lm4728a...lm4761a surface mount glass passivated power zener diodes for use in stabilizing and clipping circuits with high power rating. absolute maximum ratings (t a = 25 o c) parameter symbol value unit power dissipation p tot 1 w junction temperature t j 150 o c storage temperature range t stg - 55 to + 150 o c characteristics at t a = 25 o c parameter symbol max. unit forward voltage at i f = 200 ma v f 1.2 v 3.7 3.3 0.6 0.25 d1= 1.7 1.5 d2 d2 = d1 +0 -0.203 dimensions in millimeters solderable ends minimelf (do-213aa) plastic package dimensions in millimeters 1 of 3 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification semtech
characteristics at t a = 25 o c type zener voltage 3) dynamic resistance 1) reverse current maximum surge current 4) maximum regulator current 2) v znom v zt at l zt z zt z zk at i zk i r at v r at t a = 25 o c (v) min. (v) max. (v) (ma) max. ( ? )max. ( ? ) (ma) max. (a) (v) i zsm (ma) i zm (ma) lm4728a 3.3 3.13 3.47 76 10 400 1 150 1 1375 275 lm4729a 3.6 3.42 3.78 69 10 400 1 100 1 1260 252 lm4730a 3.9 3.7 4.1 64 9 400 1 100 1 1190 234 lm4731a 4.3 4.08 4.52 58 9 400 1 50 1 1070 217 lm4732a 4.7 4.46 4.94 53 8 500 1 10 1 970 193 lm4733a 5.1 4.84 5.36 49 7 550 1 10 1 890 178 lm4734a 5.6 5.32 5.88 45 5 600 1 10 2 810 162 lm4735a 6.2 5.89 6.51 41 2 700 1 10 3 730 146 lm4736a 6.8 6.46 7.14 37 3.5 700 1 10 4 660 133 lm4737a 7.5 7.12 7.88 34 4 700 0.5 10 5 605 121 lm4738a 8.2 7.79 8.61 31 4.5 700 0.5 10 6 550 110 lm4739a 9.1 8.64 9.56 28 5 700 0.5 10 7 500 100 LM4740A 10 9.5 10.5 25 7 700 0.25 10 7.6 454 91 lm4741a 11 10.45 11.55 23 8 700 0.25 5 8.4 414 83 lm4742a 12 11.4 12.6 21 9 700 0.25 5 9.1 380 76 lm4743a 13 12.35 13.65 19 10 700 0.25 5 9.9 344 69 lm4744a 15 14.25 15.75 17 14 700 0.25 5 11.4 304 61 lm4745a 16 15.2 16.8 15.5 16 700 0.25 5 12.2 285 57 lm4746a 18 17.1 18.9 14 20 750 0.25 5 13.7 250 50 lm4747a 20 19 21 12.5 22 750 0.25 5 15.2 225 45 lm4748a 22 20.9 23.1 11.5 23 750 0.25 5 16.7 205 41 lm4749a 24 22.8 25.2 10.5 25 750 0.25 5 18.2 190 38 lm4750a 27 25.65 28.35 9.5 35 750 0.25 5 20.6 170 34 lm4751a 30 28.5 31.5 8.5 40 1000 0.25 5 22.8 150 30 lm4752a 33 31.35 34.65 7.5 45 1000 0.25 5 25.1 135 27 lm 4753a 36 34.2 37.8 7 50 1000 0.25 5 27.4 125 25 lm4754a 39 37.05 40.95 6.5 60 1000 0.25 5 29.7 115 23 lm4755a 43 40.85 45.15 6 70 1500 0.25 5 32.7 110 22 lm4756a 47 44.65 49.35 5.5 80 1500 0.25 5 35.8 95 19 lm4757a 51 48.45 53.55 5 95 1500 0.25 5 38.8 90 18 lm4758a 56 53.2 58.8 4.5 110 2000 0.25 5 42.6 80 16 lm4759a 62 58.9 65.1 4 125 2000 0.25 5 47.1 70 14 lm4760a 68 64.6 71.4 3.7 150 2000 0.25 5 51.7 65 13 lm4761a 75 71.25 78.75 3.3 175 2000 0.25 5 56 60 12 1) the dynamic resistance is derived from the 60 hz ac voltage whic h results when an ac current having an rms value equal to 10% o f the zener current (i zt or i zk ) is superimposed on i zt or i zk . dynamic resistance is measured at tw o 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 charac teristics table is maximum peak, non-repetitiv e, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current i zt . lm4728a...lm4761a surface mount glass passivated power zener diodes 2 of 3 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification semtech
lm4728a...lm4761a surface mount glass passivated power zener diodes 3 of 3 4008-318-123 sales@twtysemi.com http://www.twtysemi.com product specification semtech
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