9B-27.000MAAJ-B

Crystals Overview

The TXC Corporation 9B-27.000MAAJ-B is a through-hole quartz crystal resonator operating at a nominal frequency of 27 MHz. It features an HC-49/S metal can package with radial termination, designed for robust mechanical stability. The component exhibits a frequency tolerance and stability of ±30 ppm at 25°C and across the operating temperature range of -20°C to +70°C. It supports a load capacitance of 18 pF and has an equivalent series resistance (ESR) of 30 Ohms. The unit operates with a drive level of 100 µW and includes a shunt capacitance (C0) of up to 7 pF.

Crystals Feature Summary

• Resistor-welded metal can construction provides enhanced environmental resistance and mechanical durability compared to standard epoxy-sealed packages.
• High mass production capability ensures consistent quality and reliability for high-volume consumer electronics manufacturing.
• Low equivalent series resistance facilitates reliable oscillator startup and stable operation in standard microcontroller circuits.

Crystals Applications

• Set-top box clock generation
• Television display driver boards
• Cable modem timing circuits

Crystals Procurement Notes

Verify current availability status as this specific part number may be subject to discontinuation or limited supply constraints. Confirm that the HC-49/S package dimensions and lead configuration match the target PCB footprint requirements. Ensure the 18 pF load capacitance aligns with the host circuit's design specifications to maintain the stated ±30 ppm frequency accuracy.

Crystals Selection Notes

Select this component when a durable, through-hole crystal is required for consumer-grade applications operating within the -20°C to +70°C range. The HC-49/S metal case offers superior shock and vibration resistance compared to plastic packages. Choose this model over surface-mount alternatives if manual assembly or rework capabilities are necessary. Verify that the 30 Ohm ESR is compatible with the oscillator circuit's loading requirements.

Crystals Part Context

This part belongs to the TXC 9B series of HC-49/S crystals, which are widely utilized in cost-sensitive consumer electronics. The series is characterized by its resistor-welded metal housing, offering a balance between performance and manufacturability. It serves as a standard timing solution for devices requiring moderate frequency precision and robust physical packaging.

Crystals Replacement Considerations

Direct substitutes include other HC-49/S 27 MHz crystals with matching 18 pF load capacitance and ±30 ppm tolerance. Verify that any replacement maintains the same radial lead spacing and metal can height to ensure mechanical compatibility.