123 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 446p/447p series ebf fuse fast-acting > 446/447 series please refer to www.littelfuse.com/series/446.html or /447.html for current information. 446/447 series 446/447 series fuse description agency approvals features t 3 p ) 4 d p n q m j b o u b o e m f b e g s f f t * e f b m g p s v t f j o f m f d u s p o j d m j h i u j o h c b m m b t u
q p x f s t v q q m z b o e q p x f s j o w f s u f s b q q m j d b u j p o t t 3 b u f e g p s v t f j o
b o e 7 " $ d j s d v j u t t # b t f e p o u i f q s p w f o s f m j b c j m j u z p g u i f b v u p n p u j w f . * / * ? ' v t f b w b j m b c m f g s p n u i s p v h i b n q f s f t agency agency file number ampere range e71611 2a - 10a lr29862 2a - 10a electrical characteristics for series % of ampere rating opening time 100% i p v s t
. j o j n v n t f d . j o t f d . b y 5 i f t f s j f t b s f d j s d v j u c p b s e n p v o u b c m f
y b u q s p ? m f
g b t u b d u j o h g v t f t e f t j h o f e g p s q s p u f d u j p o p g f m f d u s p o j d c b m m b t u t b o e q p x f s j o w f s u f s b q q m j d b u j p o t 5 i f t f s j f t j t e f t j h o f e x j u i m f b e t g p s t v s g b d f n p v o u b q q m j d b u j p o t
b o e u i f t f s j f t j t e f t j h o f e x j u i m f b e t g p s u i s p v h i i p m f b q q m j d b u j p o t 5 i j t t f s j f t p g e f w j d f t b s f m f b e g s f f b o e n f f u t u i f s f r v j s f n f o u t p g u i f 3 p ) 4 e j s f d u j w f 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 b n q f s f t ! 7 " $
b n q f s f t ! 7 % $ b o e b n q f s f t ! 7 % $ y y y y y y y y y y y y 446 series t v s g b d f n p v o u m f b e t
447 series u i s v i p m f m f b e t
revised: february 24, 2010
introduction to circuit protection introduction to circuit protection transientology 124 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 446p/447p series ebf fuse fast-acting > 446/447 series please refer to www.littelfuse.com/series/446.html or /447.html for current information. average time current curves 1000 100 10 1 0.1 0.01 1000 100 10 1 0.1 2a 3a 4a 5a 7 1/2a 10a time in seconds current in amperes soldering parameters temperature rerating curve / p u f % 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 e 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 446 series: 3 f y p x 4 p m e f s ? ? $
t f d p o e t n b y j n v n / p d m f b o q s p d f t t s f d p n n f o e f e 8 b w f 4 p m e f s ? / p u s f d p n n f o e f e / p o q m b u f e u f s n j o b m t v s g b d f t n b z o p u n f f u . * - 4 5 %
. f u i p e 447 series: $ p o u b d u - j u u f m g v t f g p s t p m e f s j o h q b s b n f u f s t * o t j e f u f s n j o b m g b d f p g f b d i m f b e j t o p o q m b u f e [ j o d / p o q m b u f e [ j o d u f s n j o b m g b d f t n b z o p u n f f u . * - 4 5 %
n f u i p e 5 p f o t v s f u i b u u i f g v t f j t b d d f q u b c m f g p s u i f b q q m j d b u j p o
b q q s p q s j b u f b q q m j d b u j p o u f t u j o h t i p v m e c f q f s g p s n f e
125 ? 2009 littelfuse, inc. specifications are subject to change without notice. surface mount fuses 446p/447p series ebf fuse fast-acting > 446/447 series please refer to www.littelfuse.com/series/446.html or /447.html for current information. 446/447 series materials # p e z 1 m b t u j d # p e z o 5 f s n j o b u j p o t 5 j o m p b e
q m b u f e ; o
/ j c b s s j f s cleaning / p d m f b o j o h q s p d f t t s f d p n n f o e f e product characteristics operating temperature o o $ u p o $ dimensions packaging part numbering system pa t a 6 0 4 6 02 lf 350v 10.92 (.430") 8.76 (.345") (.032") 0.81 (.295") 7.49 1.50 (.059") max 3.2 (.126") 0.81 (.032") 3.2 (.126") 5.59 (.220") 3.81 (.150") 1.52 (.060") 1.44 (.057") 5.91 (.233") 8.81 (.347") 4.03 (.159") 1.27 (.050") dia 10.11 (.398") reference dimensions (inches) recommended pad layout 447 mounting holes ' p s e j n f o t j p o t
q m f b t f d p o u b d u - j u u f m g v t f g p s t q f d j ? d b u j p o t packaging option packaging specification quantity quantity & packaging code 446 series n n 5 b q f b o e 3 f f m & * " 3 4 * & $
q b s u
; 3 1 447 series # v m l 1 b d l o 4000 : 9 1 0446 002. zrp series amp code quantity code zrp = 800 0447 002. yxp series amp code quantity code yxp = 4000
introduction to circuit protection introduction to circuit protection transientology 126 ? 2009 littelfuse, inc. specifications are subject to change without notice.
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