7B-18.432MBBK-T

Crystals Overview

The 7B-18.432MBBK-T is a MHz crystal manufactured by TXC Corporation, operating at a nominal frequency of 18.432 MHz with a load capacitance of 20 pF and a frequency tolerance of ±20 ppm. It features an equivalent series resistance (ESR) of 40 Ohms and operates in fundamental mode within a temperature range of -20°C to +70°C. The component utilizes a 4-SMD, no-lead package measuring 5.00 mm x 3.20 mm x 1.05 mm maximum height. It is RoHS compliant, meets MSL Level 1 standards, and is supplied in cut tape or reel packaging.

Crystals Feature Summary

• Surface-mount quartz crystal designed for standard commercial temperature ranges
• Fundamental mode operation with low equivalent series resistance
• Compliant with RoHS3 directives and unrestricted moisture sensitivity level

Crystals Applications

• Clock signal generation for microcontrollers and digital logic circuits
• Timing references for communication interfaces such as UART and SPI
• Frequency control in consumer electronics and embedded systems

Crystals Procurement Notes

This component is officially listed as End-of-Life (EOL) by the manufacturer. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors. Buyers must confirm that the specific batch matches the required specifications before acquisition, as discontinuation may limit future availability for production scaling.

Crystals Selection Notes

Engineers selecting this part should verify compatibility with the target circuit's load capacitance requirements. The 20 pF load capacitance and 40 Ohm ESR are critical parameters for oscillator stability. Designers must ensure the PCB footprint accommodates the 5.00 mm x 3.20 mm SMD package dimensions and allows for adequate thermal management within the specified operating temperature range.

Crystals Part Context

The 7B series represents a line of surface-mount crystals from TXC Corporation. This specific model belongs to the 7B family, characterized by its compact 4-SMD form factor. It serves as a timing element in various electronic assemblies, providing stable frequency output for synchronous digital systems requiring precise clock synchronization.

Crystals Replacement Considerations

Public confirmed substitute part numbers include 7M-18.432MEEQ-T and 7V-18.432MAAJ-T from TXC Corporation. These alternatives offer similar frequency and package characteristics but may differ in tolerance, temperature range, or loading capacitance. Verification against original design specifications is required before substitution.