digitron semiconductors 144 market street kenilworth nj 07033 usa phone +1.908.245-7200 1n4728-1n4764 silicon 1 watt zener diodes maximum ratings characteristics value power dissipation @ 25c 1w junction temperature 175c operating and storage temperature range -65 to +175c maximum thermal resistance, junction to lead @ 3/8 inch lead length from body 80c/w maximum thermal resistance, junction to ambient when mounted on fr4 pc board with 4mm2 co pper pads and track width 1mm, length 25mm 140c/w steady state power @ 3/8 inch lead length from body when mounted on fr4 pc board with 4mm2 co pper pads and track width 1mm, length 25mm 1.0w @ t l 95c 1.0w @ t a 35c forward voltage @ 200ma 1.2 volts maximum solder temperatures 260c for 10 s maximum electrical characteri stics @ 25c ambient zener voltage (4) (v z ) test current (l zt ) maximum dynamic impedance (2) (z zt @ l zt ) maximum reverse current (l r @ v r ) test voltage (v r ) maximum regulator current (l zm ) t a = 50c maximum knee impedance (2) (z zk @ l zk ) test current (l zk ) maximum (surge) current (3) (l s ) type number volts ma ohms a volts ma ohms ma ma 1n4728 3.3 76 10 100 1 276 400 1.0 1380 1n4729 3.6 69 10 100 1 252 400 1.0 1260 1n4730 3.9 64 9.0 50 1 234 400 1.0 1190 1n4731 4.3 58 9.0 10 1 217 400 1.0 1070 1n4732 4.7 53 8.0 10 1 193 500 1.0 970 1n4733 5.1 49 7.0 10 1 178 550 1.0 890 1n4734 5.6 45 5.0 10 2 162 600 1.0 810 1n4735 6.2 41 2.0 10 3 146 700 1.0 730 1n4736 6.8 37 3.5 10 4 133 700 1.0 660 1n4737 7.5 34 4.0 10 5 121 700 0.5 605 1n4738 8.2 31 4.5 10 6 110 700 0.5 550 1n4739 9.1 28 5.0 10 7 100 700 0.5 500 1n4740 10 25 7.0 10 7.6 91 700 0.25 454 1n4741 11 23 8.0 5 8.4 83 700 0.25 414 1n4742 12 21 9.0 5 9.1 76 700 0.25 380 1n4743 13 19 10 5 9.9 69 700 0.25 344 1n4744 15 17 14 5 11.4 61 700 0.25 304 1n4745 16 15.5 16 5 12.2 57 700 0.25 285 1n4746 18 14 20 5 13.7 50 750 0.25 250 1n4747 20 12.5 22 5 15.2 45 750 0.25 225 1N4748 22 11.5 23 5 16.7 41 750 0.25 205 1n4749 24 10.5 25 5 18.2 38 750 0.25 190 1n4750 27 9.5 35 5 20.6 34 750 0.25 170 1n4751 30 8.5 40 5 22.8 30 1000 0.25 150 sales@digitroncorp.com fax +1.908.245-0555 www.digitroncorp.com rev. 20120912
digitron semiconductors 144 market street kenilworth nj 07033 usa phone +1.908.245-7200 1n4728-1n4764 silicon 1 watt zener diodes electrical characteri stics @ 25c ambient zener voltage (v z ) test current (l zt ) maximum dynamic impedance (z zt @ l zt ) maximum reverse current (l r @ v r ) test voltage (v r ) maximum regulator current (l zm ) t a = 50c maximum knee impedance (z zk @ l zk ) test current (l zk ) maximum (surge) current (l s ) type number volts ma ohms a volts ma ohms ma ma 1n4752 33 7.5 45 5 25.1 27 1000 0.25 135 1n4753 36 7.0 50 5 27.4 25 1000 0.25 125 1n4754 39 6.5 60 5 29.7 23 1000 0.25 115 1n4755 43 6.0 70 5 32.7 22 1500 0.25 110 1n4756 47 5.5 80 5 35.8 19 1500 0.25 95 1n4757 51 5.0 95 5 38.8 18 1500 0.25 90 1n4758 56 4.5 110 5 42.6 16 2000 0.25 80 1n4759 62 4.0 125 5 47.1 14 2000 0.25 70 1n4760 68 3.7 150 5 51.7 13 2000 0.25 65 1n4761 75 3.3 175 5 56.0 12 2000 0.25 60 1n4762 82 3.0 200 5 62.2 11 3000 0.25 55 1n4763 91 2.8 250 5 69.2 10 3000 0.25 50 1n4764 100 2.5 350 5 76.0 9 3000 0.25 45 note 1: an ?a? suffix indicates a 5% tolerance on nominal zene r voltage. no suffix indicates a 10% tolerance, ?c? indicates a 2% tolerance and a ?d? suffix indicates 1% tolerance. note 2: the zener impedance is derived from the 60hz ac voltage that results when an ac current having an rms value equal to 10 % of the dc zener current is superimposed on i zt or i zk . zener impedance is measured at two points to ensure a sharp knee on the breakdown curve and eliminate unstable units. note 3: the reverse surge current is measured at 25c ambient using a ? square wave or equivalent sine wave pulse 1/120 second duration superimposed on i zt. note 4: zener voltage (v z ) is measured at tl = 25c and 90 seco nds after application of dc current. mechanical characteristics case: do-41 glass marking: body painted, alpha-numeric polarity: cathode band available non-rohs (standard) or rohs compliant (add pbf suffix). available as ?hr? (high reliability) screened per mil-prf- 19500, jantx level. add ?hr? suffix to base part number. sales@digitroncorp.com fax +1.908.245-0555 www.digitroncorp.com rev. 20120912
digitron semiconductors 144 market street kenilworth nj 07033 usa phone +1.908.245-7200 1n4728-1n4764 silicon 1 watt zener diodes sales@digitroncorp.com fax +1.908.245-0555 www.digitroncorp.com rev. 20120912
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