1SMA4728A-1SMA4764A Surface Mount Zener Diodes VZ : 3.3 - 100Volts PD : 1 Watt Features Complete voltage range 3.3 to 100 volts High peak reverse power dissipation High reliability Low leakage current Standard zener voltage tolerance is ± 5%. Pb / RoHS Free 1.6 ± 0.25 Mechanical Data 4.2 ± 0.25 1.3 ± 0.2 5.3 ± 0.35 SMA 2.6 ± 0.15 Case : SMA Molded plastic Epoxy : UL94V-O rate flame retardant Polarity : Color band denotes cathode end Mounting position : Any Weight : 0.060 gram (Approximately) 2.3 ± 0.2 1.6 ± 0.25 Dimensions in millimeters MAXIMUM RATINGS Rating at 25 °C ambient temperature unless otherwise specified Rating Symbol Value Unit DC Power Dissipation at T L = 75 °C (Note1) PD 1.0 W Maximum Forward Voltage at IF = 200 mA VF 1.2 V Junction Temperature Range TJ - 55 to + 150 °C Storage Temperature Range TS - 55 to + 150 °C Note : (1) P.C.B. Mounted on 0.31x0.31x0.08" (8x8x2mm) copper areas pads. PD, MAXIMUM DISSIPATION (WATTS) Fig. 1 MAXIMUM CONTINUOUS POWER DERATING 1.25 1.00 0.75 0.50 P.C.B. Mounted on 0.31x0.31x0.08" (8x8x2mm) copper areas pads 0.25 0 0 25 50 75 100 125 150 175 TL, LEAD TEMPERATURE (°C) http://www.luguang.cn mail:[email protected] 1SMA4728A-1SMA4764A Surface Mount Zener Diodes ELECTRICAL CHARACTERISTICS Rating at 25 °C ambient temperature unless otherwise specified Nominal Zener Type Device Marking Voltage VZ @ IZT IZT Maximum Zener ZZT @ IZT Impedance ZZK @ IZK IZK Maximum Reverse Maximum DC Maximum Leakage Current IR @ V R Zener Current IZM Surge Current IRM(2) (V) (mA) (Ω) (Ω) (mA) (μA) (V) (mA) (mApk) 1SMA4728A 728A 3.3 76.0 10 400 1.0 100 1.0 276 1380 1SMA4729A 729A 3.6 69.0 10 400 1.0 100 1.0 252 1260 1SMA4730A 730A 3.9 64.0 9.0 400 1.0 50 1.0 234 1190 1SMA4731A 731A 4.3 58.0 9.0 400 1.0 10 1.0 217 1070 1SMA4732A 732A 4.7 53.0 8.0 500 1.0 10 1.0 193 970 1SMA4733A 733A 5.1 49.0 7.0 550 1.0 10 1.0 178 890 1SMA4734A 734A 5.6 45.0 5.0 600 1.0 10 2.0 162 810 1SMA4735A 735A 6.2 41.0 2.0 700 1.0 10 3.0 146 730 1SMA4736A 736A 6.8 37.0 3.5 700 1.0 10 4.0 133 660 1SMA4737A 737A 7.5 34.0 4.0 700 0.5 10 5.0 121 605 1SMA4738A 738A 8.2 31.0 4.5 700 0.5 10 6.0 110 550 1SMA4739A 739A 9.1 28.0 5.0 700 0.5 10 7.0 100 500 1SMA4740A 740A 10 25.0 7.0 700 0.25 10 7.6 91 454 1SMA4741A 741A 11 23.0 8.0 700 0.25 5.0 8.4 83 414 1SMA4742A 742A 12 21.0 9.0 700 0.25 5.0 9.1 76 380 1SMA4743A 743A 13 19.0 10 700 0.25 5.0 9.9 69 344 1SMA4744A 744A 15 17.0 14 700 0.25 5.0 11.4 61 305 1SMA4745A 745A 16 15.5 16 700 0.25 5.0 12.2 57 285 1SMA4746A 746A 18 14.0 20 750 0.25 5.0 13.7 50 250 1SMA4747A 747A 20 12.5 22 750 0.25 5.0 15.2 45 225 1SMA4748A 748A 22 11.5 23 750 0.25 5.0 16.7 41 205 1SMA4749A 749A 24 10.5 25 750 0.25 5.0 18.2 38 190 1SMA4750A 750A 27 9.5 35 750 0.25 5.0 20.6 34 170 1SMA4751A 751A 30 8.5 40 1000 0.25 5.0 22.8 30 150 1SMA4752A 752A 33 7.5 45 1000 0.25 5.0 25.1 27 135 1SMA4753A 753A 36 7.0 50 1000 0.25 5.0 27.4 25 125 1SMA4754A 754A 39 6.5 60 1000 0.25 5.0 29.7 23 115 1SMA4755A 755A 43 6.0 70 1500 0.25 5.0 32.7 22 110 1SMA4756A 756A 47 5.5 80 1500 0.25 5.0 35.8 19 95 1SMA4757A 757A 51 5.0 95 1500 0.25 5.0 38.8 18 90 1SMA4758A 758A 56 4.5 110 2000 0.25 5.0 42.6 16 80 1SMA4759A 759A 62 4.0 125 2000 0.25 5.0 47.1 14 70 1SMA4760A 760A 68 3.7 150 2000 0.25 5.0 51.7 13 65 1SMA4761A 761A 75 3.3 175 2000 0.25 5.0 56.0 12 60 1SMA4762A 762A 82 3.0 200 3000 0.25 5.0 62.2 11 55 1SMA4763A 763A 91 2.8 250 3000 0.25 5.0 69.2 10 50 1SMA4764A 764A 100 2.5 350 3000 0.25 5.0 76.0 9.0 45 Notes : (1) The type number listed have a standard tolerance on the nominal zener voltage of ± 5%. (2) The revese surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC Method http://www.luguang.cn mail:[email protected]