6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (978) 689-0803 website: http://www.microsemi.com 13 maximum ratings operating temperature: -65c to +175c storage temperature: -65c to +175c dc power dissipation: 500 mw @ +50c power derating: 4 mw / c above +50c forward voltage @ 200ma: 1.1 volts maximum ? 1n746a-1 thru 1n759-1 available in jan, jantx and jantxv per mil-prf-19500/127 ? 1n4370a-1 thru 1n4372a-1 available in jan, jantx and jantxv per mil-prf-19500/127 ? double plug construction ? metallurgically bonded 1n746 thru 1n759a and 1n746a-1 thru 1n759a-1 and 1n4370 thru 1n4372a and 1n4370a-1 thru 1n4372a-1 figure 1 design data case: hermetically sealed glass case. do ? 35 outline. lead material: copper clad steel. lead finish: tin / lead thermal resistance: ( r o jec ): 250 c/w maximum at l = .375 inch thermal impedance: ( z o jx ): 35 c/w maximum polarity: diode to be operated with the banded (cathode) end positive. mounting position: any. electrical characteristics @ 25c jedec nominal zener maximum maximum maximum type zener test zener reverse current zener number voltage current impedance i r @ v r current v z @ 1 zt 1 zt (note 3) 1 zm (note 1) (note 2) z zt @ 1 zt volts ma ohms a volts ma 1n4370a 2.4 20 30 100 1.0 155 1n4371a 2.7 20 30 60 1.0 140 1n4372a 3.0 20 29 30 1.0 125 1n746a 3.3 20 28 5 1.0 120 1n747a 3.6 20 24 3 1.0 110 1n748a 3.9 20 23 2 1.0 100 1n749a 4.3 20 22 2 1.0 90 1n750a 4.7 20 19 5 1.5 85 1n751a 5.1 20 17 5 2.0 75 1n752a 5.6 20 11 5 2.5 70 1n753a 6.2 20 7 5 3.5 65 1n754a 6.8 20 5 2 4.0 60 1n755a 7.5 20 6 2 5.0 55 1n756a 8.2 20 8 1 6.0 50 1n757a 9.1 20 10 1 7.0 45 1n758a 10.0 20 17 1 8.0 40 1n759a 12.0 20 30 1 9.0 35 note 1 zener voltage tolerance on "a" suffix is + 5%. no suffix denotes + 10% tolerance, "c" suffix denotes + 2% tollerance and "d" suffix denotes + 1% tolerance. note 2 zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25c + 3c. note 3 zener impedance is derived by superimposing on 1 zt a 60hz rms a.c. current equal to 10% of 1 zt
14 1n746 thru 1n759a and 1n4370 thru 1n4372a including -1 versions 0 25 50 75 100 125 150 175 t l , lead temperature (c) 3/8? from body power derating curve 500 400 300 200 100 0 pd, rated power dissipation (mw) 1 00 50 20 10 5 2 1 4 6 10 20 40 60 100 figure 3 operating current (ma) zener impedance vs. operating current zener impedance z zt (ohms)
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