Sidactor Protection Thyristor Products Page 15 SIDACtor Protection Thyristor Products

SIDACtor Protection Thyristors 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/23/17 Littelfuse is committed to being sensitive to customer expectations and providing quality products and services at a competitive price. In support of this commitment, Littelfuse will: Encourage quality awareness and quality performance in all associates at all levels of the company through management leadership; Promote the participation of all associates in making individual contributions to the quality improvement process; Support continuous quality improvements by providing our associates with necessary training, tools and information feedback to enable enhancement of the quality of our products and services; Develop relationships with suppliers who consistently demonstrate their ability to fulfill quality, price and delivery objectives that are mutually beneficial; and; Build quality into our products and services, striving for zero defects in everything we do, thereby reducing cost and increasing Total Customer Satisfaction . In support of and in addition to the above policies, Littelfuse is committed to the following eight quality management principles: Customer Focus: Littelfuse depends on its customers and makes every effort to understand their current and future needs. Littelfuse strives to meet customer requirements and to exceed customer expectations. Leadership: Leaders at Littelfuse establish unity of purpose and direction for the organization. Our leaders should create and maintain the internal environment in which our associates can become fully involved in achieving company objectives. Involvement of People: Associates at all levels are the essence of Littelfuse. Their full involvement enables their abilities to be used for the benefit of the company. Process Approach: The results desired by Littelfuse are achieved more efficiently when activities and related resources are managed as a process. System Approach to Management: Identifying, understanding and managing interrelated processes as a system contributes to effectiveness and efficiency in achieving Littelfuse objectives. Continual Improvement: Continual improvement of the overall performance should be a permanent objective of Littelfuse. Quality and Reliability Assurance Factual Approach to Decision Making: Effective decisions are based on the analysis of data and information at Littelfuse. Mutually Beneficial Supplier Relationships: Littelfuse and its suppliers are interdependent and a mutually beneficial relationship enhances the ability of both to create value. Littelfuse continually engages in processes designed to assure quality through all stages of production, including: Incoming Material Quality: Littelfuse vendor analysis programs provide stringent requirements before components are delivered to Littelfuse. In addition, purchased materials are tested rigidly at incoming inspection for specification compliance prior to acceptance for use. Process Controls: From silicon slice input through final testing, we use statistical methods to control all critical processes. Process audits and lot inspections are performed routinely at all stages of the manufacturing cycle. Parametric Testing: All devices are 100% computer tested for specific electrical characteristics at critical processing points. Final Inspection: Each completed manufacturing lot is sampled and tested for compliance with electrical and mechanical requirements. Reliability Testing: Random samples are taken from various product families for ongoing reliability testing. Finished Goods Inspection: Product assurance inspection is performed immediately prior to shipping. The design and production of Littelfuse devices is a demanding and challenging task. Disciplined skills coupled with advanced computer-aided design, production techniques, and test equipment are essential elements in Littelfuse's ability to meet your demands for the very highest levels of quality. All products must first undergo rigid quality design reviews and pass extensive environmental life testing. Littelfuse uses Statistical Process Control (SPC) with associated control charts throughout to monitor the manufacturing processes. Section continues on next page. Littelfuse Quality Policy Quality Management Principles Quality Assurance Design Assurance

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