surface mount zener diodes revision november 21, 2013 1 / 5 @ socay electronics co., ltd. 2013 specifications are subject to change without notice. please refer to www.socay.com for current information. sma4728a - sz1330a series v z : 3.3 to 330 v p d : 1 w socay electronics co., ltd. www.socay.com u glass passivated chip u low leakage u built-in strain relief u low inductance u high peak reverse power dissipation u lead-free component u for use in stabilizing and clipping with high power rating u case: molded plastic u epoxy: ul 94v-0 rate flame retardant u lead: solderable per mil-std-750, method 2026 u polarity: color band denotes cathode end u mounting position: any parameter symbol value unit dc power dissipation at t l = 50 c (1) p d 1 w maximum forward voltage at i f = 200 ma v f 1.2 v maximum thermal resistance junction to ambient air (2) r ja 170 k/w junction temperature range t j -55 to +175 c storage temperature range t stg -55 to +175 c notes: (1) tl=lead temperature 3/8 (9.5mm) from body (2) valid provided that leads are kept at ambient temperature a distance of 10mm from case maximum r atings (t a =25 unless otherwise noted) features mechanical data schematic symbol cathode anode
surface mount zener diodes revision november 21, 2013 2 / 5 @ socay electronics co., ltd. 2013 specifications are subject to change without notice. please refer to www.socay.com for current information. sma4728a - sz1330a series v z : 3.3 to 330 v p d : 1 w socay electronics co., ltd. www.socay.com nominal zener voltage maximum zener impedance maximum reverse leakage current maximum dc zener current maximum surge current v z @i zt i zt z zt @i zt z zk @i zk i zk i r @v r izm irm part number marking (v) (ma) ( ) ( ) (ma) ( a) (v) (ma) (mapk) sma4728a 28a 3.3 76.0 10.0 400 1.00 100.0 1.0 274.0 1370 sma4729a 29a 3.6 69.0 10.0 400 1.00 100.0 1.0 251.0 1255 SMA4730A 30a 3.9 64.0 9.0 400 1.00 50.0 1.0 232.0 1160 sma4731a 31a 4.3 58.0 9.0 400 1.00 10.0 1.0 210.0 1050 sma4732a 32a 4.7 53.0 8.0 500 1.00 10.0 1.0 192.0 960 sma4733a 33a 5.1 49.0 7.0 550 1.00 10.0 1.0 177.0 885 sma4734a 34a 5.6 45.0 5.0 600 1.00 10.0 2.0 161.0 805 sma4735a 35a 6.2 41.0 2.0 700 1.00 10.0 3.0 146.0 730 sma4736a 36a 6.8 37.0 3.5 700 1.00 5.0 4.0 133.0 660 sma4737a 37a 7.5 34.0 4.0 700 0.50 5.0 5.0 121.0 605 sma4738a 38a 8.2 31.0 4.5 700 0.50 5.0 6.0 110.0 550 sma4739a 39a 9.1 28.0 5.0 700 0.50 0.5 7.0 100.0 500 sma4740a 40a 10.0 25.0 7.0 700 0.25 0.5 7.6 91.0 454 sma4741a 41a 11.0 23.0 8.0 700 0.25 0.1 8.4 83.0 414 sma4742a 42a 12.0 21.0 9.0 700 0.25 0.1 9.1 76.0 380 sma4743a 43a 13.0 19.0 10.0 700 0.25 0.1 9.9 69.0 344 sma4744a 44a 15.0 17.0 14.0 700 0.25 0.1 11.4 61.0 305 sma4745a 45a 16.0 15.5 16.0 700 0.25 0.1 12.2 57.0 285 sma4746a 46a 18.0 14.0 20.0 750 0.25 0.1 13.7 50.0 250 sma4747a 47a 20.0 12.5 22.0 750 0.25 0.1 15.2 45.0 225 sma4748a 48a 22.0 11.5 23.0 750 0.25 0.1 16.7 41.0 205 sma4749a 49a 24.0 10.5 25.0 750 0.25 0.1 18.2 38.0 190 sma4750a 50a 27.0 9.5 35.0 750 0.25 0.1 20.6 34.0 170 sma4751a 51a 30.0 8.5 40.0 1000 0.25 0.1 22.8 30.0 150 sma4752a 52a 33.0 7.5 45.0 1000 0.25 0.1 25.1 27.0 135 sma4753a 53a 36.0 7.0 50.0 1000 0.25 0.1 27.4 25.0 125 sma4754a 54a 39.0 6.5 60.0 1000 0.25 0.1 29.7 23.0 115 sma4755a 55a 43.0 6.0 70.0 1500 0.25 0.1 32.7 22.0 110 sma4756a 56a 47.0 5.5 80.0 1500 0.25 0.1 35.8 19.0 95 sma4757a 57a 51.0 5.0 95.0 1500 0.25 0.1 38.8 18.0 90 sma4758a 58a 56.0 4.5 110.0 2000 0.25 0.1 42.6 16.0 80 sma4759a 59a 62.0 4.0 125.0 2000 0.25 0.1 47.1 14.0 70 sma4760a 60a 68.0 3.7 150.0 2000 0.25 0.1 51.7 13.0 65 sma4761a 61a 75.0 3.3 175.0 2000 0.25 0.1 56.0 12.0 60 sma4762a 62a 82.0 3.0 200.0 3000 0.25 0.1 62.2 11.0 55 sma4763a 63a 91.0 2.8 250.0 3000 0.25 0.1 69.2 10.0 50 sma4764a 64a 100.0 2.5 350.0 3000 0.25 0.1 76.0 9.0 45 electrical characteristics (t a =25 unless otherwise noted)
