9C-12.288MBBK-T

Crystals Overview

The TXC CORPORATION 9C-12.288MBBK-T is a surface-mount MHz crystal designed for general clock applications. It operates at a nominal frequency of 12.288 MHz with a frequency tolerance and stability of ±50 ppm. The component features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 40 Ohms. It utilizes the HC-49/US package, measuring 11.40 mm in length, 4.80 mm in width, and 4.10 mm in maximum height. The device supports fundamental mode operation and functions within a temperature range of -20°C to +70°C.

Crystals Feature Summary

• Surface-mount design utilizing the HC-49/US package format for automated assembly integration.

Crystals Applications

• General clock signal generation in electronic circuits

Crystals Procurement Notes

This component is officially discontinued and no longer manufactured by TXC Corporation. Verification of current availability should focus on identifying parameter-equivalent replacement parts from other manufacturers or checking remaining stock from authorized distributors. Designers must confirm that substitute components match the original electrical specifications, including frequency, load capacitance, and ESR, to ensure circuit compatibility.

Crystals Selection Notes

Selection requires confirmation that the application environment falls within the specified -20°C to +70°C operating temperature range. The ±50 ppm frequency stability must be sufficient for the target system's timing requirements. Designers should verify that the 20 pF load capacitance aligns with the oscillator circuit design and that the 40 Ohm ESR is compatible with the driving capability of the host microcontroller or logic gate.

Crystals Part Context

The 9C series represents TXC Corporation's line of standard MHz crystals. This specific model belongs to the HC-49/US form factor family, which is widely used in consumer electronics and industrial equipment. As a discontinued item, it was previously positioned as a cost-effective solution for basic timing needs where high precision was not critical.

Crystals Replacement Considerations

QT49S-12.000MBBK-T by QST is listed as a parameter-equivalent alternative.