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 6-20-07 rev b www. microsemi . com smaj4460 thru smaj4496, e3 and smaj6485 thru smaj6491, e3 1.5 watt zener diodes scottsdale division description this 1.5 watt zener series in a low-pr ofile light-weight plastic surface mount configuration, with stress-re lief j-bend contacts, meets or exceeds the electrical performance of the 1n4460 thru 1n4496 and 1n6485 thru 1n6491. it also provides double the overall surge performance by using a larger active die element. this includes esd protection per iec61000-4-2, eft protection per iec61000-4-4, and higher surge levels defined herein. the low- flat profile provides easier insertion or automatic handling compared to other melf style packages. its thermally efficient design lowers junction temperatures and extends operating temperature range before derating begins. power derates to zero at 150c for these plastic packages. important: for the most current data, consult microsemi ?s website: http://www.microsemi.com surface mount zener do-214ba or ac ( smaj ) features ? zener voltages: 3.3 volts to 200 volts ? metallurgically bonded ? reliability data per jesd22-a108, jesd22-a104, jesd22-a113-b, jesd22-a101-b, and jesd22-a102 ? thermally efficient surface mount with j-bends for stress relief (flat handling surface for easier placement) ? options for screening in accordance with mil-prf- 19500/406 for jan, jantx, and jantxv are available by adding mq, mx, or mv prefixes respectively to part numbers. for example, designate a mxsmaj4460 for a jantx screen. ? rohs compliant devices available by adding ?e3? suffix applications / benefits ? for high reliability voltage regulation in low profile surface mount locations requiring easy placement and strain relief ? light weight for airborne or satellite applications ? superior surge quality to protect from esd and eft transients per iec61000-4-2 and -4-4 and higher surge levels defined herein power derating ? outline ? mounting pad mechanical and packaging ? molded epoxy package meets ul94v-0 ? terminals: tin-lead or rohs compliant annealed matte-tin plated solderable per mil-std-750, method 2026 ? body marked with p/ n without smaj letters (ie. 4460, 4496, 6485, 4460, etc.) ? polarity is indicated by cathode band ? weight: 0.064 grams (approximate) ? tape & reel packaging per eia-481-2 with 12 mm tape and 250 0 u n i ts per reel (1 3 i nch r eel) maximum ratings ? operating temperatur e: -55c to +150c ? storage temperature: -55c to +150c ? 1.5 watt steady-state maximum power ? thermal resistance, r jl = 15 c/w ? solder temperatures: 260oc for 10 s (maximum) m ax i mum p ower di ss i pat i on (w atts ) dimensions millimeters inches dim min max min max 0.5 1.5 2.5 2.0 1.0 a .052 .103 1.32 2.62 b .160 .180 4.06 4.57 c .100 .110 2.54 2.79 d .194 .216 4.93 5.49 e .078 .115 1.98 2.92 f .030 .060 0.76 1.52 g -- .005 -- 0.13 smaj4460 ? smaj4496 & smaj6485 ? smaj6491 dimension a is within do-214ba but higher than standard jedec outlines..dimension b is wider than both jedec outlines for lower thermal resistance 175 20 0 125 150 75 100 50 25 figure 1. power derating curve outline t l , lead temperature (oc) 3/8? from body mounting pad
