International Business Machines Corporation

Thomas H Lewis

Matthew Stephen Kelly

Mitchell G Ferrill

Curtis T Grosskopf

Wen Wei Low

Voya Rista Markovich

Jeffrey Donald Gelorme

Konstantinos I Papathomas

Alfred Viehbeck

Jeffrey Curtis Hedrick

Stephen L Tisdale

Stephen Joseph Fuerniss

For a printed circuit board assembly ('PCBA') selected electronic components are highlighted on a graphic representation of the PCBA on a display of a computer system. The components are selected responsive to temperature and time limits of the selected components. Ones of the highlighted components are associated to respective temperature sensors on the PCBA. Responsive to where the one or more additional ones of the highlighted components are located on the PCBA relative to the at least one of the respective temperature sensors, one or more additional ones of the highlighted components are associated with at least one of the respective temperature sensors. The computer system receives data for respective signals indicating temperatures encountered by the respective temperature sensors when the PCBA is heated in a manufacturing process. The computer system shows whether any of the time and temperature limits were exceeded during the manufacturing process.

Technology for temperature sensitive components in thermal processing

A method for printed circuit board design of temperature sensitive components includes a scrub tool receiving a list of part numbers for electronic components of a printed circuit board assembly ('PCBA'). The scrub tool sends one or more queries for finding temperature and time limits of the electronic components to a database. A mapping tool receives a selection of one or more part numbers responsive to the one or more queries, wherein the selection is responsive to the temperature and time limits. The mapping tool sends a data structure to a physical design tool which is configured with physical design data for generating a graphic representation of the PCBA. The data structure from the mapping tool provides the received selection of one or more part numbers and configures the physical design tool to highlight components having part numbers of the selection on the PCBA graphic representation.

Disclosed is an admixture which is curable to form a crack resistant, photosensitive polycyanurate resist. Also disclosed is a structure for its use and process of making. The resist can be tailored to be either positively or negatively sensitive to actinic radiation. Because of its improved thermal and mechanical properties, the cured resist is suitable for use at high temperature, such as in electronic packaging applications.

Toughened photosensitive polycyanurate resist, and structure made

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Apex, NC, United States of America

Thomas H Lewis