zmm5221b thru zmm5267b willas electronic corp. 500mw mini melf zener diodes features plannar die constuction 500mw power dissipation ideally suited for automated assembly processes v z tolerance 5% weight 0.03g applications voltage stabilization maximum ratings t j = 25 c item test conditions type symbol value unit power dissipation t amb =25 c p tot 500 mw zcurrent i z p v /v z ma junction temperature t j -65 to +175 c storage temperature range t stg 65 to +175 c maximum thermal resistance t j = 25 c parameter test conditions symbol value unit junction ambient l=9.5mm (3/8o), t l =constant r thja 300 k/w electrical characteristics t j = 25 c parameter test conditions type symbol min typ max unit forward voltage i f =200ma v f 1.1 v mini-melf/ll-34 unit:inch(mm) .020(0.5) .063(1.6) .055(1.4)dia. .020(0.5) .012(0.3) .012(0.3) .130(3.3) .146(3.7)
nom. v min. v max. v ? ma ? ma av %k zmm5221b 2.4 2.28 2.52 30 20.0 1200 0.25 100 1.0 < ?0.085 5221 zmm5222b 2.5 2.38 2.63 30 20.0 1250 0.25 100 1.0 < ?0.085 5222 zmm5223b 2.7 2.57 2.84 30 20.0 1300 0.25 75 1.0 < ?0.080 5223 zmm5224b 2.8 2.66 2.94 30 20.0 1400 0.25 75 1.0 < ?0.080 5224 zmm5225b 3.0 2.85 3.15 29 20.0 1600 0.25 50 1.0 < ?0.075 5225 zmm5226b 3.3 3.14 3.47 28 20.0 1600 0.25 25 1.0 < ?0.070 5226 zmm5227b 3.6 3.42 3.78 24 20.0 1700 0.25 15 1.0 < ?0.065 5227 zmm5228b 3.9 3.71 4.10 23 20.0 1900 0.25 10 1.0 < ?0.060 5228 zmm5229b 4.3 4.09 4.52 22 20.0 2000 0.25 5.0 1.0 < +0.055 5229 ZMM5230B 4.7 4.47 4.94 19 20.0 1900 0.25 5.0 2.0 < +0.030 5230 zmm5231b 5.1 4.85 5.36 17 20.0 1600 0.25 5.0 2.0 < +0.030 5231 zmm5232b 5.6 5.32 5.88 11 20.0 1600 0.25 5.0 3.0 < +0.038 5232 zmm5233b 6.0 5.70 6.30 7 20.0 1600 0.25 5.0 3.5 < +0.038 5233 zmm5234b 6.2 5.89 6.51 7 20.0 1000 0.25 5.0 4.0 < +0.045 5234 zmm5235b 6.8 6.46 7.14 5 20.0 750 0.25 3.0 5.0 < +0.050 5235 zmm5236b 7.5 7.13 7.88 6 20.0 500 0.25 3.0 6.0 < +0.058 5236 zmm5237b 8.2 7.79 8.61 8 20.0 500 0.25 3.0 6.5 < +0.062 5237 zmm5238b 8.7 8.27 9.14 8 20.0 600 0.25 3.0 6.5 < +0.065 5238 zmm5239b 9.1 8.65 9.56 10 20.0 600 0.25 3.0 7.0 < +0.068 5239 zmm5240b 10.0 9.50 10.50 17 20.0 600 0.25 3.0 8.0 < +0.075 5240 zmm5241b 11.0 10.45 11.55 22 20.0 600 0.25 2.0 8.4 < +0.076 5241 zmm5242b 12.0 11.40 12.60 30 20.0 600 0.25 1.0 9.1 < +0.077 5242 zmm5243b 13.0 12.35 13.65 13 9.5 600 0.25 0.5 9.9 < +0.079 5243 zmm5244b 14.0 13.30 14.70 15 9.0 600 0.25 0.1 10.0 < +0.082 5244 zmm5245b 15.0 14.25 15.75 16 8.5 600 0.25 0.1 11.0 < +0.082 5245 zmm5246b 16.0 15.20 16.80 17 7.8 600 0.25 0.1 12.0 < +0.083 5246 zmm5247b 17.0 16.15 17.85 19 7.4 600 0.25 0.1 13.0 < +0.084 5247 zmm5248b 18.0 17.10 18.90 21 7.0 600 0.25 0.1 14.0 < +0.085 5248 zmm5249b 19.0 18.05 19.95 23 6.6 600 0.25 0.1 14.0 < +0.086 5249 zmm5250b 20.0 19.00 21.00 25 6.2 600 0.25 0.1 15.0 < +0.086 5250 zmm5251b 22.0 20.90 23.10 29 5.6 600 0.25 0.1 17.0 < +0.087 5251 zmm5252b 24.0 22.80 25.20 33 5.2 600 0.25 0.1 18.0 < +0.088 5252 zmm5253b 25.0 23.75 26.25 35 5.0 600 0.25 0.1 19.0 < +0.089 5253 zmm5254b 27.0 25.65 28.35 41 4.6 600 0.25 0.1 21.0 < +0.090 5254 zmm5255b 28.0 26.60 29.40 44 4.5 600 0.25 0.1 21.0 < +0.091 5255 zmm5256b 30.0 28.50 31.50 49 4.2 600 0.25 0.1 23.0 < +0.091 5256 zmm5257b 33.0 31.35 34.65 58 3.8 700 0.25 0.1 25.0 < +0.092 5257 zmm5258b 36.0 34.20 37.80 70 3.4 700 0.25 0.1 27.0 < +0.093 5258 zmm5259b 39.0 37.05 40.95 80 3.2 800 0.25 0.1 30.0 < +0.094 5259 zmm5260b 43.0 40.85 45.15 93 3.0 900 0.25 0.1 33.0 < +0.095 5260 zmm5261b 47.0 44.65 49.35 150 2.7 1000 0.25 0.1 36.0 < +0.095 5261 zmm5262b 51.0 48.45 53.55 125 2.5 1100 0.25 0.1 39.0 < +0.096 5262 zmm5263b 56.0 53.20 58.80 150 2.2 1300 0.25 0.1 43.0 < +0.096 5263 zmm5264b 60.0 57.00 63.00 170 2.1 1400 0.25 0.1 46.0 < +0.097 5264 zmm5265b 62.0 58.90 65.10 185 2.0 1400 0.25 0.1 47.0 < +0.097 5265 zmm5266b 68.0 64.60 71.40 230 1.8 1600 0.25 0.1 52.0 < +0.097 5266 zmm5267b 75.0 71.25 78.75 270 1.7 1700 0.25 0.1 56.0 < +0.098 5267 1) based on dc?measurement at thermal equilibrium; lead length = 9.5mm (3/8?); thermal resistance of heat sink = 30k/w marking code v z @ i zt z zt @ i zt z zk @ i zk i r @ v r tk vz part no. nominal zener voltage max. zener impedance max reverse leakage current zmm5221b thru zmm 5267b
vz (v) 2.7 3.9 4.3 4.7 5.1 5.6 6.2 6.8 9.1 11 12 15 20 24 5 10 15 20 25 0 iz (ma) 10 20 30 40 50 30 fig. 1 power derating curve 50 0 100 200 300 400 500 100 150 200 250 ambient temperature, c o power dissipation, mwatts fig.2 breakdown characteristics test current iz=20ma rating and characteristic curves
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