voidless-hermetically-sealed surface mount 1.5 watt glass 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 copyright ? 2007 4-27-2007 rev d www. microsemi . com scottsdale division 1n4460us thru 1n4496us 1n6485us thru 1n6491us 1n4460us thru 1n4496us 1n6485us thru 1n6491us description appearance t his surface mount zener voltage regulato r series is military qualified to mil- prf-19500/406 and is ideal for high-reliability ap plications where a failure cannot be tolerated. these indust ry-recognized 1.5 watt zener voltage regulators are hermetically sealed with voidless-glass construction using an internal metallurgical bond. it includes zener selections from 3.3 to 200 volts in standard 5% tolerances as well as tighter tolerances identified by different suffix letters on the part number. they are also available in axial-leaded packages (see separate data sheet for 1n4460 thru 1n4496 and 1n6485 thru 1n6491). microsemi also offers numerous other zener products to meet higher and lower power ratings in both thru-hole and surface mount packages. important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? popular jedec registered series ? voidless hermetically sealed glass package ? triple-layer passivation ? internal ? category i? metallurgical bonds for 1n4462us thru 1n4496us and ? category iii? for 1n6485us thru 1n6491us as well as 1n4460us and 1n4461us ? jan, jantx, jantxv, and jans available per mil- prf-19500/406 ? axial-leaded equivalents also available (see separate data sheet for 1n4460 thru 1n4496 and 1n6485 thru 1n6491) ? regulates voltage over a broad operating current and temperature range ? extensive selection from 3.3 to 200 v ? standard voltage tolerances are plus/minus 5% with no suffix ? tight tolerances available in plus or minus 2% or 1% with c or d suffix respectively ? extremely robust construction ? nonsensitive to esd per mil-std-750 method 1020 ? inherently radiation hard as described in microsemi micronote 050 maximum ratings mechanical and packaging ? operating temperature: -65 o c to +175 o c. ? storage temperature: -65 o c to +200 o c. ? power dissipation: 1.5 watts @ t ec = 145 o c ? thermal resistance: 20 o c/w junction to end cap ? thermal impedance at 10 ms: 4.5 o c/w (1n4462us thru 1n4496us) and 7.5 o c/w (1n6485us thru 1n6491us as well as 1n4460us and 1n4461us) ? forward voltage: 1.00 v at 200 ma and 1.5 v at 1.0 a ? case: hermetically sealed voidless hard glass with tungsten slugs ? terminations: end caps are copper with tin/lead (sn/pb) finish. note: previous inventory had solid silver end caps with tin/lead (sn/pb) finish. ? marking: polarity band only ? polarity: cathode indicated by band ? tape & reel option: standard per eia-481-b ? weight: 193 mg electrical characteristics @ 25 o c nominal zener voltage v z test current i zt maximum dynamic impedance z zt @ i zt maximum knee impedance z zk @ i zk maximum reverse current i r @ v r maximum continuous current i zm maximum surge current i zsm type volts ma ohms ohms ma a volts ma amps 1n6485us 1n6486us 1n6487us 1n6488us 1n6489us 1n6490us 1n6491us 3.3 3.6 3.9 4.3 4.7 5.1 5.6 76.0 69.0 64.0 58.0 53.0 49.0 45.0 10 10 9 9 8 7 5 400 400 400 400 500 500 600 1.0 1.0 1.0 1.0 1.0 1.0 1.0 50 50 35 5.0 4.0 1.0 0.5 1.0 1.0 1.0 1.0 1.0 1.0 2.0 433 397 366 332 304 280 255 4.2 3.9 3.6 3.3 3.0 2.7 2.5 ?a? package (or ?d-5a?)
