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1 1 s s m m a a f f 4 4 7 7 2 2 8 8 a a t t h h r r u u 1 1 s s m m a a f f 4 4 7 7 7 7 7 7 a a silicon planar zener diodes " total power dissipation: max . 1 w. " wide zener reverse voltage range 3.3v to 330v. " small plastic package suitable for surface mounted design. mechanical data case: smaf terminals: solderable per mil-std-750, method 2026 pprox. weight: 27m g 0. 00086oz " " " a features p p i i n n n n i i n n g g pin 1 2 description cathode anode simplified outline s maf and symbol 1 2 a a b b s s o o l l u u t t e e m m a a x x i i m m u u m m r r a a t t i i n n g g s s a a n n d d c c h h a a r r a a c c t t e e r r i i s s t t i i c c s s t t a a = = 2 2 5 5 ? ? c c ? ? p p a a r r a a m m e e t t e e r r power dissipation at t =75 l c s s y y m m b b o o l l v v a a l l u u e e u u n n i i t t p d 1 w forward voltage at i f = 200 ma v f 1.2 v f f i i g g . . 1 1 m m a a x x i i m m u u m m c c o o n n t t i i n n u u o o u u s s p p o o w w e e r r d d e e r r a a t t i i n n g g 0.2 0.4 0.6 0.8 1.0 1.2 0.0 25 50 75 100 125 150 175 power dissipation ( w ) t c) l ,lead temperature ( p.c.b. mounted on 0.2 x 0.2" (5 x 5 mm) copper areas pads. junction temperature range storage temperature range t j t s - 55 to + 150 - 55 to + 150 c c
c h a r a c t e r i s t i c s a t t a = 2 5 c ? 1 ? v zt is tested with pulses (20 ms) type marking zener voltage range ? 1 ? v zt ? at i ? zt i zt dynamic impedance reverse current z zt ? at i ? zt i r at v r max ( ? ) max ?? a ? ? v ? nom ? v ? min ? v ? max ? v ? (ma) admissible zener current i zm (ma) 5.1 5.6 6.2 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 6.8 39 4.84 5.32 5.86 7.12 7.79 8.60 9.50 10.4 11.4 12.4 13.8 15.2 16.8 19.0 20.8 22.8 25.3 28.2 31.3 34.2 6.46 37.2 5.36 5.92 6.51 7.88 8.67 9.59 10.5 11.6 12.6 14.1 15.8 17.1 19.2 21.2 23.3 26.0 28.9 32.0 34.9 37.9 7.18 41.5 49 45 41 34 31 28 25 23 21 19 17 16 14 13 12 11 9.5 8.5 7.5 7.0 37 6.5 7.0 5.0 2.0 4.0 4.5 5.0 7.0 8.0 9.0 10 14 16 20 22 23 25 35 40 45 50 3.5 60 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 5 5 10 5 1 2 3 5 6 7 7 8 9 10 11 12 13 15 17 18 21 23 25 27 4 30 5 3.6 3.9 4.3 4.7 3.40 3.70 4.06 4.50 3.80 4.10 4.56 4.93 69 64 58 53 10 9.0 9.0 8.0 100 50 25 10 1 1 1 1 3.3 3.10 3.50 75 10 100 1 300 330 64.6 71.2 77.9 95.0 104 114 125 140 155 170 189 209 229 249 269 289 313 86.0 71.7 78.8 87.0 105 116 127 142 157 172 191 211 231 251 271 291 315 346 96.0 3.7 3.3 3.0 2.5 2.3 2.0 1.9 1.7 1.6 1.4 1.2 1.0 1.0 1.0 1.0 1.0 1.0 2.8 150 175 200 350 450 550 700 900 1100 1200 1400 1600 1800 2000 2100 2300 2500 250 52 56 62 76 84 91 100 110 120 135 150 165 180 190 205 230 250 69 47 44.9 48.6 53.6 58.9 49.8 54.0 58.8 65.6 5.5 5.0 4.5 4.0 80 95 110 125 35 38 42 47 43 40.9 45.6 6.0 70 1 32 68 75 82 100 110 120 135 150 165 180 200 220 240 260 280 91 51 56 62 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 186 170 154 127 116 104 95 86 79 71 63 58 52 47 43 38 35 31 28 26 140 24 263 243 219 203 285 3.1 2.8 20 22 14 12 11 9.5 8.6 7.8 7.0 6.3 5.8 5.2 4.7 4.3 3.9 3.7 3.4 10 18 17 15 1smaf4728a 1smaf4729a 1smaf4730a 1smaf4731a 1smaf4732a 1smaf4733a 1smaf4734a 1smaf4735a 1smaf4736a 1smaf4737a 1smaf4738a 1smaf4739a 1smaf4740a 1smaf4741a 1smaf4742a 1smaf4743a 1smaf4744a 1smaf4745a 1smaf4746a 1smaf4747a 1smaf4748a 1smaf4749a 1smaf4750a 1smaf4751a 1smaf4752a 1smaf4753a 1smaf4754a 1smaf4755a 1smaf4756a 1smaf4757a 1smaf4758a 1smaf4759a 1smaf4760a 1smaf4761a 1smaf4762a 1smaf4763a 1smaf4764a 1smaf4765a 1smaf4766a 1smaf4767a 1smaf4768a 1smaf4769a 1smaf4770a 1smaf4771a 1smaf4772a 1smaf4773a 1smaf4774a 1smaf4775a 1smaf4776a 1smaf4777a 728a 729a 730a 731a 732a 733a 734a 735a 736a 737a 738a 739a 740a 741a 742a 743a 744a 745a 746a 747a 748a 749a 750a 751a 752a 753a 754a 755a 756a 757a 758a 759a 760a 761a 762a 763a 764a 765a 766a 767a 768a 769a 770a 771a 772a 773a 774a 775a 776a 777a
p p a a c c k k a a g g e e o o u u t t l l i i n n e e p p l l a a s s t t i i c c s s u u r r f f a a c c e e m m o o u u n n t t e e d d p p a a c c k k a a g g e e ; ; 2 2 l l e e a a d d s s s s m m a a f f a c c " all round v a m e unit mm 1.3 0.23 3.7 2.7 4.9 1.1 0.18 3.3 2.4 4.4 7 max min mil max min 51 43 9.1 7.1 146 130 106 94 193 173 acde h e " 1.6 1.3 63 51 e bottom view h e g to p view 1.3 1.0 51 39 g g " all round e d a e pad pad t t h h e e r r e e c c o o m m m m e e n n d d e e d d m m o o u u n n t t i i n n g g p p a a d d s s i i z z e e unit ? mm(mil) 2.8(110) 1.6(63) 1.8(71) 1.6(63) 1 1 s s m m a a f f 4 4 7 7 2 2 8 8 a a t t h h r r u u 1 1 s s m m a a f f 4 4 7 7 7 7 7 7 a a

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