23 mils 15 mils 15 mils 23 mils 181 ? 1n962b thru 1n986b available in janhc and jankc per mil-prf-19500/117 ? zener diode chips ? 0.5 watt capability with proper heat sinking ? all junctions completely protected with silicon dioxide ? compatible with all wire bonding and die attach techniques, with the exception of solder reflow CD957B thru cd986b backside is cathode figure 1 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 maximum ratings operating temperature: -65c to +175c storage temperature: -65c to +175c forward voltage @ 200ma: 1.5 volts maximum electrical characteristics @ 25c cdi nominal zener max. dc type zener test maximum zener impedance zener max. reverse number voltage current (note 3) current leakage current v z l zt l zm l r @ v r (note 1) (note 2) z zt @ l zt z zk @ l zk volts ma ohms ohms ma ma a volts CD957B 6.8 18.5 4.5 700 1.0 55 5.0 5.2 cd958b 7.5 16.5 5.5 700 .5 50 5.0 5.7 cd959b 8.2 15.0 6.5 700 .5 45 5.0 6.2 cd960b 9.1 14.0 7.5 700 .5 41 5.0 6.9 cd961b 10 12.5 8.5 700 .25 38 2.0 7.6 cd962b 11 11.5 9.5 700 .25 32 1.0 8.4 cd963b 12 10.5 11.5 700 .25 31 1.0 9.1 cd964b 13 9.5 13 700 .25 28 0.5 9.9 cd965b 15 8.5 16 700 .25 25 0.5 11 cd966b 16 7.8 17 700 .25 24 0.5 12 cd967b 18 7.0 21 750 .25 20 0.5 14 cd968b 20 6.2 25 750 .25 18 0.5 15 cd969b 22 5.6 29 750 .25 16 0.5 17 cd970b 24 5.2 33 750 .25 15 0.5 18 cd971b 27 4.6 41 750 .25 13 0.5 21 cd972b 30 4.2 49 1000 .25 12 0.5 23 cd973b 33 3.8 58 1000 .25 11 0.5 25 cd974b 36 3.4 70 1000 .25 10 0.5 27 cd975b 39 3.2 90 1000 .25 9.5 0.5 30 cd976b 43 3.0 93 1500 .25 8.8 0.5 33 cd977b 47 2.7 105 1500 .25 7.9 0.5 36 cd978b 51 2.5 125 1500 .25 7.4 0.5 39 cd979b 56 2.2 150 2000 .25 6.8 0.5 43 cd980b 62 2.0 185 2000 .25 6.0 0.5 47 cd981b 68 1.8 230 2000 .25 5.5 0.5 52 cd982b 75 1.7 270 2000 .25 5.0 0.5 56 cd983b 82 1.5 330 3000 .25 4.6 0.5 62 cd984b 91 1.4 400 3000 .25 4.1 0.5 69 cd985b 100 1.3 500 3000 .25 3.7 0.5 76 cd986b 110 1.1 750 4000 .25 3.3 0.5 84 note 1 zener voltage range equals nominal voltage + 5% for ?b? suffix. ?a? suffix denotes + 10%, no suffix denotes + 20%. "c" suffix = + 2% and "d" suffix = + 1%. note 2 zener voltage is read using a pulse measurement, 10 milliseconds maximum. note 3 zener impedance is derived by superimposing on 1 zt a 60hz rms a.c. current equal to 10% of 1 zt 6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (978) 689-0803 website: http://www.microsemi.com
182 CD957B thru cd986b .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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