9B-4.000MAAJ-B

Crystals Overview

The TXC Corporation 9B-4.000MAAJ-B is a through-hole crystal unit operating at a fundamental frequency of 4.000 MHz. It features a nominal load capacitance of 18 pF and maintains a frequency tolerance and stability of ±30 ppm. The component operates within a temperature range of -20°C to +70°C and exhibits an equivalent series resistance (ESR) of 30 Ohms. Packaged in the HC-49/S form factor, it measures 11.5 mm in length, 5 mm in width, and 3.68 mm in height. The device utilizes radial termination for PCB mounting.

Crystals Feature Summary

• Resistance welded construction ensures structural integrity and consistent performance characteristics across standard frequencies.
• HC-49/S package design facilitates reliable through-hole mounting with standardized dimensional profiles.
• Optimized low equivalent series resistance supports efficient circuit operation and signal integrity.

Crystals Applications

• General-purpose clock generation in digital logic circuits
• Microcontroller system timing references
• Communication interface synchronization modules

Crystals Procurement Notes

Verify current availability status as this component may be subject to discontinuation or limited supply conditions. Confirm RoHS compliance details directly with the manufacturer or authorized distributors prior to procurement. Ensure that the HC-49/S package dimensions align with existing PCB footprints and assembly requirements. Cross-reference the specific ordering suffix to guarantee exact electrical parameter matching for the target application design.

Crystals Selection Notes

Select this component when a 4 MHz fundamental frequency with ±30 ppm stability is required for through-hole applications. The 18 pF load capacitance must match the oscillator circuit design specifications. Consider the -20°C to +70°C operating range against environmental constraints. The HC-49/S package size dictates board space allocation. Verify ESR compatibility with the driving circuit to ensure stable oscillation start-up and maintenance.

Crystals Part Context

This part belongs to the TXC 9B series of resistance welded crystal units. These components are characterized by standard frequencies and lower cost compared to specialized variants. The series emphasizes reliability through welding techniques rather than sealing methods common in other packages. This specific model represents a standard industrial-grade option within the broader catalog of quartz resonators offered by the manufacturer.

Crystals Replacement Considerations

Direct substitutes require identical 4.000 MHz frequency, 18 pF load capacitance, and HC-49/S package. Check for compatible ESR values around 30 Ohms and ±30 ppm tolerance. Verify operational temperature range alignment. Alternative parts from other manufacturers must meet these electrical and mechanical specifications to ensure functional interchangeability without circuit redesign.

Crystals FAQ

What is the physical package type for the 9B-4.000MAAJ-B?

The component uses the HC-49/S package with radial termination pins.

Does this crystal support surface mount technology?

No, it is designed for through-hole mounting via radial leads.