20 stern ave. sp^greld, new jersey 07081 telephone: (973) 376-2922 1n4728thru 1 n4764 zener diodes do-41 glass _ max .00.102(2.6) -cathode mark max. 00.034(0.86) dimensions in inches and (millimeters) features * 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. other zener voltages and tolerances are available upon request. ? these diodes are also available in the melf case with type designation zm4728 thru zm4764 mechanical data case: do-41 glass case weight: approx. 0.35 g maximum ratings ratings at 25"c ambient temperature unless otherwise specified. zener current (see table "characteristics") power dissipation at tamb = 25c junction temperature storage temperature range symbol plot tj ts value 1.0<1> 175 -65 to +175 unit watts c c characteristics at tamb = 25 c thermal resistance junction to ambient air forward voltage at if = 200 ma symbol rthja vf min. - - typ. - - max. 170<1> 1.2 unit c/w volts notes: 1) valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature ^ i s'eink niiijuuon n??rv?* ih? right tn thong? talcandilioiw, pmnwttr limits nnd pickup dimension* wiihotrt nolle* inl'nrmulion luniiihttl by nl svmi-cundlklws h mkved to h? hold otiamttt nml rdiubh u llw lint* of going i? prw*. however \ ,'fini (i iiulin.h>r< imiiitni >hi re->ptinability i'nr .in} cin'o .'f kiniuiuih jiwuvural in |h ???"* n' scnn-4.i ir.n n-i-f. hi lh " l:m:i-krll ire tii
1n4728thru 1n4764 electrical characteristics ratings at 25'c ambient temperature unless otherwise specified. type 1n4728 1n4729 1n4730 1n4731 1n4732 1n4733 1n4734 1n4735 1n4736 1n4737 1n4738 1n4739 1n4740 1n4741 1n4742 1n4743 1n4744 1 n4745 1 n4746 1n4747 1n4748 1n4749 1n4750 1 n4751 1n4752 1 n4753 1n4754 1n4755 1n4756 1n4757 1n4758 1n4759 1n4760 1n4761 1n4762 1n4763 1 n4764 nominal zener voltage131 at izt vzv 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 test current izt ma 76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 3.3 3.0 2.8 2.5 maximum zener impedance111 zzt at izt n 10 10 9 9 8 7 5 2 3.5 4.0 4.5 5.0 7 8 9 10 14 16 20 22 23 25 35 40 45 50 60 70 80 95 110 125 150 175 200 250 350 zzk a 400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000 at izk ma 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 maximum reverse leakage current ir ha 100 100 50 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 atvr v 1 1 1 1 1 1 2 3 4 5 6 7 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0 surge current at ta = 25?c irtna 1380 1260 1190 1070 970 890 810 730 660 605 550 500 454 414 380 344 304 285 250 225 205 190 170 150 135 125 115 110 95 90 80 70 65 60 55 50 45 maximum regulator current'21 izuma 276 252 234 217 193 178 162 146 133 121 110 100 91 83 76 69 61 57 50 45 41 38 34 30 27 25 23 22 19 18 16 14 13 12 11 10 9 notes: (1) the zener impedance is derived from the 1 khz ac voltage which results when an ac current having an rms value equal to 10% of the zener current (izi or izk) is superimposed on izt or izk 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 at a distance of 10mm from case are kept at ambient temperature (3) measured under thermal equilibrium and dc test conditions
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