s m d z e n e r d i o d e zener v oltage: 3.3 to 330 v olts dc power: 1 w atts rohs device page 1 rev : a features -glass passivated chip. -low leakage. -for use in stabilizing and clipping with high power rating . -built-in strain relief. -low inductance. -high peak reverse power dissipation. mechanical data -case: jedec do-214ac, molded plastic. -polarity: color band denotes cathode end. -approx. weight: 0.069 grams czra4728b-hf thru. czra1330b-hf maximum ratings and electrical characteristics ratings at 25c ambient temperature unless otherwise specified. single phase, half wave, 60hz, resistive or inductive load. for capacitive load, derate current by 20%. d i m e n s i o n s i n i n c h e s a n d ( m i l l i m e t e r ) d o -2 14 a c (s m a ) qw -jz009 no tes : 2. v alid pr ovi ded th at lea ds are ke pt at am bie nt tem per atu re at a d ista nce of 10 mm fro m cas e. comchip t echnology co., l td. 0.109(2.76) 0.099(2.51) 0.064(1.63) 0.049(1.23) 0.206(5.22) 0.192(4.87) 0.012(0.30) 0.006(0.15) 0.008(0.20) 0.000(0.00) 0.059(1.51) 0.030(0.75) 0.089(2.26) 0.077(1.96) 0.179(4.55) 0.161(4.10) dc power dissipation at t l =50c (note 1) max. forward voltage at i f =200 ma maximum thermal resistance junction to ambient air (note 2) junction temperature range storage temperature range v alue units symbol characteristics v f p d t j t stg 1 1.2 170 -55 to +175 w v k/w c c -lead: solderable per mil-std-750, method 2026. -epoxy: ul 94v -0 rate flame retardant. -mounting position: any . -55 to +175 1. t l = lead temperature at 3/8 (9.5mm) from body . r ja halogen free company reserves the right to improve product design , functions and reliability without notice.
ra ting and characteristic cur ves ( ) czra4728b-hf thru. czra1330b-hf fig.4 - maximum surge power lead t emperature, (c) t l 0 fig.1 - power derating curve t emperature 0 m a x . p o w e r d i s s i p a t i o n , p d ( w ) 0.2 0.6 1.4 25 75 100 175 0.4 1.2 50 125 150 1.0 0.8 , v z ( m v / c ) t e m p e r a t u r e c o e f f i c i e n t zener v oltage (v) , vz 100 10 1 100 10 range lead length to heatsink, l (inches ) 0 0 25 50 75 150 0.3 0.2 0.4 0.7 0.6 0.1 0.5 175 100 125 j u n c t i o n t o l e a d t h e r m a l r e s i s t a n c e , j l ( c / w ) 0.8 0.9 1 fig.3 - t ypical thermal resistance v .s. lead length pulse width, pw (s ) 1 1 10 100 1000 0.1 0.01 10 100 p e a k s u r g e p o w e r , p p k ( w ) fig.2 - t emperature coef ficients v .s. zener v oltage 5% duty cycle 10% duty cycle 20% duty cycle 1 1v -91v non-repetitive rectangular w aveform tj=25c prior to initial pulse s m d z e n e r d i o d e page 2 rev : a qw -jz009 comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice.
electrical characteri stics (czra4728b-hf thru. czra1330b-hf) v z @i zt (v) i zt (ma) czra4735b-hf 1.00 41.0 10.0 700 2.0 146.0 6.2 czra4736 b-hf 1.00 37.0 5.0 700 3.5 133.0 6.8 czra4737 b-hf 0.50 34.0 5 .0 700 4.0 121.0 7.5 czra4738 b-hf 0.50 31.0 700 4.5 1 10.0 8.2 czra4739 b-hf 0.50 28.0 700 5.0 100.0 9.1 0.25 25.0 700 7.0 91.0 10.0 0.25 23.0 700 8.0 83.0 1 1.0 0.25 21.0 700 9.0 76.0 12.0 19.0 0.1 700 10.0 69.0 13 .0 17.0 0.1 700 14.0 61.0 15 .0 15.5 0.1 700 16.0 57.0 16 .0 14.0 0.1 750 20 .0 50.0 18 .0 12.5 750 22 .0 45.0 20 .0 1 1.5 750 23 .0 41.0 22 .0 10.5 750 25 .0 38.0 24 .0 9.5 750 35 .0 34.0 27.0 8.5 1000 40 .0 30.0 30 .0 7.5 1000 45 .0 27.0 33 .0 7.0 1000 50 .0 25.0 36 .0 6.5 1000 60 .0 23.0 39 .0 6.0 1500 70 .0 22.0 43 .0 5.5 1500 80 .0 19.0 47 .0 5.0 1500 95 .0 18.0 51 .0 4.5 2000 1 10 .0 16.0 56 .0 4.0 2000 125 .0 14.0 62.0 3.7 2000 150 .0 13.0 68.0 3.3 2000 175 .0 12.0 75.0 3.0 3000 200 .0 1 1.0 82.0 2.8 3000 250 .0 10.0 91.0 2.5 3000 350 .0 9.0 100.0 2.3 4000 450 .0 8.6 1 10.0 2.0 4500 550 .0 7.8 120.0 1.9 5000 700 .0 7.0 130.0 1.7 6000 1000.0 6.4 150.0 1.2 9990 