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Littelfuse HMOV Varistors

The HMOV™ Varistor Series from Littelfuse can operate at ambient temperatures up to 125°C with 2500V isolation voltage, an advance made possible through the use of a new silicone coating technology. Competitive epoxy-coated varistor designs are typically limited to maximum temperatures of just 85°C while similar phenolic coating designs have limited isolation voltages. This high operating temperature makes it possible to reduce end-product production costs by eliminating the need for an additional heat sink or potting process. The combination of high operating temperature, high surge current absorption of up to 10kA (8/20µs), reliability confirmed by a 1000-cycle thermal shock test, …

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Littelfuse Series 507 Compact 650VDC Cartridge Fuses

The new 507 Series Cartridge Fuse from Littelfuse is ideal for over-current protection in high-voltage DC power circuits. Its small footprint simplifies creating compact designs for power conversion equipment that demands higher operating efficiencies. It is available in both standard cartridge and axial-leaded designs, is RoHS compliant and 100% lead free.Typical applications for the 507 Series include over-current protection for variable frequency drives (VFDs), photovoltaic (PV) inverters, DC-DC converters, high-voltage power supplies, etc.FEATURES High DC voltage rating of 650V with interrupting rating of 150A@650VDC in a compact 6x32mm footprint 1A – 8A current rating Operating temperature from −55°C to +125°C …

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Littelfuse Shock-Block Ground-Fault Circuit Interrupter

The Littelfuse Industrial Shock-Block™ SB6100 is vital where people, equipment, and water are present. This product is the first and only ground-fault circuit interrupter (GFCI) to be listed UL943C Standard for People Protection. Additionally, it is the only GCFI device on the market that monitors the continuity of the ground circuit.FEATURES Protects personnel from electrical shock where standard GFCI breakers and receptacles have never been available. Offers an all-in-one solution to detect leakage current and interrupt the power for loads up to 100A. Includes overcurrent protection provided by Littelfuse Class T fuses, eliminating the need to install separate contactor protection, …

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Littelfuse SMF3.3 TVS Diodes for Sensitive Electronics

Littelfuse, Inc., the global leader in circuit protection, has introduced a series of TVS Diodes designed specifically to protect sensitive portable and compact electronics from voltage transient events. The SMF3.3 Series TVS Diode combines 200W surge capability, low reverse standoff voltage (3.3V), and low clamping voltage (6.8V) with a small-footprint, low-profile SOD-123FL plastic package for a variety of portable and compact electronic products.The SMF3.3 Series is ideal for low voltage applications such as the protection of VCC busses and other vulnerable circuits used in portable devices, portable hard drives, notebooks, POS terminals, solid-state drives (SSDs), power supplies, and monitors.“The SMF3.3 …

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Littelfuse IGBT Power Module

Littelfuse introduces the MG12600WB-BR2MM Series, the latest addition to their IGBT Module Power Semiconductor portfolio. The new 1200V, 600A Half-Bridge IGBT Module Series offers designers a substantially higher current rating than the portfolio’s previous maximum current rating (450A), offering the high efficiency and fast switching speeds of modern IGBT technology in a robust and flexible format. The module’s compact (152 x 62 x 17 mm) package simplifies thermal management and allows for less complex, more elegant system designs. This multi-chip module reduces solder joint and PC board space requirements. The WB configuration package is available in various current ratings for …

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Littelfuse SIDACtor Protection Thyristors

A new series of SIDACtor® Protection Thyristors in surface-mount DO-214AB packages from Littelfuse are designed to protect low-data-rate interfaces and outdoor data interfaces in general industrial applications.The Pxxx0S3NLRP Series provides robust surge protection performance at up to 2.5kA, while maintaining much lower switching threshold (VS) and on-state voltage (VT) than traditional protection solutions like Gas Discharge Tube (GDT) technology. They also offer crowbarring power fault protection superior to the typical clamping device. Applications include protection for general industrial outdoor data interfaces, such as short loop interfaces (<10m) located at base station sites, and low-data-rate interfaces such as RS-232 or RS-423.FEATURES …

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Littelfuse 470 / 476 Series Subminiature SMT Fuses

New 470 and 476 Series NANO2® Subminiature Fuses from Littelfuse withstand surge and provide circuit protection against overload conditions for downstream components. Both feature highly compact surface mountable packages for high design flexibility in space-constrained applications; the SMT design supports higher placement speed and higher yields during product manufacturing. With a 1206 footprint, the 470 Series Fuse is the smallest 125VAC-rated surface-mountable fuse available in the Littelfuse portfolio; The 476 Series is a family of 250VAC-rated surface mountable fuses in a compact 2410 footprint. It is the smallest SMT fuse with this high voltage rating and, like the 470 Series, …

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Littelfuse 777 Series Axial Lead Fuses

Littelfuse, Inc., the global leader in circuit protection, has introduced the compact 777 Series Fuse to provide protection for higher-wattage wall-mount chargers for battery-powered electronic equipment. Although chargers for earlier generations of mobile phones had relatively low wattage (typically about 5W), today’s highly compact chargers must often be able to handle 10-15W of power, which requires withstanding higher levels of current. The axial lead, 3.6mm x 9mm 777 Series Fuse incorporates an innovative type of filler material that provides a finely tuned balance between the surge tolerance necessary to prevent nuisance fuse tripping with the fuse’s ability to open safely …

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Littelfuse SB6100 Industrial Shock-Block GFCI

The Industrial Shock-Block (ISB) from Littelfuse is a personnel protection device designed to meet the new requirements for special-purpose ground-fault circuit interrupters (GFCIs) defined by UL 943C.  ISB is the first and only permanently connected Class C and Class D GFCI on the market.  Class C GFCIs are introduced to be used on systems where the line-to-line voltage is 480V or less with a trip level of 20mA, while Class D GFCI is intended to be used on 600V systems.  These improvements to the standard Class A GFCI (6mA trip level used on 240V or less systems) were made to …

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