voidless-hermetically-sealed surface mount 1.5 watt glass zener diodes microsemi scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503 page 2 copyright ? 2007 4-27-2007 rev d www. microsemi . com scottsdale division 1n4460us thru 1n4496us 1n6485us thru 1n6491us 1n4460us thru 1n4496us 1n6485us thru 1n6491us nominal zener voltage v z test current i zt maximum dynamic impedance z zt @ i zt maximum knee impedance z zk @ i zk maximum reverse current i r @ v r maximum continuous current i zm maximum surge current i zsm t a = 25 o c type volts ma ohms ohms ma a volts ma amps 1n4460us 1n4461us 1n4462us 1n4463us 6.2 6.8 7.5 8.2 40.0 37.0 34.0 31.0 4 2.5 2.5 3 200 200 400 400 1.0 1.0 .5 .5 10.0 5.0 1.0 .50 3.72 4.08 4.50 4.92 230 210 191 174 2.3 2.1 1.9 1.7 1n4464us 1n4465us 1n4466us 1n4467us 9.1 10.0 11.0 12.0 28.0 25.0 23.0 21.0 4 5 6 7 500 500 550 550 .5 .25 .25 .25 .30 .30 .30 .20 5.46 8.00 8.80 9.60 157 143 130 119 1.6 1.4 1.3 1.2 1n4468us 1n4469us 1n4470us 1n4471us 13.0 15.0 16.0 18.0 19.0 17.0 15.5 14.0 8 9 10 11 550 600 600 650 .25 .25 .25 .25 .05 .05 .05 .05 10.40 12.00 12.80 14.40 110 95 90 79 1.1 .95 .90 .79 1n4472us 1n4473us 1n4474us 1n4475us 20.0 22.0 24.0 27.0 12.5 11.5 10.5 9.5 12 14 16 18 650 650 700 700 .25 .25 .25 .25 .05 .05 .05 .05 16.00 17.60 19.20 21.60 71 65 60 53 .71 .65 .60 .53 1n4476us 1n4477us 1n4478us 1n4479us 30.0 33.0 36.0 39.0 8.5 7.5 7.0 6.5 20 25 27 30 750 800 850 900 .25 .25 .25 .25 .05 .05 .05 .05 24.00 26.40 28.80 31.2 48 43 40 37 .48 .43 .40 .37 1n4480us 1n4481us 1n4482us 1n4483us 43.0 47.0 51.0 56.0 6.0 5.5 5.0 4.5 40 50 60 70 950 1000 1100 1300 .25 .25 .25 .25 .05 .05 .05 .25 34.4 37.6 40.8 44.8 33 30 28 26 .33 .30 .28 .26 1n4484us 1n4485us 1n4486us 1n4487us 62.0 68.0 75.0 82.0 4.0 3.7 3.3 3.0 80 100 130 160 1500 1700 2000 2500 .25 .25 .25 .25 .25 .25 .25 .25 49.6 54.4 60.4 65.6 23 21 19 17 .23 .21 .19 .17 1n4488us 1n4489us 1n4490us 1n4491us 91.0 100.0 110.0 120.0 2.8 2.5 2.0 2.0 200 250 300 400 3000 3100 4000 4500 .25 .25 .25 .25 .25 .25 .25 .25 72.8 80.0 88.0 96.0 16 14 13 12 .16 .14 .13 .12 1n4492us 1n4493us 1n4494us 1n4495us 130.0 150.0 160.0 180.0 1.9 1.7 1.6 1.4 500 700 1000 1300 5000 6000 6500 7000 .25 .25 .25 .25 .25 .25 .25 .25 104.0 120.0 128.0 144.0 11 9.5 8.9 7.9 .11 .095 .089 .079 1n4496us 200.0 1.2 1500 8000 .25 .25 160.0 7.2 .072 symbols & definitions symbol definition v z zener voltage: the zener voltage the devi ce will exhibit at a specified current (i z ) in its breakdown region. i z , i zt , i zk regulator current: the dc regulator current (i z ), at a specified test point (i zt ), near breakdown knee (i zk ). z zt or z zk dynamic impedance: the small signal impedance of t he diode when biased to operate in its breakdown region at a specified rms current m odulation (typically 10% of i zt or i zk ) and superimposed on i zt or i zk respectively. v f maximum forward voltage: the maximum forward volt age the device will exhibit at a specified current. i r maximum reverse current: the maximum reverse (leakage) current that will flow at the specified voltage and temperature. i zm maximum regulator (zener) current: the maximum rated dc current for the specified power rating. i zsm maximum zener surge current: the nonrepetitive peak va lue of zener surge current at a specified wave form.
voidless-hermetically-sealed surface mount 1.5 watt glass zener diodes microsemi scottsdale division 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503 page 3 copyright ? 2007 4-27-2007 rev d www. microsemi . com scottsdale division 1n4460us thru 1n4496us 1n6485us thru 1n6491us 1n4460us thru 1n4496us 1n6485us thru 1n6491us graphs figure 1 figure 2 typical temperature power temperature derating curve coefficient characteristics package dimensions and pad layout this package outline has also previously been identified as ?d-5a? note: if mounting requires adhesive separate from the solder, an additional 0.060 inch diameter contact may be plac ed in the center between the pads as an optional spot for cement in the pad layout as shown.
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