lv ultramov ? low voltage high surge varistors superior peak surge current ratings in small disc sizes applications ? telecom power systems ? surge protection devices ? automation controls ? audio devices ? security systems ? wireless base stations greater su rge p r o te c t ion littelfuse lv ultramov ? series varistor offers 4x greater surge withstanding capability than existing technologies on the market today the littelfuse lv ultramov series varistor is designed with a new, proprietary formulation that can provide higher surge ratings with a smaller volume of material used per energy unit. it features a wide vac voltage range of 11v to 40v, and vdc voltage range of 14v to 56v. datasheet samples resources
lv ultramov reduces counts for design engineers lv ultramov can help circuit designers reduce counts based on the total surge level, thereby reducing the footprint and volume required for surge protection. 1 part lv u ltram o v 2 parts supplier 2 4 parts supplier 1 littelfuse.com ? 2013 littelfuse ? lv ultramov series lv ultramov ? series varistor lv ultramov supplier 1 8ka 20mm 4ka 14mm 2ka 10mm 1ka 7mm 500a 5mm 20mm = 14mm = 10mm = how does lv ultramov reduce varistor disc size? the lv ultramov delivers the same peak surge rating in a disc thats half the size of other technologies on the market. lv ultramov provides 4x greater surge protection for low dc voltage applications in the smallest package features ? breakthrough in low voltage varistor design provides 4x greater surge protection ? reduced footprint and volume required for surge protection ? high energy absorption capability ? high resistance to temperature cycling ? optional phenolic coating ? lead-free, halogen-free, and rohs compliant benefts ? increased long-term reliability due to the ability to handle higher surges over the end products lifetime ? more board space is available for higher value functional components ? lower weight and cost for end product from use of a smaller disc ? higher surge handling density in critical surge protection device module solutions ? higher operating temperature rangeup to 125oc ? environmentally friendly product phenolic coated epoxy coated higher surge rating for the same size disc lv ultramov improves the reliability of the varistor by enhancing the surge with- standing capability of the varistor device. for example, a 5mm lv ultramov varistor can withstand 100 times as many 100a 8x20s surges as other 5mm varistors currently available. 10000 10000 10000 10000 10000 10 100 1000 10000 1x 2x 100x impulse duration (s) surge current (a) 1x 2x 100x repetitive surge capacity of a 5mm lv ultramov is 100 times greater than that of the regular 5mm mov by other suppliers diameter (mm) vrms (v) voc (v) littelfuse lv ultramov series supplier 1 supplier 2 p/n (max. op. temp. 85?c) p/n (max. op. temp. 1 25?c) imax (8/20) (a) wmax (2ms0) (j) imax (8/20) (a) wmax (2ms0) (j) imax (8/20) (a) wmax (2ms0) (j) 5 11 14 v05e11p v05p11p 500 2 100 0.3 250 0.4 7 11 14 v07e11p v07p11p 1000 4 250 0.8 500 0.9 10 11 14 v10e11p V10P11P 2000 8 500 1.7 1000 2.2 14 11 14 v14e11p v14p11p 4000 22 1000 3.2 2000 4.3 20 11 14 v20e11p v20p11p 8000 35 2000 10 3000 12 higher surge rating for the same size disc with littelfuse lv ultramov 4x greater su rge p r o te c t ion i n the smallest package available
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