It is observed that in 2014, whether it is household LED lighting, road LED lighting or commercial LED lighting, there is a full-scale outbreak. Since each higher quality LED lighting fixture must basically be equipped with overcurrent, overvoltage protection components (such as fuses and MOVs) and EMI filter components, the need for peripheral protection components such as overcurrent and overvoltage and EMI filtering is also rising. .
Bharat Shenoy, director of technology marketing for Littelfuse's Electronic Business Development Division, said that demand for MOVs and fuses with high surge tolerance will be bullish for the LED lighting market in 2014. Fuses with high surge tolerance will also be used in the growing wireless base station infrastructure market. In addition, low-impedance, high-current PTCs will be used in mobile computing lithium-ion battery protection applications, and this market will grow with smartphones and tablets.
He pointed out that the TMOV25 thermal protection varistor and 477 series fuse developed for the outdoor LED lighting market are Littelfuse's most competitive products. The 688 series and 328 series high surge withstand fuses are mainly used in wireless base station infrastructure applications. The Lo-Rho series of PTCs are primarily targeted at lithium-ion battery applications.
Currently, the longest lead time for TMOV25 is 8-10 weeks, BharatShenoy said: We will try to shorten the delivery cycle by 2 weeks, which is 6-8 weeks.
The fuse will replace the PTC as the main overcurrent protection component. The AC input of each outdoor LED lighting fixture must be equipped with an overcurrent protection component to prevent the inrush current induced by the power line during lightning strikes from damaging the rectifier diode and The electronic components behind. Although the front of the overcurrent protection component must be equipped with one or several lightning protection components (such as MOV, GDT, TVS or semiconductor discharge tubes), these lightning protection components will discharge most of the lightning surge current, but there will still be some It will flow through the overcurrent protection component to the back electronic components. Therefore, the overcurrent protection component must be able to withstand high surge currents. This surge withstand capability is very important because the overcurrent protection component cannot be blown when the lightning surge current comes.
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