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THREAT: OVERLOADS/SHORT-CIRCUIT CURRENTS
Sustained overloads will cause circuit components to overheat, potentially leading to catastrophic and uncontrolled failures of the vehicle's electrical system. Short circuits can surpass the capabilities of the wires, connectors, etc. in the power circuit, which can also lead to uncontrolled failures or possibly a thermal event.
Resettable PPTC Overcurrent Protection Devices
Littelfuse Polymeric Positive Temperature Coefficient (PPTC) devices are widely used in automotive applications like wiring harness and network protection, communication and infotainment systems, and EV battery management systems. Unlike Fuses, these devices provide resettable protection for automotive electronics against damage from harmful overcurrent surges. Bladed, leaded, and surface-mount form factors are available for automotive applications.
Fuses
Automotive Fuses protect components or circuits by melting under overcurrent conditions to interrupt current flow. In addition to withstanding rapid temperature cycles and vibration, they must offer long-term stability and AEC-Q test compliance. Littelfuse offers an unparalleled range of automotive Fuses, from cartridge and blade styles to surface-mount chip Fuses.
Power Semiconductors
Power semiconductor devices enable the next generation of vehicles by managing power flexibly. Fast-switching SiC technology increases power density and energy efficiency in systems like on-board battery chargers. The Littelfuse power semiconductor portfolio includes Thyristors, Rectifiers, Fast Recovering Diodes, IGBTs, and wide band gap devices.
S OPPORTUNITY: ELECTRIFYING THE VEHICLES OF TOMORROW
Researchers predict that by 2025, a typical high-end vehicle will contain more than $6,000 worth of electronics. The growing interest in self-driving vehicles, vehicle-to-vehicle and vehicle- to-infrastructure communications, and on-board safety, convenience, and environmental features ensures that the sheer number of electronic components per vehicle will continue to expand rapidly. Additionally, as hybrid-electric vehicles become increasingly popular, power semiconductors will be critical to the next generation of Battery Management Systems and on-board/off-board charging systems.
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