9B-4.000MAAE-B

Crystals Overview

The TXC Corporation 9B-4.000MAAE-B is a fundamental mode quartz crystal resonator designed for through-hole mounting in the HC-49/US package. It operates at a nominal frequency of 4 MHz with a frequency stability and tolerance of ±30 ppm. The component features a load capacitance of 12 pF and an equivalent series resistance (ESR) of 150 Ohms. It supports a drive level of 100 µW and functions within a temperature range of -20°C to +70°C. Physical dimensions are 11.5 mm in length, 5 mm in width, and 3.68 mm in height.

Crystals Feature Summary

• Fundamental mode operation ensures precise frequency generation
• Through-hole radial termination facilitates standard PCB assembly
• HC-49/US package provides mechanical robustness

Crystals Applications

• Microcontroller clock circuits
• Digital logic timing references
• Communication interface synchronization

Crystals Procurement Notes

Verify RoHS compliance status and datasheet revisions before integration. Confirm that the 12 pF load capacitance matches the target oscillator circuit requirements. Check for discontinuation notices as availability may be restricted.

Crystals Selection Notes

Select this component when a 4 MHz fundamental frequency with ±30 ppm stability is required. Ensure the application circuit accommodates the 150 Ohm ESR and 12 pF load capacitance. Verify that the operating temperature range meets environmental constraints.

Crystals Part Context

This part belongs to the TXC 9B series of general-purpose crystals. It utilizes the standard HC-49/US housing common in legacy and industrial electronics. The series offers various frequencies and load capacitances for diverse timing applications.

Crystals Replacement Considerations

Direct substitutes must match the 4 MHz frequency, 12 pF load capacitance, HC-49/US package, and ±30 ppm stability. Verify pin compatibility and electrical parameters for cross-reference.