parallel fundamental quartz crystal oscillator manufactured by Abracon LLC. It operates at a nominal frequency of 1.8432 MHz with a frequency tolerance of ±30 ppm and a stability of ±50 ppm across the operating temperature range. The component utilizes an HC-49/U package designed for through-hole mounting, featuring resistance-welded construction. Key electrical parameters include a load capacitance of 18 pF, a drive level of 100 µW, and an equivalent series resistance (ESR) of 750 Ohms. It supports a wide frequency range and is RoHS compliant.

Feature Summary

• Parallel fundamental quartz crystal design
• Resistance welded construction for reliability
• HC-49/U through-hole package
• RoHS compliant manufacturing

Applications

• CPU clock generation
• Memory module timing
• Computer peripheral interfaces
• Data communication systems
• Data input-output machines

Procurement Notes

Verify the specific suffix codes against official Abracon documentation to ensure correct tolerance and stability ratings. Confirm that the HC-49/U package dimensions match the target PCB footprint requirements. Check for RoHS compliance status in the latest datasheet revision. Ensure the drive level specifications align with the host circuit's output capabilities to prevent over-driving the crystal.

Selection Notes

Select this component when a fundamental mode crystal is required for low-frequency applications around 1.8432 MHz. The HC-49/U package is suitable for through-hole assembly processes. Consider the 750 Ohm ESR value when designing the oscillator circuit to ensure proper startup conditions. This part is appropriate for general-purpose computing and data processing equipment where moderate precision is sufficient.

Part Context

This crystal belongs to Abracon's standard HC-49/U series, widely used in legacy and modern electronics requiring stable clock signals. The model represents a fundamental resonance device, distinct from overtone crystals used for higher frequencies. It is commonly found in embedded systems, microcontroller boards, and industrial control panels.

Replacement Considerations

Direct substitutes must maintain the 1.8432 MHz frequency, HC-49/U package, and similar electrical characteristics. Verify compatibility with existing oscillator circuits before substitution.

FAQ

What is the operating mode of this crystal?

It is a parallel fundamental quartz crystal.

What is the maximum drive level?

The maximum drive level is 100 µW.