silicon 2.0 watt zener diodes www. microsemi . com scottsdale division smbg4728 thru smbg4764a, e3 smbj4728 thru smbj4764a, e3 smbg(j)4728?4764a, e3 description appearance the smbj4728a-4764a and smbg4728a-4764a series of surface mount 2.0 watt zeners provides voltage regulation in a selection from 3.3 to 100 volts with different tolerances as identified by suffix letter on the part number as well as rohs compliant with an e3 suffix. this surface mount product series with lower thermal resistance features is equivalent to the jedec registered 1n4728 thru 1n4764a with identical electrical characteristics except it is rated at 2.0 w instead of 1.0 w. it is available in j-bend design (smbj) with the do-214aa package for greater pc board mounting density or in gull-wi ng design (smbg) in the do-215aa for visible solder connections. microsemi also offers numerous other zener products to meet higher and lower power applications. note: all smb series are equivalent to prior sms packag e identifications. important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? surface mount equivalent to 1n4728 to 1n4764a ? ideal for high-density and low-profile mounting ? zener voltage available 3.3v to 200v ? standard voltage tolerances are plus/minus 5% with a suffix and 10 % with no suffix identification ? tight tolerances available in plus or minus 2% or 1% with c or d suffix respectively ? options for screening in accordance with mil-prf- 19500 for jan, jantx, and jantxv are available by adding mq, mx, or mv prefixes respectively to part numbers. ? rohs compliant devices available by adding an e3 suffix. ? regulates voltage over a broad operating current and temperature range ? wide selection from 3.3 to 100 v ? popular do-214aa or do-215aa packages and footprints for either high density j-bend or gull-wing designs for visible solder joints ? nonsensitive to esd per mil-std-750 method 1020 ? moisture classification: level 1 per ipc/jedec j- std-020b with no dry pack required maximum ratings mechanical and packaging ? power dissipation at 25 o c: 2.0 watts (also see derating in figure 1). ? operating and storage temperature: -65 o c to +150 o c ? thermal resistance: 35 o c/w junction to lead, or 100 o c/w junction to ambient when mounted on fr4 pc board (1oz cu) with recommended footprint (see last page) ? steady-state power: 2 watts at t l < 80 o c, or 1.25 watts at t a = 25 o c when mounted on fr4 pc board with recommended footprint (also see figure 1) ? forward voltage @200 ma: 1.2 volts (maximum) ? solder temperatures: 260 o c for 10 s (maximum) ? case: void-free transfer molded thermosetting epoxy body meeting ul94v-0 ? terminals: gull-wing or c-bend (modified j- bend) leads, tin-lead plated 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 opposite end for zener regulation ? marking: includes part number without prefix (e.g. 4728a, 4728ae3, 4734c, 4764d, etc.) ? tape & reel option: standard per eia-481-1-a with 12 mm tape, 750 per 7 inch reel or 2500 per 13 inch reel (add ?tr? su ffix to part number) ? weight: 0.1 grams ? see package dimensions on last page microsemi scottsdale division page 1 copyright ? 2007 6-20-2007 rev e 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
silicon 2.0 watt zener diodes www. microsemi . com scottsdale division smbg4728 thru smbg4764a, e3 smbj4728 thru smbj4764a, e3 smbg(j)4728?4764a, e3 electrical characteristics* jedec type number (note 1) zener voltage (vz) (note 4) test current (i zt ) maximum dynamic impedance (z zt @ i zt ) (note 2) maximum reverse current (i r @ v r ) test voltage (v r ) maximum regulator current (i zm ) ta = 50 o c maximum knee impedance (z zk @ i zk ) (note 2) test current (i zk ) maximum (surge) current (i s ) (note 3) gull-wing lead c-bend (mod. ?j?) volts ma ohms a volts ma ohms ma ma smbg4728a smbg4729a smbg4730a smbg4731a smbj4728a smbj4729a smbj4730a