7B-8.000MBBK-T

Crystals Overview

The TXC Corporation 7B-8.000MBBK-T is an 8 MHz surface mount quartz crystal resonator designed for standard clock applications. It operates within a frequency tolerance of ±50 ppm and features a load capacitance of 20 pF with a maximum equivalent series resistance (ESR) of 100 Ohms in the base frequency range. The component utilizes a 4-SMD, no lead package measuring 5.00 mm x 3.20 mm. It supports a functional temperature range of -20°C to +70°C and is compliant with RoHS standards.

Crystals Feature Summary

• Compact 5.00 mm x 3.20 mm surface mount footprint suitable for space-constrained PCB layouts
• Optimized low ESR characteristics for reliable oscillation startup
• RoHS compliant construction for environmental safety

Crystals Applications

• Bluetooth portable devices
• Wireless communication equipment
• Digital cameras
• Personal Digital Assistants (PDA)
• Mobile phones

Crystals Procurement Notes

Verify the specific suffix 'BBK' against official datasheets to confirm the exact load capacitance and ESR specifications, as these parameters can vary significantly across different packaging or tolerance variants within the same frequency. Ensure compatibility with the target circuit's drive level requirements to prevent over-driving the crystal element. Cross-reference the manufacturer's latest documentation to confirm current production status and availability constraints.

Crystals Selection Notes

Select this component when a small form factor is required alongside moderate frequency stability. The 20 pF load capacitance is standard for many microcontroller interfaces, reducing external matching complexity. Consider the -20°C to +70°C operating range; if wider industrial temperatures are needed, verify if higher-grade variants from the same series are available. Ensure the application does not require automotive qualification standards.

Crystals Part Context

This part belongs to the 7B series of SMD crystals from TXC Corporation, which are engineered for high reliability in consumer electronics. The series is characterized by its small size and stable performance, making it a common choice for timing applications in portable devices where board real estate is limited but consistent clock signals are critical for data integrity.

Crystals Replacement Considerations

Direct substitutes must match the 8 MHz frequency, 20 pF load capacitance, and 4-SMD 5.0x3.2mm package dimensions. Verify that alternative manufacturers provide comparable ESR values and frequency stability tolerances. Check for identical mounting pad layouts to ensure seamless PCB integration without redesign.