Littelfuse, Inc. announced the release of the 3425L Series SMD resettable PPTCs (Polymeric Positive Temperature Coefficient) overcurrent circuit protection devices. The latest 3425L Series SMD PPTCs is an extension of the Littelfuse PolySwitch family of resettable overcurrent protection devices, which provides resettable, high-voltage overcurrent protection in a compact, surface-mounted 8763 mm (3425 mils) size. The […]
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eFuses protect circuits from voltage, current, and shorts
Littelfuse, Inc. announced the latest release of four versatile circuit protection devices in the eFuse Protection ICs product line. The latest eFuse Protection ICs utilize an innovative design ideal for a wide range of power inputs (3.3V to 28V) with highly integrated protection. These semiconductor-based electronic fuses provide robust overvoltage, overcurrent, short circuit, and inrush […]
High-surge-rated SMD TVS diodes boast small package size
Littelfuse, Inc. announced the new SMTOAK2 TVS Diode Series. Many of today’s high-power, high surge rating TVS diodes are only available in axial leaded packages. The compact, 2 kA 8/20 μs rated, surface-mount package SMTOAK2 TVS Diode Series allows electronics designers to achieve a more robust transient voltage, overvoltage protection, and lightning protection system while […]
SMD TVS diodes feature higher surge handling for aerospace, avionics apps
Littelfuse, Inc. announced the new 5.0SMDJxxS-HRA TVS Diode Series. The high-reliability TVS diodes are designed, manufactured, and screened to provide robust overvoltage protection, with low early failures and zero degradation over continuous surge events. Today’s aircraft use more and new composite materials, thus requiring higher-level lightning protection for all electrical and electronic equipment. The 5.0SMDJxxS-HRA is […]
Electronic fuse ICs provide protection, sensing, and control features
Littelfuse, Inc. announced the new eFuse Protection ICs product line, a series of four versatile circuit protection devices. The eFuse Protection ICs utilize an innovative design that provides a wide range of power inputs (3.3V to 28V) and integrated protection. In addition to overvoltage protection, these electronic fuses protect against overcurrent, short circuit, inrush current, […]
Where depletion-mode power MOSFETs excel
Depletion-mode MOSFETs have qualities that let them work well in several kinds of power-handling circuits. Aalok Bhatt, José Padilla, Raymon Zhou • Littelfuse, Inc. Most MOSFETs are enhancement-mode (EM) devices: When their gate-source voltage is zero, they don’t conduct. When the need is for a switch that is normally on when there is no power […]
Protect cellular base stations from electrical hazards
The next generation of cellular communications, the 5G network, will help the IoT reach its full potential. IoT includes many devices and physical objects such as home appliances, vehicles, and “smart” cities. IoT connectivity depends on the advancements of the 5G network compared to the current 4G LTE networks. The download speed of up to […]
Thyristors provide high surge-current overvoltage protection in compact package
The new Pxxx0S3N SIDACtor Protection Thyristor Series safeguards exposed interfaces in industrial and ICT applications, including RS-485 data interfaces and ac/dc power supplies. Providing equipment in harsh environments with increased protection from severe overvoltage transients assists designers in complying with regulatory requirements. Available in a compact, DO-214AB (SMC) package, the Pxxx0S3N SIDACtor series is designed […]
High-voltage cartridge fuse features AEC-Q200-compliant overcurrent protection
The new 828 Series High-Voltage Cartridge Fuses are designed and tested to meet the circuit protection needs of compact automotive electronics, specifically Electric Vehicle (EV) applications. These robust fuses are Littelfuse internal AEC-Q200 compliant, providing a high interrupting rating (10 kA @ 1,000 Vdc), which is ideal for the On-Board Chargers (OBCs) and Power Distribution […]
Design tips for high-voltage protection in EVs and hybrids
The primary goal of EV protective circuits: Keep vehicle occupants safe day-to-day and first-responders protected if the worst happens. Michael Zimmermann, Littelfuse, Inc. The 12-V automotive battery may become a relic of the past as electric vehicles (EV) and hybrid cars gain market share. EVs and hybrid vehicles use battery packs of at least 500-V […]
