design data case: d-5a, hermetically sealed glass case, per mil-prf- 19500/406 lead finish: tin / lead thermal resistance: ( r o jec ): 20 c/w maximum at l = 0 thermal impedance: ( z o jx ): 4.5 c/w maximum polarity: diode to be operated with the banded (cathode) end positive. mounting surface selection: the axial coefficient of expansion (coe) of this device is approximately + 4ppm / c. the coe of the mounting surface system should be selected to provide a suitable match with this device. millimeters inches dim min max min max d 2.31 2.62 0.091 0.103 f 0.48 0.71 0.019 0.028 g 4.28 5.08 0.168 0.200 s 0.08min. 0.003min. figure 1 153 6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (781) 689-0803 website: http://www.microsemi.com ? available in jan, jantx, jantxv and jans per mil-prf-19500/406 ? 1.5 watt zener diodes ? non cavity construction ? metallurgically bonded 1n6485us thru 1n6491us and 1n4460us and 1n4461us electrical characteristics @ 25c, unless otherwise specified maximum ratings operating temperature: -65c to +175c storage temperature: -65c to +200c power dissapation: 1.5w @ t a =+25c power derating: 10mw/c above t a =+25c forward voltage: 1.0v dc @ i f =200ma dc 1.5 v dc @ i f =1a dc zener test dynamic knee test reverse test maximum v z (reg) maximum voltage current impedence impedence current current voltage current v v v z surge type (nom.) i zt (max.) (max.) i zk (max.) v r i zm 5% z zt @i zt z zk @i zt i r @v r volts ma ohms ohms ma a volts ma volts amps 1n6485us 3.3 76.0 10 400 1.0 50 1.0 433 .90 4.2 1n6486us 3.6 69.0 10 400 1.0 50 1.0 397 .80 3.9 1n6487us 3.9 64.0 9 400 1.0 35 1.0 366 .75 3.6 1n6488us 4.3 58.0 9 400 1.0 5.0 1.0 332 .70 3.3 1n6489us 4.7 53.0 8 500 1.0 4.0 1.0 304 .60 3.0 1n6490us 5.1 49.0 7 500 1.0 1.0 1.0 280 .50 2.7 1n6491us 5.6 45.0 5 600 1.0 0.5 2.0 255 .40 2.5 1n4460us 6.2 40.0 4 200 1.0 10.0 3.72 230 .35 2.3 1n4461us 6.8 37.0 2.5 200 1.0 5.0 4.08 210 .30 2.1
154 1n6485us thru 1n6491us and 1n4460us and 1n4461us figure 2 1.5 1.0 o.5 0 25 50 75 100 125 150 175 t a, ambient temperature (c) power derating curve pd. power dissipation (watts) .1 .2 .5 1 2 5 10 20 50 100 operating current i zt (ma) figure 3 zener impedance vs. operating current zener impedance z zt (ohms) 1000 500 400 300 200 100 50 40 30 20 10 5 4 3 2 1 5.1 volt 6.2 volt 3.3 volt
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