The LST Varistor series is constructed with a proprietary thermally protected varistor technology (TMOV) developed by Littelfuse. This new varistor incorporates both a built-in thermal disconnect function and electric arc shield. This combination provides additional robust protection to prevent catastrophic failure and fire hazard even under the extreme circumstances of abnormal overvoltage conditions or varistor […]
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No zapping! How to design safe and reliable wireless charging systems
Smart use of protection components can help give consumers a trouble-free charge. Todd Phillips Littelfuse Inc. The convenience that wireless charging systems provide has made them increasingly popular for use with consumer goods and appliances. But the development of wireless charging devices creates a number of challenges for designers. Most wireless applications are characterized by […]
Reed relays capable of switching speeds up to 1 kHz and billions of operations
Littelfuse, Inc. introduced an expanded reed relay product portfolio that extends voltage capabilities to include AC ratings, supports AC or DC loads up to 300 Vdc, and provides input/output isolation voltage 2500 VRMS. These miniature reed relays are available in single In-line (SIL) and dual-in-line (DIL) packages. Typical applications for the reed relays include position […]
DC-disconnect switches handle up to 1.5 kV
Littelfuse, Inc. announced the introduction of its DC Disconnect Switch product line. The Littelfuse LS6 (available in 1000 and 500 V) and the LS6R (available in 1500 V) series are energy-efficient, compact disconnect switches that quickly break or resume the flow of current safely. Offered in both 250 and 400 amperage ratings, these switches prevent […]
TVS diode arrays deliver Vbus, portable battery and button/switch protection
Littelfuse, Inc. announced a new series of 50 A unidirectional TVS Diode Arrays (SPA Diodes). Compared to solutions currently available on the market, the SP1250-01ETG 50 A unidirectional TVS diode arrays provide superior protection via lower clamping voltage and low leakage current, all in a PCB space-saving footprint. Typical markets and applications for the SP1250-01ETG […]
Fusible resistors vs fuses
Safety standards often dictate what component provides the best protection against overcurrents. Todd Phillips, Saad Lambaz • Littelfuse, Inc. Most people would probably agree that the time it takes to recharge their cell phone, gaming console, or tablet computer is both inconvenient and annoying. Faster charging requires a more powerful charger or power supply. The […]
Protecting autonomous vehicle control circuits
The subsystems that make up an autonomous vehicle should be bullet-proof when it comes to electrical interference and transients. James Colby, Prasad Tawade Littelfuse, Inc. Those who follow autonomous vehicle technology are usually well aware of its benefits. But the safety and convenience autonomous vehicles offer can only come if the vehicle electronics is reliable […]
The try-before-you-buy route to energy efficient power design
Evaluation platforms help pick SiC components in power conversion circuits. Xuning Zhang, Levi Gant, Littelfuse, Inc. The quest for greener energy production and consumption has put a premium on high-efficiency power circuitry. In that regard, many modern power supplies and converters operate at much higher voltages that allow use of lower currents to minimize I2R […]
Tiny, dual-channel PPTC protects network and telecom equipment
Littelfuse, Inc. announced a new series of 250V Telecom PPTCs designed to help make telecom and network equipment more reliable. The TSM250-130 series protects against power cross and induced power surges as defined in ITU, Telcordia GR1089 and IEC 62368-1. Because it combines two resistance-matched PPTCs in a single surface-mount housing, it reduces the board […]
High-temperature thyristors handle up to 250 Vrms
Five new series of high-temperature Alternistor TRIAC switching thyristors are designed for use as semiconductor switches in appliances and equipment powered by line AC voltages up to 250 VRMS. Available in five compact, surface-mount and through-hole packages, these components expand the Littelfuse TRIAC product line by making high 150°C maximum junction temperature devices available in […]