smbj4731a 3.3 3.6 3.9 4.3 76 69 64 58 10 10 9 9 100 100 50 10 1 1 1 1 276 252 234 217 400 400 400 400 1.0 1.0 1.0 1.0 1380 1260 1190 1070 smbg4732a smbg4733a smbg4734a smbg4735a smbj4732a smbj4733a smbj4734a smbj4735a 4.7 5.1 5.6 6.2 53 49 45 41 8 7 5 2 10 10 10 10 1 1 2 3 193 178 162 146 500 550 600 700 1.0 1.0 1.0 1.0 970 890 810 730 smbg4736a smbg4737a smbg4738a smbg4739a smbj4736a smbj4737a smbj4738a smbj4739a 6.8 7.5 8.2 9.1 37 34 31 28 3.5 4.0 4.5 5.0 10 10 10 10 4 5 6 7 133 121 110 100 700 700 700 700 1.0 0.5 0.5 0.5 660 605 550 500 smbg4740a smbg4741a smbg4742a smbg4743a smbj4740a smbj4741a smbj4742a smbj4743a 10 11 12 13 25 23 21 19 7 8 9 10 10 5 5 5 7.6 8.4 9.1 9.9 91 83 76 69 700 700 700 700 0.25 0.25 0.25 0.25 454 414 380 344 smbg4744a smbg4745a smbg4746a smbg4747a smbj4744a smbj4745a smbj4746a smbj4747a 15 16 18 20 17 15.5 14 12.5 14 16 20 22 5 5 5 5 11.4 12.2 13.7 15.2 61 57 50 45 700 700 750 750 0.25 0.25 0.25 0.25 304 285 250 225 smbg4748a smbg4749a smbg4750a smbg4751a smbj4748a smbj4749a smbj4750a smbj4751a 22 24 27 30 11.5 10.5 9.5 8.5 23 25 35 40 5 5 5 5 16.7 18.2 20.6 22.8 41 38 34 30 750 750 750 1000 0.25 0.25 0.25 0.25 205 190 170 150 smbg4752a smbg4753a smbg4754a smbg4755a smbj4752a smbj4753a smbj4754a smbj4755a 33 36 39 43 7.5 7.0 6.5 6.0 45 50 60 70 5 5 5 5 25.1 27.4 29.7 32.7 27 25 23 22 1000 1000 1000 1500 0.25 0.25 0.25 0.25 135 125 115 110 smbg4756a smbg4757a smbg4758a smbg4759a smbj4756a smbj4757a smbj4758a smbj4759a 47 51 56 62 5.5 5.0 4.5 4.0 80 95 110 125 5 5 5 5 35.8 38.8 42.6 47.1 19 18 16 14 1500 1500 2000 2000 0.25 0.25 0.25 0.25 95 90 80 70 smbg4760a smbg4761a smbg4762a smbg4763a smbj4760a smbj4761a smbj4762a smbj4763a 68 75 82 91 3.7 3.3 3.0 2.8 150 175 200 250 5 5 5 5 51.7 56.0 62.2 69.2 13 12 11 10 2000 2000 3000 3000 0.25 0.25 0.25 0.25 65 60 55 50 smbg4764a smbj4764a 100 2.5 350 5 76.0 9 3000 0.25 45 *jedec registered data notes: 1. the jedec type numbers shown with an a suffix have a 5% tole rance on nominal zener voltage. no suffix signifies a 10% toler ance, c signifies 2%, and d signifies 1% tolerance. also add a p suffix for designati ng plastic construction (or g suffix for glass body). add an e3 suffix for rohs compliant devices. 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% of the dc zener current (i zt or i zk ) is superimposed on i zt or i zk . zener impedance is measured at tw o points to ensure a sharp knee on the breakdown curve and eliminate unstable units . see micronote 202 for zener impedance va riation with different operating current s. 3. the reverse surge current is measured at 25 o c ambient using a square wave or equivalent half-sine wave pulse 1/120 second duration superimposed on i zt . 4. zener voltage (v z ) is measured at t l = 25oc (+8, -2oc) and 90 seconds after application of dc current. microsemi scottsdale division page 2 copyright ? 2007 6-20-2007 rev e 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
silicon 2.0 watt zener diodes www. microsemi . com scottsdale division smbg4728 thru smbg4764a, e3 smbj4728 thru smbj4764a, e3 smbg(j)4728?4764a, e3 graphs temperature coefficient mv/oc rated power dissipation - w t l t a on fr4 pc board t l , lead temp. ( o c) or nominal zener voltage (volts) figure 3 t a on fr4 pc board figure 2 typical capacitance vs. voltage figure 1 temp. coeff. vs. zener voltage for representative types power derating curve microsemi scottsdale division page 3 copyright ? 2007 6-20-2007 rev e package dimensions & pad layout smbj smbg a b c d e f k l min .077 .160 .130 .205 .077 .235 .015 .030 max .083 .180 .155 .220 .104 .255 .030 .060 dimensions in millimeters min 1.96 4.06 3.30 5.21 1.95 5.97 .381 .760 max 2.10 4.57 3.94 5.59 2.65 6.48 .762 1.520 inches mm a 0.320 8.13 b 0.085 2.16 c 0.110 2.79 inches mm a .260 6.60 b .085 2.16 c .110 2.79 smbg smbj 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
|
