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| zm 4728...zm 4764 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. these diodes are also available in do-41 case with the type designation 1n4728...1n4764 . absolute maximum ratings (t a = 25 o c) symbol value unit zener current see table ?characteristics? power dissipation p tot 1 1) w junction temperature t j 175 o c storage temperature range t s -65 to +175 o c 1) valid provided that electrodes ar e kept at ambient temperature. characteristics at t amb = 25 o c symbol min. typ. max. unit thermal resistance junction to ambient air r tha - - 170 1) k/w forward voltage at i f = 200ma v f - - 1.2 v 1) valid provided that electrodes ar e kept at ambient temperature. ll-41 product specification 1 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com
nominal zener voltage 3) test current maximum zener impedance 1) maximum reverse leakage current surge current maxi- mum regulator current 2) type at i zt vz v i zt ma at i zt vz ? vzk ? at i zk ma i r a at v r v at t a = 25 o c i r ma i zm ma ZM4728 3.3 76 10 400 1 150 1 1375 275 ZM4729 3.6 69 10 400 1 100 1 1260 252 ZM4730 3.9 64 9 400 1 100 1 1190 234 ZM4731 4.3 58 9 400 1 50 1 1070 217 ZM4732 4.7 53 8 500 1 10 1 970 193 ZM4733 5.1 49 7 550 1 10 1 890 178 ZM4734 5.6 45 5 600 1 10 2 810 162 ZM4735 6.2 41 2 700 1 10 3 730 146 ZM4736 6.8 37 3.5 700 1 10 4 660 133 ZM4737 7.5 34 4.0 700 0.5 10 5 605 121 ZM4738 8.2 31 4.5 700 0.5 10 6 550 110 ZM4739 9.1 28 5.0 700 0.5 10 7 500 100 ZM4740 10 25 7 700 0.25 10 7.6 454 91 ZM4741 11 23 8 700 0.25 5 8.4 414 83 ZM4742 12 21 9 700 0.25 5 9.1 380 76 ZM4743 13 19 10 700 0.25 5 9.9 344 69 ZM4744 15 17 14 700 0.25 5 11.4 304 61 ZM4745 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 ZM4748 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 ZM4751 30 8.5 40 1000 0.25 5 22.8 150 30 ZM4752 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 ZM4754 39 6.5 60 1000 0.25 5 29.7 115 23 ZM4755 43 6.0 70 1500 0.25 5 32.7 110 22 ZM4756 47 5.5 80 1500 0.25 5 35.8 95 19 ZM4757 51 5.0 95 1500 0.25 5 38.8 90 18 ZM4758 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 ZM4760 68 3.7 150 2000 0.25 5 51.7 65 13 ZM4761 75 3.3 175 2000 0.25 5 56.0 60 12 ZM4762 82 3.0 200 3000 0.25 5 62.2 55 11 ZM4763 91 2.8 250 3000 0.25 5 69.2 50 10 ZM4764 100 2.5 350 3000 0.25 5 76 45 9 1) the zener impedance is derived from the 60 hz ac volt age which results when an ac current having an rms value equal to 10% of the zener current (i zt or i zk ) is superimposed on i zt or i zk . zener impedance is measured at two points to insure a sharp knee on the break down curve and to eliminate unstable units. 2) valid provided that electrodes are kept at ambient temperature. 3) measured under thermal equilibrium and dc test conditions. zm 4728...zm 4764 product specification 2 of 2 4008-318-123 sales@twtysemi.com http://www.twtysemi.com |
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