7B-8.000MAGJ-T

Crystals Overview

The TXC Corporation 7B-8.000MAGJ-T is a fundamental mode quartz crystal operating at a nominal frequency of 8 MHz. It features a frequency stability and tolerance of ±30 ppm, with a load capacitance of 18 pF. The component utilizes a 4-SMD, No Lead surface mount package measuring 5.00 mm in length, 3.20 mm in width, and a maximum height of 1.05 mm. It operates within a temperature range of -20°C to +70°C and has an equivalent series resistance (ESR) of 40 Ohms for this frequency band.

Crystals Feature Summary

• Fundamental mode operation for stable base frequency generation
• Compact 5.0 x 3.2 mm surface mount footprint optimized for space-constrained PCB layouts
• RoHS3 compliant construction supporting environmental regulatory standards

Crystals Applications

• Bluetooth portable devices
• Wireless communication equipment
• Digital cameras
• Personal Digital Assistants (PDAs)
• USB interface cards

Crystals Procurement Notes

This component is officially classified as obsolete and no longer manufactured by TXC Corporation. Procurement must focus on identifying valid substitute part numbers from the manufacturer's current portfolio. Verify that any replacement maintains identical electrical parameters, specifically the 8 MHz frequency, 18 pF load capacitance, and 4-SMD package dimensions to ensure circuit compatibility without redesign.

Crystals Selection Notes

Engineers should prioritize replacement options within the same manufacturer family to maintain supply chain consistency. Key verification points include matching the fundamental mode operation, ensuring the ESR remains within acceptable limits for the oscillator circuit, and confirming the operating temperature range meets the application requirements. Cross-reference pinout and mechanical tolerances to prevent assembly issues.

Crystals Part Context

The 7B series represents TXC Corporation's line of small-volume SMD crystals designed for consumer electronics and wireless applications. This specific model belongs to the discontinued 7B product line, which was widely used in compact devices requiring reliable timing references. The series is characterized by its缝焊 (seam-welded) construction and low profile, catering to the miniaturization trends in modern portable hardware.

Crystals Replacement Considerations

Public confirmed substitutes include 7M-8.000MAAJ-T and 7V-8.000MAAJ-T. These alternatives offer similar electrical specifications and package dimensions, serving as direct functional replacements for the obsolete 7B-8.000MAGJ-T.