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2 / 3 page 1N4728A thru 1N4751A Document Number: 1N4728A thru 1N4751A www.smsemi.com Feb.29, 2012 2 Electrical Characteristics @ 25°C (Unless Otherwise Noted) Note: 1. The JEDEC type numbers shown with an A suffix have a 5% tolerance on nominal zener voltage. No suffix signifies a 10% tolerance, C signifies 2%, and D signifies 1% tolerance. 2. The Zener impedance is derived from the 60 HZ ac voltage that results when an ac current having an rms value equal to 10% of the dc Zener current (IZT or IZK ) is superimposed on IZT or IZK. Zener impedance is measured at two points to ensure a sharp knee on the breakdown curve and eliminate unstable units. 3. The reverse surge current is measured at 25°C ambient using a 1/2 square wave or equivalent sine wave pulse 1/120 second duration superimposed on IZT. 4. Zener voltage (VZ) is measured at TL=25°C (+8,-2°C) and 90 seconds after application of dc current. JEDEC Type Number (Note1) Zener Voltage VZ @ IZT (Note4) Test Current Maximum Dynamic Impedance (Note2) ZZT @ IZT Maximum Knee Impedance ZZk @ IZk Maximum Regulator Current TA=50°C Knee Current Maximum Reverse Current IR @ VR Maximum Surge Current (Note3) VZ (V) IZT (mA) ZZT (Ohms) ZZK (Ohms) IZM (mA) IZK (mA) IR (µA) VR (V) Izsm (mA) 1N4728A 1N4729A 1N4730A 1N4731A 3.3 3.6 3.9 4.3 76.0 69.0 64.0 58.0 10.0 10.0 9.0 9.0 400 400 400 400 276 252 234 217 1.00 1.00 1.00 1.00 100 100 50 10 1.0 1.0 1.0 1.0 1380 1260 1190 1070 1N4732A 1N4733A 1N4734A 1N4735A 4.7 5.1 5.6 6.2 53.0 49.0 45.0 41.0 8.0 7.0 5.0 2.0 500 550 600 700 193 178 162 146 1.00 1.00 1.00 1.00 10 10 10 10 1.0 1.0 2.0 3.0 970 890 810 730 1N4736A 1N4737A 1N4738A 1N4739A 6.8 7.5 8.2 9.1 37.0 34.0 31.0 28.0 3.5 4.0 4.5 5.0 700 700 700 700 133 121 110 100 1.00 0.50 0.50 0.50 10 10 10 10 4.0 5.0 6.0 7.0 660 605 550 500 1N4740A 1N4741A 1N4742A 1N4743A 10.0 11.0 12.0 13.0 25.0 23.0 21.0 19.0 7.0 8.0 9.0 10.0 700 700 700 700 91 83 76 69 0.25 0.25 0.25 0.25 10 5 5 5 7.6 8.4 9.1 9.9 454 414 380 344 1N4744A 1N4745A 1N4746A 1N4747A 15.0 16.0 18.0 20.0 17.0 15.5 14.0 12.5 14.0 16.0 20.0 22.0 700 700 750 750 61 57 50 45 0.25 0.25 0.25 0.25 5 5 5 5 11.4 12.2 13.7 15.2 304 285 250 225 1N4748A 1N4749A 1N4750A 1N4751A 22.0 24.0 27.0 30.0 11.5 10.5 9.5 8.5 23.0 25.0 35.0 40.0 750 750 750 1000 41 38 34 30 0.25 0.25 0.25 0.25 5 5 5 5 16.7 18.2 20.6 22.8 205 190 170 150 打印无效 |
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