500 mw glass axial-lead zener diodes microsemi scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503 page 1 www. microsemi . com scottsdale division 1n5221 thru 1n5281b, e3 do-35 1n5221 ? 1n5281b,e3 do-35 description appearance the popular 1n5221 thru 1n5281b series of 0.5 watt zener voltage regulators provides a selection from 2.4 to 200 volts in standard 5% or 10% tolerances as well as tighter tolerances identified by different suffix letters on the part number. these glass axial-leaded do-35 zeners are also available in various military screening levels by adding a prefix i dentifier as described in the features section. microsemi also offers numero us other zener products to meet higher and lower power applications. important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? jedec registered 1n5221 to 1n5281b ? internal bonds optionally available with ?-1? suffix ? options for screening in accordance with mil-prf- 19500 for jan, jantx, jantxv, and jans are available by adding mq, mx, mv, or msp prefixes respectively to part num bers with ?-1? suffix. ? surface mount equivalents available as mll5221 to mll5281b in the do-213aa melf style package including ?-1? suffix options (consult factory for others) ? rohs compliant devices available by adding ?e3? suffix ? do-7 glass body axial-leaded zener equivalents are also available ? regulates voltage over a broad operating current and temperature range ? extensive selection from 2.4 to 200 v ? standard voltage tolerances are plus/minus 5% with b suffix, 10 % with a suffix id entification ? tight tolerances available in plus or minus 2% or 1% with c or d suffix respectively ? flexible axial-lead mounting terminals ? nonsensitive to esd (mil-std-750 method 1020) ? minimal capacitance (see figure 2) ? inherently radiation hard per micronote 050 maximum ratings mechanical and packaging ? power dissipation at 25 o c: 0.5 watts (also see derating in figure 1). ? operating and storage temperature: -65 o c to +175 o c ? thermal resistance: 250 o c/w junction to lead at 3/8 (10 mm) lead length from body, or 310 o c/w junction to ambient when mounted on fr4 pc board (1 oz cu) with 4 mm 2 copper pads and track width 1 mm, length 25 mm ? steady-state power: 0.5 watts at t l < 50 o c 3/8 inch (10 mm) from body or 0.48 w at t a < 25 o c when mounted on fr4 pc board as described for thermal resistance above (also see figure1) ? forward voltage @200 ma: 1.1 volts (maximum) ? solder temperatures: 260 o c for 10 s (max) ? case: hermetically seal ed axial-lead glass do- 35 (do-204ah) package ? finish: tin-lead or rohs compliant annealed matte-tin plating solderable per mil-std-750, method 2026 ? polarity: cathode indicated by band. diode to be operated with the banded end positive with respect to the opposite end for zener regulation ? marking: part number ? tape & reel option: standard per eia-296 (add ?tr? suffix to part number) ? weight: 0.2 grams see package dimensions on last page electrical characteristics @ 25 c max reverse current max zener impedance a & b suffix only note 2 a, b, c & d suffix only non-suffix i r @ v r a volts jedec type no. note 1 nominal zener voltage v z @ i zt volts test current i zt ma z zt @ i zk ohms z zk @ i zk = 0.25 ma ohms a b,c & d i r @ v r used for suffix a a max zener voltage temp. coeff. (a & b suffix only) vz (% / o c) note 3 1n5221 1n5222 1n5223 1n5224 1n5225 2.4 2.5 2.7 2.8 3.0 20 20 20 20 20 30 30 30 30 29 1200 1250 1300 1400 1600 100 100 75 75 50 0.95 0.95 0.95 0.95 0.95 1.0 1.0 1.0 1.0 1.0 200 200 150 150 100 -0.085 -0.085 -0.080 -0.080 -0.075 1n5226 1n5227 1n5228 1n5229 1n5230 3.3 3.6 3.9 4.3 4.7 20 20 20 20 20 28 24 23 22 19 1600 1700 1900 2000 1900 25 15 10 5.0 50 0.95 0.95 0.95 0.95 1.9 1.0 1.0 1.0 1.0 2.0 100 100 75 50 50 -0.070 -0.065 -0.060 +/-0.055 +/-0.030 do-35 (do-204ah ) copyright ? 2005 8-29-2005 rev c