surface mount zener diodes revision november 21, 2013 3 / 5 @ socay electronics co., ltd. 2013 specifications are subject to change without notice. please refer to www.socay.com for current information. sma4728a - sz1330a series v z : 3.3 to 330 v p d : 1 w socay electronics co., ltd. www.socay.com nominal zener voltage maximum zener impedance maximum reverse leakage current maximum dc zener current maximum surge current v z @i zt i zt z zt @i zt z zk @i zk i zk i r @v r izm irm part number marking (v) (ma) ( ) ( ) (ma) ( a) (v) (ma) (mapk) sz1110a 11z 110.0 2.3 450.0 4000 0.25 0.1 83.6 8.6 40 sz1120a 12z 120.0 2.0 550.0 4500 0.25 0.1 91.2 7.8 37 sz1130a 13z 130.0 1.9 700.0 5000 0.25 0.1 98.8 7.0 34 sz1150a 15z 150.0 1.7 1000.0 6000 0.25 0.1 114.0 6.4 30 sz1160a 16z 160.0 1.6 1100.0 6500 0.25 0.1 121.6 5.8 28 sz1180a 18z 180.0 1.4 1200.0 7000 0.25 0.1 136.8 5.2 25 sz1200a 20z 200.0 1.2 1900.0 9990 0.25 0.1 152.0 4.7 22 sz1220a 22z 220.0 1.0 1600.0 8000 0.25 0.1 167.2 4.0 20 sz1240a 24z 240.0 0.9 1800.0 8500 0.25 0.1 182.4 3.8 19 sz1250a 25z 250.0 0.9 2000.0 9000 0.25 0.1 190.0 3.6 18 sz1270a 27z 270.0 0.8 2100.0 9000 0.25 0.1 205.0 3.3 16 sz1300a 30z 300.0 0.8 2300.0 9500 0.25 0.1 228.0 3.0 15 sz1330a 33z 330.0 0.7 2500.0 9500 0.25 0.1 250.2 2.7 13 note: (1) the type number listed have a standard tolerance on the nominal zener voltage of 5 % (2) the reverse surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on i zt per jedec electrical characteristics (t a =25 unless otherwise noted)
surface mount zener diodes revision november 21, 2013 4 / 5 @ socay electronics co., ltd. 2013 specifications are subject to change without notice. please refer to www.socay.com for current information. sma4728a - sz1330a series v z : 3.3 to 330 v p d : 1 w socay electronics co., ltd. www.socay.com figure 1 - power temperature derating curve figure 3 - typical thermal resistance v.s. lead length ratings and characteristic curves ( t a =25 c unless otherwise noted ) figure 2 - temperature coefficients v.s. zener voltage t l - lead temperature( c) maximum power dissipation, p d (w) 1.0 0 25 50 75 100 125 150 175 200 0.8 0.6 0.4 0.2 0.0 10 0 10 100 10 1 temperature coefficient, v z , (mv/ c ) zener voltage, v z (v) range 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 175 lead length to heatsink, l, (inches) junction to lead thermal resistance jl , ( c/w) 150 135 100 75 50 25 0 figure 4 - maximum surge power pulse width, p w , (s) 20% duty cycle 10% duty cycle 5% duty cycle 11v-91v non-repetitive rectangular waveform t j =25 c prior to initial peak surge power, p pk , (w) 0.01 0.1 10 100 1000 100 10 1
surface mount zener diodes revision november 21, 2013 5 / 5 @ socay electronics co., ltd. 2013 specifications are subject to change without notice. please refer to www.socay.com for current information. sma4728a - sz1330a series v z : 3.3 to 330 v p d : 1 w socay electronics co., ltd. www.socay.com inches millimeters dimensions min max min max a 0.049 0.064 1.230 1.630 b 0.162 0.179 4.10 4.550 c 0.099 0.109 2.510 2.760 d 0.077 0.089 1.960 2.260 e 0.030 0.060 0.750 1.510 f - 0.008 - 0.203 g 0.192 0.206 4.87 5.220 h 0.006 0.012 0.152 0.305 i 0.070 - 1.800 - j 0.082 - 2.100 - k - 0.090 - 2.300 l 0.082 - 2.100 - dimensions do -214ac (sma) cathode band
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