6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (978) 689-0803 website: http://www.microsemi.com 143 figure 1 design data case: do-213aa , hermetically sealed glass case. (melf, sod-80, ll34) lead finish: tin / lead thermal resistance: ( r o jec ): 100 c/w maximum at l = 0 inch thermal impedance: ( z o jx ): 35 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 +6ppm/c. the coe of the mounting surface system should be selected to provide a suitable match with this device. maximum ratings junction and storage temperature: -65c to +125c dc power dissipation: 500 mw @ t ec = +125c power derating: 10 mw / c above t ec = +125c forward voltage @ 200ma: 1.1 volts maximum electrical characteristics @ 25c , unless otherwise specified. b-c-d suffix cdi nominal zener max. zener maximum reverse maximum regulation low type zener test impedance leakage current dc zener factor v z number voltage current b-c-d suffix current current v z @ 1 zt 1 zt z zt @ 1 zt l r v r = volts 1 zm ? v z 1 zl (note 1) (note 2) (note 3) (note 4) (note 5) non & a- b-c-d- volts ma ohms adc suffix suffix ma volts ma cdll5518b 3.3 20 26 5.0 0.90 1.0 115 0.90 2.0 cdll5519b 3.6 20 24 3.0 0.90 1.0 105 0.90 2.0 cdll5520b 3.9 20 22 1.0 0.90 1.0 98 0.85 2.0 cdll5521b 4.3 20 18 3.0 1.0 1.5 88 0.75 2.0 cdll5522b 4.7 10 22 2.0 1.5 2.0 81 0.60 1.0 cdll5523b 5.1 5.0 26 2.0 2.0 2.5 75 0.65 0.25 cdll5524b 5.6 3.0 30 2.0 3.0 3.5 68 0.30 0.25 cdll5525b 6.2 1.0 30 1.0 4.5 5.0 61 0.20 0.01 cdll5526b 6.8 1.0 30 1.0 5.5 6.2 56 0.10 0.01 cdll5527b 7.5 1.0 35 0.5 6.0 6.8 51 0.05 0.01 cdll5528b 8.2 1.0 40 0.5 6.5 7.5 46 0.05 0.01 cdll5529b 9.1 1.0 45 0.1 7.0 8.2 42 0.05 0.01 cdll5530b 10.0 1.0 60 0.05 8.0 9.1 38 0.10 0.01 cdll5531b 11.0 1.0 80 0.05 9.0 9.9 35 0.20 0.01 cdll5532b 12.0 1.0 90 0.05 9.5 10.8 32 0.20 0.01 cdll5533b 13.0 1.0 90 0.01 10.5 11.7 29 0.20 0.01 cdll5534b 14.0 1.0 100 0.01 11.5 12.6 27 0.20 0.01 cdll5535b 15.0 1.0 100 0.01 12.5 13.5 25 0.20 0.01 cdll5536b 16.0 1.0 100 0.01 13.0 14.4 24 0.20 0.01 cdll5537b 17.0 1.0 100 0.01 14.0 15.3 22 0.20 0.01 cdll5538b 18.0 1.0 100 0.01 15.0 16.2 21 0.20 0.01 cdll5539b 19.0 1.0 100 0.01 16.0 17.1 20 0.20 0.01 cdll5540b 20.0 1.0 100 0.01 17.0 18.0 19 0.20 0.01 cdll5541b 22.0 1.0 100 0.01 18.0 19.8 17 0.25 0.01 cdll5542b 24.0 1.0 100 0.01 20.0 21.6 16 0.30 0.01 cdll5543b 25.0 1.0 100 0.01 21.0 22.4 15 0.35 0.01 cdll5544b 28.0 1.0 100 0.01 23.0 25.2 14 0.40 0.01 cdll5545b 30.0 1.0 100 0.01 24.0 27.0 13 0.45 0.01 cdll5546b 33.0 1.0 100 0.01 28.0 29.7 12 0.50 0.01 note 1 no suffix type numbers are + 20% with guaranteed limits for only v z , l r , and v f . units with ?a? suffix are + 10% with guaranteed limits for v z , l r , and v f . units with guaranteed limits for all six parameters are indicated by a ?b? suffix for + 5.0% units, ?c? suffix for+ 2.0% and ?d? suffix for + 1.0%. 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% of1 zt. note 4 reverse leakage currents are measured at v r as shown on the table. note 5 ? v z is the maximum difference between v z at l zt and v z at l zl measured with the device junction in thermal equilibrium. ? 1n5518bur-1 thru 1n5546bur-1 available in jan, jantx and jantxv per mil-prf-19500/437 ? zener diode, 500mw ? leadless package for surface mount ? low reverse leakage characteristics ? metallurgically bonded 1n5518bur-1 thru 1n5546bur-1 and cdll5518 thru cdll5546d millimeters inches dim min max min max d 1.60 1.70 0.063 0.067 f 0.41 0.55 0.016 0.022 g 3.30 3.70 .130 .146 g1 2.54 ref. .100 ref. s 0.03 min. .001 min.
144 cdll5518 thru cdll5546d .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 28 volt 6.8 volt 11 volt 0 25 50 75 100 125 150 175 t ec , end cap temperature (c) power derating curve 500 400 300 200 100 0 pd, rated power dissipation (mw) figure 2
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