AB-1.8432MHZ-B4Z

Overview

The Abracon AB-1.8432MHZ-B4Z is a parallel fundamental quartz crystal operating at a nominal frequency of 1.8432 MHz. It features a ±30 ppm frequency tolerance and ±50 ppm frequency stability over the operating temperature range. The component utilizes an HC-49/U package with through-hole mounting and a load capacitance of 18 pF. It operates within a temperature range of -20°C to +70°C, maintains a drive level of 100 µW, and exhibits an equivalent series resistance (ESR) of 750 Ohms.

Feature Summary

• Parallel fundamental quartz crystal construction
• Resistance welded sealing for environmental protection
• HC-49/U through-hole package design
• 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 'B4Z' against the manufacturer's official documentation to confirm exact tolerance and stability ratings, as suffixes often denote specific parameter variations. Ensure the HC-49/U package dimensions align with the target PCB footprint. Confirm RoHS compliance status if required by regulatory standards. Cross-reference the 18 pF load capacitance requirement with the oscillator circuit design to ensure proper frequency accuracy.

Selection Notes

Select this component when a 1.8432 MHz reference signal is required for fundamental mode operation. The HC-49/U package is suitable for applications requiring robust mechanical stability and through-hole assembly. Consider the ±30 ppm tolerance and ±50 ppm stability limits relative to system timing requirements. Verify that the 100 µW drive level is compatible with the host oscillator circuit to prevent over-driving the crystal.

Part Context

This part belongs to Abracon's standard HC-49/U crystal lineup, designed for general-purpose timing applications. It shares the physical form factor with other variants in the series but differs in electrical parameters such as tolerance and stability based on the ordering suffix. The 1.8432 MHz frequency is commonly used in digital systems requiring precise baud rate generation or clock division.

Replacement Considerations

Direct substitutes include the AB-1.8432MHZ-30-B4Z, which shares identical frequency and tolerance specifications. Other HC-49/U crystals from different manufacturers may be considered if they match the 18 pF load capacitance, 750 Ohm ESR, and operating temperature range.