9B-20.000MAAJ-B

Crystals Overview

The 9B-20.000MAAJ-B is a fundamental mode quartz crystal resonator manufactured by TXC Corporation, designed for surface-mount applications within the HC-49/S form factor. It operates at a nominal frequency of 20.000 MHz with a load capacitance of 18 pF and a frequency tolerance of ±30 ppm. The component supports an operating temperature range from -20°C to +70°C. Key electrical specifications include a maximum equivalent series resistance (ESR) of 50 ohms and a shunt capacitance of 4.0 pF. The device utilizes a ceramic package construction and is compliant with RoHS standards.

Crystals Feature Summary

• Fundamental resonance mode operation for stable frequency generation
• HC-49/S surface-mount package configuration
• Ceramic housing construction for mechanical durability

Crystals Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for microcontroller systems
• Synchronization components in communication interfaces

Crystals Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official part number guide to confirm that it denotes the correct packaging or tape-and-reel configuration rather than a functional deviation. Ensure the requested quantity aligns with standard manufacturing pack sizes. Cross-reference the datasheet revision date to guarantee compatibility with current production requirements and regulatory compliance standards.

Crystals Selection Notes

Select this component when a 20 MHz timing source with ±30 ppm stability is required in a compact HC-49/S footprint. The 18 pF load capacitance specification must match the oscillator circuit design. Consider the -20°C to +70°C temperature range suitability for the intended environment. Verify that the fundamental mode operation meets the phase noise and startup time requirements of the target application compared to higher-order modes.

Crystals Part Context

This part belongs to the 9B series of quartz crystals produced by TXC Corporation. The series typically features ceramic packages and is engineered for cost-effective mass production. The 9B designation generally indicates a specific size and lead configuration standardized across various frequencies within the product line, ensuring consistent mounting footprints for designers.

Crystals Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Direct replacements require matching the 20 MHz frequency, 18 pF load capacitance, ±30 ppm tolerance, and HC-49/S package dimensions. Consult the manufacturer's official substitution list for verified alternatives.