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5 littelfuse.com Automotive As today's transportation and automotive solutions transform into tomorrow, electronics components are being rapidly integrated into the vehicle, enabling connections to the IoT world. Since inventing the first automotive fuse in 1930, Littelfuse has partnered with carmakers on circuit protection, sensors, and power- control solutions that have become the industry standard. This innovation level is present today and is responsible for Littelfuse leadership position in protecting systems throughout automotive and transportation applications. Prominent approaches to high-speed serial interfaces in this industry include Controller Area Network (CAN) bus and Local Interconnect Network (LIN) bus. CAN is a robust bus standard utilized in transportation applications. It is designed to allow microcontrollers (MCUs) and related components to communicate with each other's applications. This is done without requiring that the system have a host computer. LIN is a low-cost serial network protocol. It is employed to send data between various electronic solutions inside of vehicles. Littelfuse offers various solutions intended to address the wide gamut of situations that electronics are exposed to in these harsh environments. This includes AEC-Q101/Q200- qualified transient-voltage-suppression (TVS) diodes and varistors where the electrical resistance varies with applied voltage. Littelfuse automotive products also have their new resettable fuses, industry standards. Portable & Consumer Devices As a society, we are always on the go. Smartwatches and mobile phones go with us wherever the road leads us. We want to be unconnected, but sometimes we need to stop and reconnect. Universal Serial Bus (USB) is an industry-standard commonly utilized in portable and consumer devices. This standard outlines the appropriate specifications for cables and connectors and protocols for interfacing between computers, peripherals, and other devices. One of today's standard USB interfaces is Type C. It enables devices to transmit both power and data on a single cable in a standardized industry method. Littelfuse provides high-speed USB protections by delivering power and signals protection through an assortment of TVS diodes, and PolySwitch ® resettable positive temperature coefficients (PPTC) fuses devices such as the Littelfuse setP™ series. Industrial & Data Center This application area is pervasive. It touches on various disparate industries that connect to help us all produce and meet today's needs. Energy is power harnesses from electronic, chemical, or physical resources such as oil and gas, wind, sun, and the like. Energy conversion, transportation, and storage might be required. Building and construction projects require coordination, planning, and manufacturing. Mining operations locate resources necessary to produce goods and services, including silicon (Si) and associated compounds as are required for semiconductor and passive components and solutions to be made. Motors drive industrial machinery leveraging inputs to maximize outputs and provide high quality and consistency. Heating, ventilation, and air conditioning (HVAC) provide environmental comfort making life more enjoyable. Large server farms help power the internet and provide instant access to a wealth of information and connections. Industrial and data center applications are often interfaced with RS-485, Ethernet, and Power Over Ethernet (PoE). RS-485 is a standard balanced interconnecting cable and network topology. It provides the opportunity for interfaces to be point-to-point, multi-dropped, and multi-point. Ethernet is a way to connect computers into a localized cluster known as a local area network (LAN) or wide area network (WAN). Power over Ethernet (PoE, PoE+, and PoE++) builds upon Ethernet. It enables an Ethernet system to pass electric power along with data. Littelfuse provides RS-485 solutions that offer signal and power protections utilizing PTCs and TVS diodes. Fuses, Gas Discharge Tubes (GDTs), and TVS diodes safeguard power and signals where Ethernet is employed. ■ Littelfuse Everywhere Every Day