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| 85 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 461 series surge resistant > 461 series telelink ? fuse please refer to www.littelfuse.com/series/461.html for current information. 461 series 461 series telelink ? fuse description agency approvals electrical characteristics for series features t 4 v s g b d f n p v o u t v s h f s f t j t u b o u 4 m p # m p ? g v t f t . f f u 6 - s e & e j u j p o q p x f s d s p t t s f r v j s f n f o u t t u b o e b s e b m p o f t % f t j h o f e u p b m m p x d p n q m j b o d f x j u i 5 f m d p s e j b ( 3 $ 0 3 & b o e 5 * " " g p s n f s m z ' $ $ 1 b s u 4 v s h f 4 q f d j ? d b u j p o t t 1 s p w j e f d p p s e j o b u f e q s p u f d u j p o x j u i - j u u f m g v t f 4 * % " $ u p s ? 5 s b o t j f o u 7 p m u b h f 4 v q q s f t t p s 5 7 4 p s b ( s f f o u v c f 5 . ( b t 1 m b t n b " s s f t u p s x j u i p v u t f s j f t s f t j t u p s t t % f t j h o f e u p t f s w f u i f s f r v j s f n f o u t p g b x j e f s b o h f p g u f m f d p n n v o j d b u j p o b o e o f u x p s l j o h f r v j q n f o u t " s b u j o h i b t j n q s p w f e u f n q f s b u v s f s j t f q f s g p s n b o d f v o e f s " t v s h f d v s s f o u u f t u j o h x i f o d p n q b s f e x j u i " s b u j o h t 1 s p e v d u j t ) b m p h f o ' s f f b o e 3 p ) 4 d p n q m j b o u b o e d p n q b u j c m f x j u i m f b e g s f f t p m e f s b o e i j h i f s u f n q f s b u v s f q s p ? m f t x i f o p s e f s f e x j u i 4 u b o e b s e 4 j m w f s 1 m b u f e # s b t t $ b q t t 4 u b o e b s e q s p e v d u j t 3 p ) 4 $ p n q m j b o u b o e d p n q b u j c m f x j u i m f b e g s f f t p m e f s t b o e i j h i f s u f n q f s b u v s f q s p ? m f t agency agency file number ampere range e10480 500ma - 2a lr29862 500ma - 2a % of ampere rating opening time i p v s t . j o j n v n t f d . j o t f d t . b y 5 i f - j u u f m g v t f 4 f s j f t 5 f m f - j o l ? 4 v s g b d f . p v o u 4 v s h f 3 f t j t u b o u ' v t f p g g f s t p w f s d v s s f o u q s p u f d u j p o g p s b x j e f s b o h f p g u f m f d p n b q q m j d b u j p o t x j u i p v u s f r v j s j o h b t f s j f t s f t j t u p s 8 i f o v t f e j o d p o k v o d u j p o x j u i b - j u u f m g v t f 4 * % " $ u p s ? 5 s b o t j f o u 7 p m u b h f 4 v q q s f t t p s 5 7 4 p s b ( s f f o u v c f 5 . ( b t 1 m b t n b " s s f t u p s u i j t d p n c j o b u j p o q s p w j e f t b d p n q m j b o u t p m v u j p o g p s t u b o e b s e t b o e s f d p n n f o e b u j p o t t v d i b t ( 3 o $ p s f 5 * " " 6 - & / * & $ b o e * 5 6 , b o e , 5 i f d p p s e j o b u j p o s f r v j s f n f o u d p o u b j o f e j o ( 3 o $ p s f b o e * 5 6 , n b z s f r v j s f b t f s j f t p g j n q f e b o d f e f w j d f t applications t 5 & + b o e ) % 4 - t 4 - * $ j o u f s g b d f q p s u j p o p g ' j c f s u p u i f $ v s c ' 5 5 $ b o e ' j c f s u p u i f 1 s f n j t f t ' 5 5 1 t / p o ' j c f s 4 - * $ j o u f s g b d f g p s $ f o u s b m 0 g ? d f $ 0 m p d b u j p o t b o e 3 f n p u f 5 f s n j o b m t 3 5 t y % 4 - b q q m j d b u j p o t t v d i b t " % 4 - " % 4 - 7 % 4 - b o e 7 % 4 - t & u i f s o f u # b t f 5 t 1 0 5 4 b q q m j d b u j p o t t v d i b t n p e f n t b o t x f s j o h n b d i j o f t u f m f q i p o f t g b y n b d i j o f t b o e t f d v s j u z t z t u f n t t * 4 % / i 6 w j o u f s g b d f t # b z t u b u j p o 5 & + 5 % 4 u s v o l d b s e t telecom nano fuse temperature reading ? $ ? ' ? $ ? ' maximum temperature rise higher currents