ZM4751A-M

ZM4728...ZM4756-M Silicon Planar Power Zener Diodes for use in stabilizing and clipping circuits with high power rating. Standard Zener voltage tolerance is ±10%. Add suffix "A" for ±5% tolerance and suffix "B" for ±2% tolerance. Other tolerances available are upon request. LL-41 These diodes are also available in DO-41 case with the type designation 1N4728...1N4761 Absolute Maximum Ratings (Ta = 25 OC) Parameter Power Dissipation Ptot Junction Temperature Storage Temperature Range 1) Symbol Value 1 1) Unit W Tj 175 O C Tstg - 65 to + 175 O Symbol Max. Unit 1) K/W C Valid provided that electrodes are kept at ambient temperature. Characteristics at Ta = 25 OC Parameter Thermal Resistance Junction to Ambient Air Forward Voltage at IF = 200 mA 1) RθJA VF 170 1.2 V Valid provided that electrodes are kept at ambient temperature. ® Dated: 25/11/2011 Rev: 01 ZM4728...ZM4756-M Characteristics at Ta = 25 OC Zener Voltage 3) Type Dynamic Resistance 1) Reverse Current Maximum Surge Maximum Current 4) Regulator Current 2) at Ta = 25 OC VZnom at lZT ZZT at lZT ZZK at IZK IR at VR (V) (mA) Max. (Ω) (mA) Max. (Ω) (mA) Max. (µA) (V) IZSM (mA) IZM (mA) ZM4728 3.3 76 10 76 400 1 150 1 1375 275 ZM4729 3.6 69 10 69 400 1 100 1 1260 252 ZM4730 3.9 64 9 64 400 1 100 1 1190 234 ZM4731 4.3 58 9 58 400 1 50 1 1070 217 ZM4732 4.7 53 8 53 500 1 10 1 970 193 ZM4733 5.1 49 7 49 550 1 10 1 890 178 ZM4734 5.6 45 5 45 600 1 10 2 810 162 ZM4735 6.2 41 2 41 700 1 10 3 730 146 ZM4736 6.8 37 3.5 37 700 1 10 4 660 133 ZM4737 7.5 34 4 34 700 0.5 10 5 605 121 ZM4738 8.2 31 4.5 31 700 0.5 10 6 550 110 ZM4739 9.1 28 5 28 700 0.5 10 7 500 100 ZM4740 10 25 7 25 700 0.25 10 7.6 454 91 ZM4741 11 23 8 23 700 0.25 5 8.4 414 83 ZM4742 12 21 9 21 700 0.25 5 9.1 380 76 ZM4743 13 19 10 19 700 0.25 5 9.9 344 69 ZM4744 15 17 14 17 700 0.25 5 11.4 304 61 ZM4745 16 15.5 16 15.5 700 0.25 5 12.2 285 57 ZM4746 18 14 20 14 750 0.25 5 13.7 250 50 ZM4747 20 12.5 22 12.5 750 0.25 5 15.2 225 45 ZM4748 22 11.5 23 11.5 750 0.25 5 16.7 205 41 ZM4749 24 10.5 25 10.5 750 0.25 5 18.2 190 38 ZM4750 27 9.5 35 9.5 750 0.25 5 20.6 170 34 ZM4751 30 8.5 40 8.5 1000 0.25 5 22.8 150 30 ZM4752 33 7.5 45 7.5 1000 0.25 5 25.1 135 27 ZM4753 36 7 50 7 1000 0.25 5 27.4 125 25 ZM4754 39 6.5 60 6.5 1000 0.25 5 29.7 115 23 ZM4755 43 6 70 6 1500 0.25 5 32.7 110 22 ZM4756 47 5.5 80 5.5 1500 0.25 5 35.8 95 19 1) The dynamic resistance is derived from the 60 Hz AC voltage which results when an AC current having an RMS value equal to 10% of the Zener Current (IZT or IZK) is superimposed on IZT or IZK. Dynamic resistance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. 2) Valid provided that electrodes are kept at ambient temperature. 3) Tested with pulses tp = 20 ms. 4) The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current IZT. ® Dated: 25/11/2011 Rev: 01 ZM4728...ZM4756-M Power Dissipation vs Ambient Temperature Power Dissipation: Ptot (mW) 1200 1000 800 600 400 200 0 0 25 50 75 100 125 150 175 Ambient Temperature: Ta ( C) O ® Dated: 25/11/2011 Rev: 01