fe a t ures rep l a ce m en t fo r s ili c o n i x 2 n3971 /p n / 4391 , 43 9 2 , & 4393 low on resist ance r d s ( o n ) 3 0 fas t s wi t ch i ng t o n 15n s a b s ol u t e m a x im u m r a t i n g s 1 @ 25 c ( u n l e s s o th e r w i s e s ta ted ) ma x i m u m t e m p er a t u r e s sto ra ge t e m per at ur e ( 2 n3971) -65 t o 200 c sto ra ge t e m per at ur e ( p n/mmb t ) -55 t o 150 c jun ct i o n o per a t i ng t e m pera t u r e 2N3971 -55 t o 200 c jun c ti o n oper a t i ng t e m per a tu r e ( p n 4391,2,3) -55 to 150 c ma x im um pow e r d i s s ip a t ion con t i n u o u s p o w e r d i ss i pa t io n 2N3971 18 0 0m w con t i n u o u s p o w e r d i ss i pa t io n ( p n/ mmb t ) 350m w max i m u m c u r r e n t s gate current 50ma max i m u m v o l ta g es gate to drain or source 2N3971 -40v gate to drain or source (mmbt ) -35v st a t ic el ect r ic a l ch a r a c t e rist ics @25 c (u n l ess o t h e r w ise stated ) 2n3 9 71 pn4 3 9 2 pn4 3 9 3 sym. ch a r a c teri stic typ min m a x min m a x min m a x unit conditions 2 n3971 - 4 0 - 4 0 - 4 0 bv g s s gate to source break d o w n v o l t a ge mmbt - 3 5 - 3 5 - 3 5 i g = -1a, v d s = 0 v 2 n 3971 - 2 - 5 - 2 - 5 - 0 . 5 - 3 v d s = 20v, i d = 1 n a v g s ( o ) gate to source voltage mmbt - 4 - 1 0 - 2 - 5 - 0 . 5 - 3 v d s = 15v, i d = 1 0 n a v g s ( f ) g at e t o s ou r c e f o r w a r d v o l t a ge 0.7 1 1 1 i g = 1 ma , v d s = 0 v 0 . 2 5 0 . 4 v g s = 0v, i d = 3 m a 0 . 3 0 . 4 v g s = 0v, i d = 6 m a v d s ( o n ) dra i n to so u r c e on vo l ta g e 0 . 3 5 0 . 4 v v g s = 0v, i d = 12m a 2 n3971 25 75 2 5 7 5 5 3 0 p n 5 0 1 0 0 2 5 1 0 0 5 6 0 i d s s dra i n to s o u r c e saturation current 2 mmbt 5 0 2 5 5 m a v d s = 20v, v g s = 0 v 2N3971 - 5 - 1 0 0 - 1 0 0 - 1 0 0 i g s s g a t e lea k a ge c u r r e n t p n - 5 - 1 0 0 0 - 1 0 0 0 - 1 0 0 0 v g s = -20v, v d s = 0 v i g gate operatin g curre nt - 5 pa v d g = 15v, i d = 10 m a 2n series d s g 2 1 3 bottom view to-18 pn series to-92 bottom view 1 2 3 d s g mmbt series 1 2 3 sot-23 top view d g s 2N3971/ pn4391,2,3 /mmbt4391 series s i ng l e n-channe l j f e t sw itc h
st a t ic el ect r ic a l ch a r a c t e rist ics cont. @25 c (u n l ess o t her w ise stated ) 2n3 97 1 pn4 3 9 2 pn4 3 9 3 sym. ch a r a c teri stic typ min m a x min m a x min m a x unit conditions 5 1 0 0 v d s = 20v, v g s = - 5 v 5 1 0 0 v d s = 20v, v g s = - 7 v 2 n3941 5 25 0 v d s = 20v, v g s = -12 v 5 1 0 0 0 v d s = 20v, v g s = - 5 v 5 1 0 0 0 v d s = 20v, v g s = - 7 v p n 4392,3 5 1 0 0 0 v d s = 20v, v g s = -12 v i d ( o f f ) drain c u current mm b t 5 1 0 0 1 0 0 1 0 0 pa v d s = 10v, v g s = -10 v r d s ( o n ) dra i n t o s o u r c e o n r es is t a n c e 30 60 100 v g s = 0v, i d = 1 m a dy n a m i c e l ec t r i c a l c h a r a c t er i s t i cs @ 25 c ( u n l es s o t h e r w is e s t a t e d ) 2n 3 9 71 pn4 3 9 2 pn4 3 9 3 sym. ch a r a c teri stic typ min m a x min m a x min m a x unit conditions g f s f o r w a r d t r a n s c o n d u c t a n c e 6 m s g o s o ut pu t co n d u c t a nc e 2 5 s v d s = 20v, i d = 1 m a f = 1 k hz r d s ( o n ) dra i n t o s o u r c e o n r esi s t a n c e 30 60 100 v g s = 0v, i d = 0 a f = 1 k hz 2 n3971 1 2 1 4 1 4 1 4 p n 1 2 1 6 1 6 1 6 c is s i np u t cap a cita nc e mmbt 1 3 v d s = 20v, v g s = 0 v f = 1 m hz 2 n3971 3 . 3 3 . 5 p n 3 . 5 5 mmb t 3 . 6 v d s = 0 v , v g s = -5 v f = 1 m hz 2 n 3971 3 . 2 3 . 5 p n 3 . 4 5 mmbt 3 . 5 v d s = 0 v , v g s = -7 v f = 1 m hz 2 n3971 2 . 8 3 . 5 p n 3 . 0 5 c rs s r ever s e t r a n s fer c a p a c i t a n c e mmbt 3 . 1 p f v d s = 0 v , v g s = -1 2 v f = 1 m hz e n equ i v a l e n t i n p u t no is e v o l t a g e 3 n v / hz v d s = 10v, i d = 10m a f = 1 k hz sw it ch in g el ec t r ic a l c h a r a c t e r ist ic s @25 c (u n l es s o t h e r w is e s ta te d ) 2N3971 4 3 9 2 4 3 9 3 sym. ch a r a c teri stic typ min m a x min m a x min m a x unit conditions 2 n / p n 2 1 5 1 5 1 5 t d ( o n ) mmbt 2 2 n / p n 2 5 5 5 t r t u r n o n t i m e mmbt 2 2 n / p n 6 2 0 3 5 5 0 t d ( o f f ) mmbt 6 2 n / p n 1 3 1 5 2 0 3 0 t f t u rn o t i me mmbt 1 3 ns v d d = 10v, v g s ( h ) = 0 v
switching c i rcuit ch a r a c te ristics sym. 4 3 9 1 4 3 9 2 4 3 9 3 v g s ( l ) - 1 2 v - 7 v - 5 v r l 8 0 0 1 6 0 0 3 2 0 0 i d ( o n ) 1 2 m a 6 m a 3 m a 1 2 3 sot-23 dimensions in millimeters 0.89 1.03 1.78 2.05 1.20 1.40 2.10 2.64 0.37 0.51 2.80 3.04 0.89 1.12 0.013 0.100 0.085 0.180 0.55 1 2 3 0.170 0.195 0.500 0.610 0.016 0.022 0.095 0.105 0.045 0.055 0.175 0.195 0.130 0.155 0.045 0.060 0.014 0.020 to-92 dimensions in inches. t o - 1 8 three lead 0.230 0.209 dia. dia. 0.195 0.175 0.030 max. 0.500 min. 0.150 0.115 0.019 0.016 dia. 3 leads 2 1 3 0.046 0.036 45 0.048 0.028 0.100 0.050
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