1900.0 4.7 200.0 1.0 8000 1600.0 4.0 220.0 0.9 8500 1800.0 3.8 240.0 0.9 9000 2000.0 3.6 250.0 0.8 9000 2100 .0 3.3 270.0 0.8 9500 2300 .0 3.0 300.0 part no maximum impedance zener i r ( a) 1.6 6500 1 100.0 5.8 160.0 1.4 7000 1200.0 5.2 180.0 35a 36a 37a 38a 39a 40a 41a 42a 43a 44a 45a 46a 47a 48a 49a 50a 51a 52a 53a 54a 55a 56a 57a 58a 59a 60a 61a 62a 63a 64a 1 1z 12z 13z 15z 16z 18z 20z 22z 24z 25z 27z 30z czra4740 b-hf czra4741 b-hf czra4742 b-hf czra4743 b-hf cz ra 47 44 b- h f czra4745 b-hf czra4746 b-hf czra4747 b-hf czra4748 b-hf czra4749 b-hf czra4750 b-hf czra4751 b-hf czra4752 b-hf czr a47 53 b-h f czra4754 b-hf czra4755 b-hf czra4756 b-hf czra4757 b-hf czra4758 b-hf czra4759 b-hf czra4760 b-hf czra4761 b-hf czra4762 b-hf czra4763 b-hf czra4764 b-hf czra1 1 10 b-hf czra1 120 b-hf czra1 130 b-hf czra1 150 b-hf czra1 160 b-hf czra1 180 b-hf czra1200 b-hf czra1220 b-hf czra1240 b-hf czra1250 b-hf czra1270 b-hf czra1300 b-hf 0.5 0.5 0.1 0.1 5 .0 notes: 1. the type standard tolerance on the 5%. number listed have a nominal zener voltage of 2. everse . the r surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on i zt per jedec marking code z zt @i zt ( ) z zk @i zk ( ) i zk (ma) v r (v) i zm (ma) i rm (mapk) nominal zener v oltage maximum reverse leakage current maximum dc zener current maximum surge current 3 .0 4 .0 5 .0 6 .0 7 .0 7.6 8.4 9.1 9.9 1 1.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0 83.6 91.2 98.8 1 14.0 152.0 167.2 182.4 190.0 205.0 228.0 121.6 136.8 730 660 605 550 500 454 414 380 344 305 285 250 225 205 190 170 150 135 125 1 15 1 10 95 90 80 70 65 60 55 50 45 40 37 34 30 22 20 19 18 16 15 28 25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 czra4728b-hf 1.00 76.0 100.0 400 10.0 274.0 3.3 czra4729 b-hf 1.00 69.0 100.0 400 10.0 251.0 3.6 czra4730 b-hf 1.00 64.0 50 .0 400 9.0 232.0 3.9 czra4731 b-hf 1.00 58.0 400 9.0 210.0 4.3 czra4732 b-hf 1.00 53.0 500 8.0 192.0 4.7 1.00 49.0 550 7.0 177.0 5.1 1.00 45.0 600 5.0 161.0 5.6 28a 29a 30a 31a 32a 33a 34a czra4733 b-hf czra4734 b-hf 10 .0 10 .0 10.0 10 .0 1 .0 1 .0 1 .0 1 .0 1 .0 1.0 2.0 1370 1255 1 160 1050 960 885 805 0.7 9500 2500 .0 2.7 330.0 33z czra1330 b-hf 250.2 13 0.25 0.1 s m d z e n e r d i o d e page 3 rev : a qw -jz009 comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice.
reel t aping specification t railer device leader 400mm (min) 160mm (min) ....... ....... ....... ....... ....... ....... ....... ....... end start direction of feed b c d d d 2 d 1 s m a / d o - 2 1 4 a c s y m b o l ( m m ) ( i n c h ) 1 . 9 6 9 m i n . 2 . 7 9 0 . 1 0 5 . 3 3 0 . 1 0 4 . 0 0 0 . 1 0 1 . 7 5 0 . 1 0 5 0 . 0 m i n . 1 3 . 0 0 . 2 4 . 0 0 0 . 1 0 2 . 0 0 0 . 0 5 1 2 . 0 0 . 3 0 1 8 . 4 m a x . 3 3 0 m a x 0 . 2 1 0 0 . 0 0 4 0 . 1 1 0 0 . 0 0 4 0 . 0 6 9 0 . 0 0 4 1 3 . 0 0 m a x 0 . 5 1 2 0 . 0 0 8 s y m b o l ( m m ) ( i n c h ) 0 . 4 7 2 0 . 0 1 2 0 . 1 5 7 0 . 0 0 4 0 . 1 5 7 0 . 0 0 4 0 . 0 7 9 0 . 0 0 2 0 . 7 2 4 m a x e f p p 0 p 1 w w 1 1 . 7 5 0 . 1 0 0 . 0 6 9 0 . 0 0 4 5 . 5 0 0 . 0 5 0 . 2 1 6 0 . 0 0 2 s m a / d o - 2 1 4 a c o 1 2 0 d 1 d 2 d w 1 c i n d e x h o l e d e f b w p p 0 p 1 a 2 . 3 6 0 . 1 0 0 . 0 9 3 0 . 0 0 4 a s m d z e n e r d i o d e page 4 rev : a qw -jz009 comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice.
standard packaging marking code c a s e t y p e d o - 2 1 4 a c 5 , 0 0 0 r e e l ( p c s ) reel size (inch) 1 3 r e e l p a c k ( s m a ) suggested p ad layout c d b a size (inch) 0.208 (mm) 5.28 1.88 max 1.52 min 0.074 max 0.060 min 1.68 min 0.066 min b c d a do-214ac(sma) s m d z e n e r d i o d e page 5 rev : a qw -jz009 comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. xxx 1. xxx : marking code (see page.3) cathod band 2. :
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