varistor products ?2012 littelfuse, inc. revision: february 9, 2012 ultramov? varistor series radial lead varistors > ultramov tm series tmov ? /itmov ? series ultramov ? series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/tmov.html for current information. description the ultramov? metal oxide varistor series is designed f or applications requiring high peak surge current ratings and high energy absorption capability. ultramov? varistors are primarily intended for use in ac line voltage applications such as transient voltage surge suppressors (tvss), uninterruptable power supplies (ups), ac power taps, ac power meters, or other products that require voltage clamping of high transient surge currents from sources such as lightning, inductive load switching, or capacitor bank switching. these devices are produced in radial lead package sizes of 7, 10,14 and 20mm and offered in a variety of lead forms. ultramovs? are manufactured with recognized epoxy encapsulation and are rated for ambient temperatures up to 85oc with no derating. this series is laser-branded and is supplied in bulk, ammo pack (fan-fold), or tape and reel packaging. features t l eadCfree, halogen-free and rohs compliant. t ) j h i q f b l t v s h f current rating (i tm ) up to 10ka, single 8 x 20 pulse, (20mm) t 4 u b o e b s e p q f s b u j o h voltage range compatible with common ac line voltages (130 v ac to 625 v ac ) t $ i b s b d u f s j [ f e g p s maximum standby current (leakage) t $ v t u p n w p m u b h f types available t 4 u b o e b s e m f b e g p s n b o e lead space options agency approvals absolute maximum ratings t ' p s s b u j o h t p g j o e j w j e v b m n f n c f s t p g b t f s j f t
t f f % f w j d f 3 b u j o h t b o e 4 q f d j m d b u j p o t d i b s u agency agency file number e320116 116895 lr91788 42201-006 continuous ultramov? series units steady state applied voltage: % $ 7 p m u b h f 3 b o h f 7 m(ac)rms ) 130 to 625 v transients: single-pulse peak current (i tm ) 8x20 s wave (see figure 2) 1,750 to 10,000 a single-pulse energy range (w tm ) 2ms square wave 12.5 to 400 j operating ambient temperature range (t a ) -55 to +85 oc storage temperature range (t stg ) -55 to +125 oc 5 f n q f s b u v s f $ p f g m d j f o u b v ) of clamping voltage (v c
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