and pcb layout designs can affect this parameter. readings are measured at rated current after temperature stabilizes. revised: june 8, 2011 introduction to circuit protection introduction to circuit protection transientology 86 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 461 series surge resistant > 461 series telelink ? fuse please refer to www.littelfuse.com/series/461.html for current information. electrical specifications by item ampere rating (a) amp code max voltage rating (v) interrupting rating nominal cold resistance (ohms) nominal melting i t (a 2 sec) agency approvals " ! 7 " $ " ! 7 % $ y y y y y y * u j t d b m d v m b u f e b u n t f d t p s m f t t * u b u u j n f t s b u f e d v s s f o u i b t b u z q j d b m w b m v f p g " t f d " " t f d " " t f d " t 5 z q j d b m j o e v d u b o d f o ) v q u p . ) [ t 3 f t j t u b o d f d i b o h f t g p s f w f s z ? $ t 3 f t j t u b o d f j t n f b t v s f e b u s b u f e d v s s f o u gr 1089 inter-building requirements gr 1089 1st level lighting surge inter-building (equipment under test can not be damaged and must continue to operate properly) surge minimum peak voltage (v) minimum peak current (a) max. rise/min. decay (s) repetitions each polarity fuse choices 4 gr 1089 2nd level lightning surge telecom port (equipment under test shall not become a fire or electrical safety hazard) surge minimum peak voltage (v) minimum peak current (a) max. rise/min. decay (s) repe- titions each polarity fuse choices " m u f s o b u j w f * g t v g ? d j f o u t f s j f t s f t j t u b o d f j t v t f e u i f o u i f g v t f n b z c f v t f e j o u f t u d p o e j u j p o t 5 i f g v t f x j m m p q f o e v s j o h u i f t f u f t u d p o e j u j p o t 5 i f x j m m o p u p q f o u i v t q s p w j e j o h p q f s b u j p o b m d p n q m j b o d f average time current curves 1000 100 10 1 0.1 0.001 0.01 0.1 1 10 100 current in amperes time in seconds 1.25a 2a .500a temperature rerating curve / p u f 3 f s b u j o h e f q j d u f e j o u i j t d v s w f j t j o b e e j u j p o u p u i f t u b o e b s e s f s b u j o h p g g p s d p o u j o v p v t p q f s b u j p o 87 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 461 series surge resistant > 461 series telelink ? fuse please refer to www.littelfuse.com/series/461.html for current information. 461 series gr 1089 ac power fault 1st level inter-building (fuse not allowed to open) gr 1089 ac power fault 2nd level (fuse can open but must open in a safe and controlled manner) test vrms short circuit current (a) hits duration primary protector fuse choices n j o s f n p w f e n j o s f n p w f e t f d s f n p w f e 4 t f d p q f s b u j w f % j b h s b n % j b h s b n t f d t s f n p w f e t f d t s f n p w f e t f d t s f n p w f e t f d t s f n p w f e t f d j o q m b d f test circuit vrms short circuit current (a) duration fuse n j o t f d t t f d t 4 n j o % j b h s b n % j b h s b n n j o fuse must open before wiring simulator fuse (mdl 2.0). surge voltage (v) waveform (s) current (a) repetitions recommended fuse . f u b m m j d " y f b q p m b s j u z - p o h j u v e j o b m " y f b q p m b s j u z . f u b m m j d # y f b q p m b s j u z - p o h j u v e j o b m # y f b q p m b s j u z tia C968-a (formerly fcc part 68) surge waveforms (fuse can not open during type b events) ul 60950 requirements ul60950 (en 60950) (formerly ul 1950) power cross (l = longitudinal, m = metallic) test number voltage (v) current (a) time fuse choices - t f d t - t f d t - n j o - n j o - n j o . t f d t . t f d t . n j o . n j o 4 election