7A-20.000MBBK-T

Crystals Overview

The TXC Corporation 7A-20.000MBBK-T is a fundamental parallel quartz crystal resonator designed for surface-mount applications. It operates at a nominal frequency of 20 MHz with a load capacitance of 20 pF and a frequency tolerance of ±50 ppm. The component features an equivalent series resistance (ESR) of 50 Ohms and supports a drive level of 1 mW. It is housed in a compact 2-SMD package measuring 5.00 mm in length, 3.20 mm in width, and 1.35 mm in height. The device is rated for operation within a temperature range of -20°C to +70°C.

Crystals Feature Summary

• Fundamental mode parallel resonance quartz crystal construction
• Surface-mount compatible 2-SMD leadless package design
• Integrated enable/disable functionality capability via circuit design

Crystals Applications

• General purpose clock signal generation in digital circuits
• Microcontroller and microprocessor system timing references
• Communication interface synchronization modules

Crystals Procurement Notes

This component is officially discontinued and no longer manufactured by TXC Corporation. Verification of availability should focus on surplus stock or authorized secondary market distributors. Buyers must confirm the authenticity of existing inventory and check for potential obsolescence notices. Replacement strategies should prioritize parameter-equivalent alternatives from other manufacturers to ensure supply chain continuity for ongoing production needs.

Crystals Selection Notes

Selection requires matching the 20 MHz frequency, 20 pF load capacitance, and ±50 ppm stability requirements. The 50 Ohm ESR limit must be compatible with the oscillator circuit design. The operating temperature range of -20°C to +70°C suits standard commercial environments. Due to discontinuation, engineers should evaluate alternative components that maintain identical electrical parameters and physical footprint dimensions for seamless integration.

Crystals Part Context

The 7A-20.000MBBK-T belongs to the TXC 7A series of fundamental quartz crystals. This series provides standard commercial-grade timing solutions with surface-mount packaging. The specific model denotes a 20 MHz variant with 20 pF load capacitance. It represents a legacy product line now superseded by newer generations or discontinued entirely, requiring substitution planning for active designs.

Crystals Replacement Considerations

The QT532G-20.000MBBK-T from QST is identified as a parameter-equivalent substitute.