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 6-20-07 rev b www. microsemi . com smaj4460 thru smaj4496, e3 and smaj6485 thru smaj6491, e3 1.5 watt zener diodes scottsdale division electrical ch aracteristics @ 25 c ( unless otherwise specified) mmad1103 smaj4460 ? smaj4496 & 4460 ? smaj4496 & smaj6485 ? smaj6491 smaj6485 ? smaj6491 microsemi part number zener test dynamic impedance z zt = i zt voltage v z @ i zt volts nom. current i zt ma ohms max knee impedance z zk = i zk ohms max test reverse current i zk ma current i r @ v r a max test maximum maximum voltage continous surge current at 8.3 ms square wave v r current volts ma t a = 25 c a maximum surge current at 8.3 ms square wave t a = 100 c a smaj6485 3.3 76.0 10 400 1.0 50 1.0 433 - 8.4 smaj6486 3.6 69.0 10 400 1.0 50 1.0 397 - 7.8 smaj6487 3.9 64.0 9 400 1.0 35 1.0 366 - 7.2 smaj6488 4.3 58.0 9 400 1.0 5 1.0 332 - 6.6 smaj6489 4.7 53.0 8 500 1.0 4 1.0 304 - 6.0 smaj6490 5.1 49.0 7 500 1.0 1 1.0 280 - 5.4 smaj6491 5.6 45.0 5 600 1.0 .50 2.0 255 - 5 smaj4460 6.2 40.0 4 200 1.0 10 3.72 230 - 4.6 smaj4461 6.8 37.0 2.5 200 1.0 5 4.08 210 10 4.2 smaj4462 7.5 34.0 2.5 400 0.5 1 4.50 191 9 3.8 smaj4463 8.2 31.0 3 400 0.5 .50 4.92 174 7.8 3.4 smaj4464 9.1 28.0 4 500 0.5 .30 5.46 157 6.8 3.2 smaj4465 10 25.0 5 500 .25 .30 8.0 143 6 2.8 smaj4466 11 23.0 6 550 .25 .30 8.8 130 5.2 2.6 smaj4467 12 21.0 7 550 .25 .20 9.6 119 4.8 2.4 smaj4468 13 19.0 8 550 .25 .05 10.4 110 4.4 2.2 smaj4469 15 17.0 9 600 .25 .05 12.0 95 3.6 1.9 smaj4470 16 15.5 10 600 .25 .05 12.8 90 3.2 1.6 smaj4471 18 14.0 11 650 .25 .05 14.4 79 2.8 1.58 smaj4472 20 12.5 12 650 .25 .05 16.0 71 2.4 1.42 smaj4473 22 11.5 14 650 .25 .05 17.6 65 2.2 1.3 smaj4474 24 10.5 16 700 .25 .05 19.2 60 1.8 1.2 smaj4475 27 9.5 18 700 .25 .05 21.6 53 1.6 1.06 smaj4476 30 8.5 20 750 .25 .05 24.0 48 1.5 .96 smaj4477 33 7.5 25 800 .25 .05 26.4 43 1.32 .86 smaj4478 36 7.0 27 850 .25 .05 28.8 40 1.20 .80 smaj4479 39 6.5 30 900 .25 .05 31.2 37 1.08 .74 smaj4480 43 6.0 40 950 .25 .05 34.4 33 .96 .66 smaj4481 47 5.5 50 1000 .25 .05 37.6 30 .90 .60 smaj4482 51 5.0 60 1100 .25 .05 40.8 28 .84 .56 smaj4483 56 4.5 70 1300 .25 .025 44.8 26 .78 .52 smaj4484 62 4.0 80 1500 .25 .025 49.6 23 .70 .46 smaj4485 68 3.7 100 1700 .25 .025 54.4 21 .64 .42 smaj4486 75 3.3 130 2000 .25 .025 60.4 19 .58 .38 smaj4487 82 3.0 160 2500 .25 .025 65.6 17 .52 .34 smaj4488 91 2.8 200 3000 .25 .025 72.8 16 .46 .32 smaj4489 100 2.5 250 3100 .25 .025 80.0 14 .40 .28 smaj4490 110 2.0 300 4000 .25 .025 88.0 13 .38 .26 smaj4491 120 2.0 400 4500 .25 .025 96.0 12 .36 .24 smaj4492 130 1.9 500 5000 .25 .025 104 11 .32 .22 smaj4493 150 1.7 700 6000 .25 .025 120 9.5 .28 .19 smaj4494 160 1.6 1000 6500 .25 .025 128 8.9 .24 .178 smaj4495 180 1.4 1300 7000 .25 .025 144 7.9 .20 .158 smaj4496 200 1.2 1500 8000 .25 .025 160 7.2 .16 .144 notes: 1. no suffix indicates a 5% tolerance on nominal v z , c denotes a 2% tolerance, and d denotes a 1% tolerance. 2. zener voltage (v z ) is measured at t l = 30 c. voltage measurement to be performed 90 seconds after application of dc current. 3. the zener impedance is derived from the 60 hz ac voltage which results when an ac current having an rms value equal to 10% of t he dc zener current (i zt or i zk ). 4. v f at 200 ma 1.2 volts maximum and v f at 1.0 a 1.5 volts maximum.
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