ZM 4728 ... ZM 4764 Silicon Planar Power Zener Diodes for use in stabilizing and clipping circuits with high power rating. Standard Zener voltage toerance is + 10 %. Add suffix A for +5 % tolerance. Other tolerances available upon request. These diodes are also available in DO-41 case with the type designation 1N4728 ... 1N4764 These diodes are delivered taped. Details see Taping. Absolute Maximum Ratings (T, = 25 C) Cathode Mark = + 2.456 0.1 _t athe 0.4 bq 5 #02 Glass case MELF Weight approx. 0.25g Dimensions in mm Symbol Value Unit Zener Current see Table Characteristics Power Dissipation at T,_, = 25 C ot 1 Ww Junction Temperature T, +175 C Storage Temperature Range T; -65 to + 175 C Valid provided that electrodes are kept at ambient temperature Characteristics at T,_, = 25 C Symbol Min. Typ. Max. Unit Thermal Resistance R - - 170 KAW Junction to Ambient Air ma Forward Voltage V, - - 1.2 V at |. = 200 mA Valid provided that electrodes are kept at ambient tempe rature SEMTECH ELECTRONICS LTD. ( wholly owned subsidiary of AGMEY TECHNOLOGY LTO. )ZM 4728 ... ZM 4764 Type Nominal Test Maximum Zener Impedance Maximum Surge Maximum votage current reverse leakage current current regulator a * # <as+0 VV I,m Z 7 2,2 1,4, mA |, WA VV |,mA Lag MA 2ZM4728 3.3 76 10 400 1.0 150 1 1375 275 2M4729 3.6 69 10 400 1.0 100 1 1260 252 2M4730 3.9 64 9 400 1.0 100 1 1190 234 2ZM4731 4.3 58 9 400 1.0 50 1 1070 217 2M4732 4,7 53 8 500 1.0 10 1 970 193 2M4733 5.1 49 7 550 1.0 10 1 890 178 2ZM4734 5.6 45 5 600 1.0 10 2 810 162 2ZM4735 6.2 41 2 700 1.0 10 3 730 146 2M4736 6.8 37 3.5 700 1.0 10 4 660 133 2M4737 7.5 34 4.0 700 0.5 10 5 605 121 2M4738 8.2 31 4.5 700 0.5 10 6 550 110 2M4739 9.1 28 5.0 700 0.5 10 7 500 100 ZM4740 10 25 7 700 0.25 10 7.6 454 91 2M4741 11 23 8 700 0.25 5 8.4 414 83 ZM4742 12 21 9 700 0.25 5 9.1 380 76 2ZM4743 13 19 10 700 0.25 5 9.9 344 69 2ZM4744 15 17 14 700 0.25 5 11.4 304 61 2ZM4745 16 15.5 16 700 0.25 5 12.2 285 57 ZM4746 18 14 20 750 0.25 5 13.7 250 50 ZM4747 20 12.5 22 750 0.25 5 15.2 225 45 2M4748 22 11.5 23 750 0.25 5 16.7 205 41 ZM4749 24 10.5 25 750 0.25 5 18.2 190 38 ZM4750 27 9.5 35 750 0.25 5 20.6 170 34 2M4751 30 8.5 40 1000 0.25 5 22.8 150 30 2ZM4752 33 7.5 45 1000 0.25 5 25.1 135 27 ZM4753 36 7.0 50 1000 0.25 5 27.4 125 25 2ZM4754 39 ! 6.5 60 1000 0.25 5 29.7 r 415 23 ZM4755 43 6.0 70 1500 0.25 5 32.7 110 22 2M4756 47 5.5 80 1500 0.25 5 35.8 95 19 2ZM4757 51 5.0 95 1500 0.25 5 38.8 90 18 2ZM4758 56 4.5 110 2000 0.25 5 42.6 80 16 ZM4759 62 4.0 125 2000 0.25 5 47.1 70 14 2M4760 68 3.7 150 2000 0.25 5 51.7 65 13 2M4761 75 3.3 175 2000 0.25 5 56.0 60 12 2ZM4762 82 3.0 200 3000 0.25 5 62.2 55 11 2M4763 91 2.8 250 3000 0.25 5 69.2 50 10 2M4764 100 2.5 350 3000 0.25 5 76.0 45 9 1) The Zener Impedance 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 (I,, or I,,,} is superimposed on |, or |. Zener Impedance 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. ) Measured under thermal equilibrium and DC test conditions. @ SEMTECH ELECTRONICS LTD. ( wholly owned subsidiary of HOMEY TECHNOLOGY LTO. ) HGZM 4728 ... ZM 4764 Rot 0.8 06 04 02 Admissible power dissipation versus ambient temperature Valid provided that electrodes are kept at ambient temperature 2M4728 ... 0 100, 200C Tamb SEMTECH ELECTRONICS LTD. ( wholly owned subsidiary of AGMEY TECHNOLOGY LTO. ) HGS