Product Yield Engineer

Littelfuse is one of America's Best Mid-Sized Companies (Forbes) and has been named one of the Best Places to Work in Illinois (Best Companies Group) for 11 consecutive years. With its global headquarters in Chicago, Illinois, USA, Littelfuse is a leading, global manufacturer of electronic components serving more than 100,000 end customers across industrial, transportation, and electronics end markets. We have more than 17,000 employees with operations in 15 countries. From semiconductors to sensors switches to fuses and more we produce billions of electronic components that help our customers empower a sustainable, connected, and safer world. In 2021, Littelfuse had net sales of $2.1 billion.

We are seeking a driven and detail-oriented Product Yield Engineer to join ourProduct Yield Enhancement Team. In this key role, you will be responsible for maximizing yield and optimizing the performance of our Phase Control Thyristor product lines. You will act as the primary technical expert on device characteristics and work cross-functionally to understand how process variations impact product performance. Your initiatives will directly contribute to improved product quality, higher yields, and greater cost-effectiveness.

About the job:

Yield Optimization & Improvement

Analyze final test results and electrical characteristics to identify yield detractors and performance gaps.

Diagnose root causes of yield loss and drive product-specific yield improvement initiatives.

Monitor and report on key product performance metrics and yield trends.

Collaborate with Process Engineers to implement process changes that enhance yield and performance.

Present data-driven findings and recommendations to management and cross-functional teams.

Product Qualification & Release

Lead or support the qualification and release of new product numbers for manufacturing.

Qualify new process recipes from a device performance and yield perspective, ensuring compliance with product specifications.

Failure Analysis & Debugging

Conduct detailed failure analysis for in-process die and devices.

Determine and implement appropriate rework strategies.

Act as a Subject Matter Expert (SME) to support QA with the analysis of customer returns.

Provide deep product and device expertise to Process Engineers during process optimization.

Serve as a key technical liaison between design, process, and test teams to ensure manufacturability and high yield.

About you:

HNC/D in Electrical Engineering, Semiconductor Physics, Materials Science, or a related engineering discipline.

Proficiency in statistical analysis tools (e.g., JMP, Minitab) for yield analysis and correlation studies.

Strong analytical and problem-solving skills with the ability to translate device performance into process improvements.

Proven ability to manage and drive cross-functional projects to completion.

Working knowledge of lean and Six Sigma continuous improvement methodologies (DMAIC, A3, 8D, 5-Why's).

Excellent time management, self-motivation, and the ability to prioritize multiple projects.

Clear and confident communication skills for technical discussions and reporting.

Previous experience as a Product Engineer or Test Engineer in semiconductor manufacturing, ideally with knowledge of power devices (e.g., Thyristors, IGBTs, Diodes, GTOs).

Strong understanding of semiconductor device physics, electrical characterization, and failure analysis methods.

Hands-on experience with characterization equipment and final test platforms.

Six Sigma Green or Black Belt certification is a plus.

Littelfuse strives to empower associate growth and development in a culture of ongoing collaboration and respect for diverse global perspectives and expertise. Our Core Values - Respect, Customer Focus, Agility, Collaboration - support us in our mission to improve the safety, reliability, and performance of our customers' products that use electrical energy.

We are an equal opportunity employer that takes pride in giving every associate the means and courage to make a difference - everywhere, every day.