9C-4.000MAAJ-T

Crystals Overview

The TXC Corporation 9C-4.000MAAJ-T is a standard quartz crystal resonator operating at a fundamental frequency of 4.000 MHz. It features a frequency tolerance and stability of ±30 ppm within the commercial temperature range of -20°C to +70°C. The component utilizes an HC-49/S surface-mount package with dimensions of 11.5 mm in length, 5 mm in width, and 3.68 mm in height. It requires a load capacitance of 18 pF and exhibits an equivalent series resistance (ESR) of 30 Ohms. The device supports a maximum drive level of 100 µW and is designed for through-hole or surface-mount installation styles.

Crystals Feature Summary

• Standard HC-49/S surface-mount package design for compact circuit integration
• Fundamental mode operation providing stable timing signals at 4 MHz
• Commercial grade temperature range suitability for general electronic applications

Crystals Applications

• General purpose microcontroller clock sources
• Consumer electronics timing circuits
• Industrial control system oscillators

Crystals Procurement Notes

Verify current availability status as this component may be subject to discontinuation notices. Confirm RoHS compliance details directly with the manufacturer or authorized distributors prior to procurement. Ensure that the specific package variant matches the target PCB footprint requirements. Cross-reference the exact part number suffix to guarantee correct frequency and tolerance specifications.

Crystals Selection Notes

Select this component when a 4 MHz fundamental frequency with ±30 ppm stability is required for commercial temperature environments. The HC-49/S package offers a balance between size and performance for surface-mount designs. Consider the 18 pF load capacitance requirement to ensure proper oscillator circuit tuning. Evaluate the 30 Ohm ESR against the host oscillator circuit capabilities to guarantee reliable startup conditions.

Crystals Part Context

This part belongs to the 9C series of quartz crystals manufactured by TXC Corporation. The series is characterized by standard packaging options and reliable performance for mass-produced consumer and industrial devices. The 9C-4.000MAAJ-T specifically addresses the need for precise timing in low-frequency digital logic applications using a widely adopted surface-mount form factor.

Crystals Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.