500 mw glass axial-lead zener diodes www. microsemi . com scottsdale division 1n5221 thru 1n5281b, e3 do-35 1n5221 ? 1n5281b,e3 do-35 max reverse current max zener impedance a & b suffix only note 2 a, b, c & d suffix only non-suffix i r @ v r a volts jedec type no. note 1 nominal zener voltage v z @ i zt volts test current i zt ma z zt @ i zk ohms z zk @ i zk = 0.25 ma ohms a b,c & d i r @ v r used for suffix a a max zener voltage temp. coeff. (a & b suffix only) vz (% / o c) note 3 1n5231 1n5232 1n5233 1n5234 1n5235 5.1 5.6 6.0 6.2 6.8 20 20 20 20 20 17 11 7.0 7.0 5.0 1600 1600 1600 1000 750 5.0 5.0 5.0 5.0 3.0 1.9 2.9 3.3 3.8 4.8 2.0 3.0 3.5 4.0 5.0 50 50 50 50 30 +/-0.030 +0.038 +0.038 +0.045 +0.050 1n5236 1n5237 1n5238 1n5239 1n5240 7.5 8.2 8.7 9.1 10 20 20 20 20 20 6.0 8.0 8.0 10 17 500 500 600 600 600 3.0 3.0 3.0 3.0 3.0 5.7 6.2 6.2 6.7 7.6 6.0 6.5 6.5 7.0 8.0 30 30 30 30 30 +0.058 +0.062 +0.065 +0.068 +0.075 1n5241 1n5242 1n5243 1n5244 1n5245 11 12 13 14 15 20 20 9.5 9.0 8.5 22 30 13 15 16 600 600 600 600 600 2.0 1.0 0.5 0.1 0.1 8.0 8.7 9.4 9.5 10.5 8.4 9.1 9.9 10 11 30 10 10 10 10 +0.076 +0.077 +0.079 +0.082 +0.082 1n5246 1n5247 1n5248 1n5249 1n5250 16 17 18 19 20 7.8 7.4 7.0 6.6 6.2 17 19 21 23 25 600 600 600 600 600 0.1 0.1 0.1 0.1 0.1 11.4 12.4 13.3 13.3 14.3 12 13 14 14 15 10 10 10 10 10 +0.083 +0.084 +0.085 +0.086 +0.086 1n5251 1n5252 1n5253 1n5254 1n5255 22 24 25 27 28 5.6 5.2 5.0 4.6 4.5 29 33 35 41 44 600 600 600 600 600 0.1 0.1 0.1 0.1 0.1 16.2 17.1 18.1 20 20 17 18 19 21 21 10 10 10 10 10 +0.087 +0.088 +0.089 +0.090 +0.091 1n5256 1n5257 1n5258 1n5259 1n5260 30 33 36 39 43 4.2 3.8 3.4 3.2 3.0 49 58 70 80 93 600 700 700 800 900 0.1 0.1 0.1 0.1 0.1 22 24 26 29 31 23 25 27 30 33 10 10 10 10 10 +0.091 +0.092 +0.093 +0.094 +0.095 1n5261 1n5262 1n5263 1n5264 1n5265 47 51 56 60 62 2.7 2.5 2.2 2.1 2.0 105 125 150 170 185 1000 1100 1300 1400 1400 0.1 0.1 0.1 0.1 0.1 34 37 41 44 45 36 39 43 46 47 10 10 10 10 10 +0.095 +0.096 +0.096 +0.097 +0.097 1n5266 1n5267 1n5268 1n5269 1n5270 68 75 82 87 91 1.8 1.7 1.5 1.4 1.4 230 270 330 370 400 1600 1700 2000 2200 2300 0.1 0.1 0.1 0.1 0.1 49 53 59 65 66 52 56 62 68 69 10 10 10 10 10 +0.097 +0.098 +0.098 +0.099 +0.099 1n5271 1n5272 1n5273 1n5274 1n5275 100 110 120 130 140 1.3 1.1 1.0 0.95 0.90 500 750 900 1100 1300 2600 3000 4000 4500 4500 0.1 0.1 0.1 0.1 0.1 72 80 86 94 101 76 84 91 99 106 10 10 10 10 10 +0.110 +0.110 +0.110 +0.110 +0.110 1n5276 1n5277 1n5278 1n5279 1n5280 1n5281 150 160 170 180 190 200 0.85 0.80 0.74 0.68 0.66 0.65 1500 1700 1900 2200 2400 2500 5000 5500 5500 6000 6500 7000 0.1 0.1 0.1 0.1 0.1 0.1 108 116 123 130 137 144 114 122 129 137 144 152 10 10 10 10 10 10 +0.110 +0.110 +0.110 +0.110 +0.110 +0.110 *jedec registered data. jedec type numbers listed indicate a tolerance of +/-20% with guaranteed limits on only v z , i r , and v f . devices with guaranteed limits on all six parameters are indicated by suffix a for +/-10% tolerance and suffix b for +/-5% tolerance. also available with suffix c or d which indicates 2% and 1% tolerance respectively. notes: 1. the electrical characteristics are m easured after allowing the device to stabilize for 20 seconds when mounted with a 3/8? ( 10 mm) minimum lead length from the case. 2. the zener impedance is derived from the 60 hz ac voltage that results when an ac current having an rms value equal to 10% o f the dc zener current (i zt or i zk ) is superimposed on i zt or i zk . zener impedance is measured at two points to ensure a sharp knee on the breakdown curve, thereby eliminating unstable units. also see micronote 202 for variation in dynamic impedance with different operating current s. 3. temperature coefficient ( vz ). test conditions for temperat ure coefficient are as follows: a. i zt = 7.5 ma, t 1 = 25 o c, t 2 = 125 o c (1n5221a, b thru 1n5242a, b). b. i zt = rated i zt , t 1 = 25 o c, t 2 = 125 o c (1n5243a, b thru 1n5281a, b). (device to be temperature stabilized with current applied prior to reading break down voltage at the specified ambie nt temp.) microsemi scottsdale division page 2 copyright ? 2005 8-29-2005 rev c 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
500 mw glass axial-lead zener diodes www. microsemi . com scottsdale division 1n5221 thru 1n5281b, e3 do-35 1n5221 ? 1n5281b,e3 do-35 graphs microsemi scottsdale division page 3 copyright ? 2005 8-29-2005 rev c t l lead temperature at 3/8? from body or t a on fr4 pc board figure 1 power derating curve figure 2 capacitance vs. zener voltage (typical) pd, rated power dissipation (mw) package dimensions all dimensions in inch mm 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
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