of test number depends on current limiting f fire enclosure/spacing of end product t " 8 ( m j o f d p s e s f n p w f t - . u f t u s f r v j s f n f o u t - d p o e v d u f e p o m z j g q s p e v d u e p f t o p u q b t t t f d u j p o t - . - . - . d p o e v d u f e j g o p u j o b ? s f f o d m p t v s f fuse must open before the wiring simulator fuse (mdl 2.0). ul60950 (en 60950) (formerly ul 1950) impulse test and steady-state electric strength test test voltage (v) current (a) waveform repetitions fuse choices impulse ' p s i b o e i f m e v o j u t y n t x t f d t s f t u / p o i b o e i f m e y n t x t f d t s f t u steady-state ' p s i b o e i f m e v o j u t ) [ / p o i b o e i f m e ) [ ' p s u i f u z q f " f w f o u t u i f g v t f x j m m p q f o q s p w j e j o h o p o p q f s b u j p o b m d p n q m j b o d f 5 i f x j m m o p u p q f o q s p w j e j o h g p s p q f s b u j p o b m d p n q m j b o d f x j u i 5 * " " u z q f " t v s h f f w f o u t l f 1.2 5 a t 3.12 (.123") 3.12 (.123") 10.10 (.397") 3.2 5 (.128") 3.43 (.13 5 ") 12.6 (.496") 6.10 (.240") recommended pad layout 1.70 typ (.067") dimensions introduction to circuit protection introduction to circuit protection transientology 88 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 461 series surge resistant > 461 series telelink ? fuse please refer to www.littelfuse.com/series/461.html for current information. materials body: $ f s b n j d terminations: 4 j m w f s q m b u f e $ b q t product marking # s b o e - p h p " n q f s f 3 b u j o h 5 operating temperature ? $ u p ? $ moisture sensitivity level - f w f m + 4 5 % $ solderability * & $ ? $ j n n f s t j p o t f d p o e t resistance to dissolution of metallization * 1 $ & * " + 4 5 % " 5 f t u % ? $ g p s t f d p o e t product characteristics reflow condition 1 c o g s f f b t t f n c m z pre heat - temperature min (t s(min) ) ? $ - temperature max (t s(max) ) ? $ - time (min to max) (t s ) o t f d p o e t average ramp-up rate (liquidus temp (t l ) to peak) ? $ t f d p o e n b y t s(max) to t l - ramp-up rate ? $ t f d p o e n b y reflow - temperature (t l ) (liquidus) ? $ - temperature (t l ) o t f d p o e t peak temperature (t p ) ? $ time within 5c of actual peak temperature (t p ) o t f d p o e t ramp-down rate ? $ t f d p o e n b y time 25c to peak temperature (t p ) n j o v u f t n b y do not exceed ? $ soldering parameters packaging part numbering system packaging option packaging specification quantity quantity & packaging code n n 5 b q f b o e 3 f f m & * " 3 4 * & $ q b s u er thermal shock . * - 4 5 % . f u i p e 5 f t u $ p o e j u j p o # ? $ u p ? $ n j o v u f t ! f b d i f y u s f n f mechanical shock . * - 4 5 % . f u i p e 5 f t u $ p o e j u j p o " ) b m g 4 j o f ( h t n t f d t e v s b u j p o high frequency vibration . * - 4 5 % . f u i p e 5 f t u $ p o e j u j p o % moisture resistance . * - 4 5 % . f u i p e d z d m f t terminal strength # p b s e e f y f d u j p o q f s & * " * 4 n n e f y f d u j p o g p s n j o v u f terminal attachment . * - 4 5 % . f u i p e 5 f t u $ p o e j u j p o " m c t b q q m j f e u p f o e d b q t 0461 1.25 e r series amp code * quantity code packaging code 3 f g f s u p & m f d u s j d b m $ i b s b d u f s j t u j d t u b c m f & q d t 3 5 b q f b o e 3 f f m *example: b n q q s p e v d u j t 002. er b n q q s p e v d u t i p x o b c p w f time temperature t p t l t s(max) t s(min) 25 t p t l t s time to peak temperature (t 25oc to peak) ramp-down ramp-up preheat critical zone t l to t p |
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