23 mils 15 mils 15 mils 23 mils 197 ? zener diode chips ? all junctions completely protected with silicon dioxide ? electrically equivalent to 1n4678 thru 1n4717 ? 0.5 watt capability with proper heat sinking ? 50 a, low operating current, zener diodes ? compatible with all wire bonding and die attach techniques, with the exception of solder reflow cd4678 thru cd4717 design data metallization: top: (anode).....................al back: (cathode)................au al thickness ....... ......25,000 ? min gold thickness ..........4,000 ? min chip thickness ....................10 mils circuit layout data: for zener operation, cathode must be operated positive with respect to anode. tolerances: all dimensions + 2 mils cdi nominal zener maximum maximum reverse maximum type zener test voltage leakage dc zener number voltage current regulation current current v z l zt 3v z l r @ v r l zm (note 1) (note 3) (note 2) volts a volts a volts ma cd4678 1.8 50 0.70 7.5 1.0 120.0 cd4679 2.0 50 0.70 5.0 1.0 110.0 CD4680 2.2 50 0.75 4.0 1.0 100.0 cd4681 2.4 50 0.80 2.0 1.0 95.0 cd4682 2.7 50 0.80 1.0 1.0 90.0 cd4683 3.0 50 0.90 0.8 1.0 85.0 cd4684 3.3 50 0.95 7.5 1.5 80.0 cd4685 3.6 50 0.95 7.5 2.0 75.0 cd4686 3.9 50 0.97 5.0 2.0 70.0 cd4687 4.3 50 0.99 4.0 2.0 65.0 cd4688 4.7 50 0.99 10.0 3.0 60.0 cd4689 5.1 50 0.97 10.0 3.0 55.0 cd4690 5.6 50 0.96 10.0 4.0 50.0 cd4691 6.2 50 0.95 10.0 5.0 45.0 cd4692 6.8 50 0.90 10.0 5.1 35.0 cd4693 7.5 50 0.75 10.0 5.7 31.8 cd4694 8.2 50 0.50 1.0 6.2 29.0 cd4695 8.7 50 0.10 1.0 6.6 27.4 cd4696 9.1 50 0.08 1.0 6.9 26.2 cd4697 10.0 50 0.10 1.0 7.6 24.8 cd4698 11.0 50 0.11 0.05 8.4 21.6 cd4699 12.0 50 0.12 0.05 9.1 20.4 cd4700 13.0 50 0.13 0.05 9.8 19.0 cd4701 14.0 50 0.14 0.05 10.6 17.5 cd4702 15.0 50 0.15 0.05 11.4 16.3 cd4703 16.0 50 0.16 0.05 12.1 15.4 cd4704 17.0 50 0.17 0.05 12.9 14.5 cd4705 18.0 50 0.18 0.05 13.6 13.2 cd4706 19.0 50 0.19 0.05 14.4 12.5 cd4707 20.0 50 0.20 0.01 15.2 11.9 cd4708 22.0 50 0.22 0.01 16.7 10.8 cd4709 24.0 50 0.24 0.01 18.2 9.9 cd4710 25.0 50 0.25 0.01 19.0 9.5 cd4711 27.0 50 0.27 0.01 20.4 8.8 cd4712 28.0 50 0.28 0.01 21.2 8.5 cd4713 30.0 50 0.30 0.01 22.8 7.9 cd4714 33.0 50 0.33 0.01 25.0 7.2 cd4715 36.0 50 0.36 0.01 27.3 6.6 cd4716 39.0 50 0.39 0.01 29.8 6.1 cd4717 43.0 50 0.43 0.01 32.6 5.5 note 1 the jedec type numbers shown above have a standard tolerance of + 5% of the nominal zener voltage. vz is measured with the diode in thermal equilibrium at 25c + 3c. note 2 v z @ 100 a minus v z @ 10 a. note 3 zener voltage is read using a pulse measurement, 10 milliseconds maximum. maximum ratings operating temperatures: -65c to +175c storage temperatures: -65c to +175c forward voltage @ 200 ma: 1.5 volts maximum electrical characteristics @ 25c, unless otherwise speci?ed. backside is cathode figure 1 6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (978) 689-0803 website: http://www.microsemi.com
198 cd4678 thru cd4717 0 25 50 75 100 125 150 175 200 t a , ambient temperature (c) power derating curve 600 500 400 300 200 100 0 pd, rated power dissipation (mw) figure 2 .1 .2 .3 .4 .5 1 2 5 10 20 30 40 50 100 operating current l zt (ma) figure 3 zener impedance vs. operating current 1000 500 400 300 200 100 50 40 30 20 10 5 4 3 2 1 zener impedance z zt (ohms) 3.3 volt 5.1 volt 27 volt 11 volt 6.2 volt
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