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Circuit protection guide A Berkshire Hathaway Company www ttiinc com CIRCUIT PROTECTION Solutions Guide The Specialist in Electronic Component Distribution TTI Inc Global Headquarters Fort Worth Texas Why Buy from TTI Founded in TTI has steadily grown to

A Berkshire Hathaway Company www ttiinc com CIRCUIT PROTECTION Solutions Guide The Specialist in Electronic Component Distribution TTI Inc Global Headquarters Fort Worth Texas Why Buy from TTI Founded in TTI has steadily grown to become the world ? s leading interconnect passive electromechanical and discrete component distributor in the industry The company was founded on the premise that passive component purchasing could be made more e ?cient by o ?ering product specialization customer-driven service and proprietary supply chain solutions Product Experts Our unique specialization enables us to provide signi ?cantly better product knowledge to support manufacturing from design through production TTI ? s commitment to this specialty and our customers is as dedicated today as always Broader and Deeper Inventories TTI maintains extensive inventories stocking more than part numbers in North America and over globally ?? that ? s more interconnect passive electromechanical and discrete inventory available than from any one other source Advanced Inventory Management AIM Platform TTI ? s proprietary system is speci ?cally designed for managing IP E products and partnerships with premier manufacturers This allows us to provide the BOM coverage necessary to deploy comprehensive supply chain solutions that reduce total cost of ownership and mitigate line down risk Quality and Reliability TTI was the ?rst distributor to have all global warehouse locations ISO registered and currently are rated ISO and AS C in North America ISO EN C and EN in TTI Europe and ISO in TTI Asia Year after year customers rate our inventory availability on-time delivery and accuracy among the very best in the industry ?? call CALL TTI or visit us at www ttiinc com and discover why Circuit Protection Solutions Guide Table of Contents What is Circuit Protection Common Circuit Protection Threats Electrostatic Discharge ESD Applications www ttiinc com ? ? ? CALL TTI What is Circuit Protection Circuit protection is an insurance policy Most customers buy circuit protection never planning to use it but it is critical to protect circuits from unexpected damaging surges of current and voltage Two types of circuit protection are available overcurrent and overvoltage What is Overcurrent Protection An overcurrent condition is caused by excessive current more than the maximum amount of current a product is designed to withstand under normal conditions passing through a circuit Overcurrent conditions have the potential to cause severe damage to a circuit possibly leading to ?re Overcurrent protection is placing a component usually a standard fuse or a Polymer Positive Temperature Coe ?cient PPTC resettable fuse or a Positive Temperature Coe ?cient PTC thermistor in series with the device being protected Standard fuses interrupt the current ow and PPTC resettable fuses and PTC thermistors limit the current to an acceptable level during overcurrent conditions thus preventing catastrophic events When no overcurrent condition exists these products lie dormant within the circuit with a minimal amount of resistance to the circuit What Technologies are Available to Provide Overcurrent Protection TTI carries three technologies classi ?ed as overcurrent devices to provide protection