22 corey street, melrose, massachusetts 02176 phone (781) 665-1071 fax (781) 665-7379 website: http://www.cdi-diodes.com e-mail: mail@cdi-diodes.com figure 1 design data case: hermetically sealed glass case, do41. lead material: copper clad steel lead finish: tin / lead thermal resistance: ( r o jec ): 80 ?c/w maximum at l = .375 inch thermal impedance: ( z o jx ): 15 ?c/w maximum polarity: diode to be operated with the banded (cathode) end positive. mounting position: any. electrical characteristics @ 25c cdi nominal zener max. dc type zener test maximum zener impedance zener max. reverse number voltage current current leakage current v z @1 zt 1 zt z zt @ 1 zt z zk @ 1 zk=1ma 1 zm l r @ v r (note 1) (note 3) (note 2) volts ma ohms ohms ma a volts 1N3821 3.3 76 10 400 276 100 1 1N3821a 3.3 76 10 400 276 100 1 1n3822 3.6 69 10 400 252 75 1 1n3822a 3.6 69 10 400 252 75 1 1n3823 3.9 64 9 400 238 25 1 1n3823a 3.9 64 9 400 238 25 1 1n3824 4.3 58 9 400 213 5 1 1n3824a 4.3 58 9 400 213 5 1 1n3825 4.7 53 8 500 194 5 1 1n3825a 4.7 53 8 500 194 5 1 1n3826 5.1 49 7 550 178 3 1 1n3826a 5.1 49 7 550 178 3 1 1n3827 5.6 45 5 600 162 3 2 1n3827a 5.6 45 5 600 162 3 2 1n3828 6.2 41 2 700 146 3 3 1n3828a 6.2 41 2 700 146 3 3 maximum ratings operating temperature: -65c to +175c storage temperature: -65c to +175c dc power dissipation: 1 watt @t l = 95c power derating: 12.5 mw / c above t l = 95c forward voltage @ 200ma = 1.2 volts maximum note 1 no suffix = + 10% tolerance on nominal zener voltage, suffix a signifies + 5%, suffix c signifies + 2%, suffix d signifies + 1%. note 2 zener impedance is derived by superimposing on 1 zt a 60hz rms a.c. current equal to 10% of 1 zt. note 3 zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25c + 3c. ? 1N3821a-1 thru 1n3828a-1 available in jan, jantx and jantxv per mil-prf-19500/115 ? 1 watt zener diode ? double plug construction ? metallurgically bonded 1N3821a thru 1n3828a and 1N3821a-1 thru 1n3828a-1 www.datasheet.co.kr datasheet pdf - http://www..net/
1N3821a thru 1n3828a and 1N3821a-1 thru 1n3828a-1 1000 100 10 1 z zt , zener impedance (ohms) .1 1.0 10 100 operating current l zt (ma) figure 3 zener impedance vs. operating current 0 25 50 75 100 125 150 175 t l , lead temperature (c) , 3/8 from body power derating curve 1000 800 600 400 200 0 pd, rated power dissipation (mw) figure 2 1n3829a 1n3822a 1n3826a www.datasheet.co.kr datasheet pdf - http://www..net/
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