silicon 1 watt 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 ? 2005 10-18-2005 rev c www. microsemi . com scottsdale division 1n4728ap thru 1n4764ap,e3 (plastic) 1n4728ap-1n4764ap,e3 description appearance the popular 1n4728ap thru 1n4764ap series of 1.0 watt zeners provides voltage regulation in a selection from 3.3 to 100 volts in 5% tolerances with other tighter tolerances also available as identified by different suffix letters in the part number. these plasti c encapsulated zeners are moisture classified as level 1 with no dry pack required. they are also available in various military screening levels by addi ng a prefix identifie r as described in the features below. these plastic mo lded zeners with a p suffix provide a lower thermal resistance compared to the glass-body (g suffix) option for these same jedec part numbers. bo th package options are available by microsemi in rohs compliant devices wi th an ?e3? suffix. microsemi also offers numerous other zener products to meet higher and lower power and test current applications. do-41 or do-204al ( plastic ) important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? jedec registered 1n4728a to 1n4764a ? extensive voltage selection from 3.3 to 100 v ? 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 numbers. ? surface mount equivalents available as smaj4728a to smaj4764a and mll4728a to mll4764a (consult factory for others) ? rohs compliant devices available by adding ?e3? suffix ? regulates voltage over a broad operating current and temperature range ? 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 ? flexible axial-lead mounting terminals ? nonsensitive to esd per mil-std-750 method 1020 ? moisture classification is level 1 per ipc/jedec j- std-020b with no dry pack required maximum ratings mechanical and packaging ? power dissipation at 25 o c: 1.0 watts (also see derating in figure 1). ? operating and storage temperature: -65 o c to +150 o c ? thermal resistance: 45 o c/w junction to lead at 3/8 (10 mm) lead length from body, or 105 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: 1.0 watts at t l < 105 o c 3/8 inch (10 mm) from body or at t a < 45 o c when mounted on fr4 pc board as described for thermal resistance above (also see figure 1) ? forward voltage @200 ma: 1.2 volts (maximum) ? solder temperatures: 260 o c for 10 s (max) ? case: void-free transfer molded thermosetting epoxy body meeting ul94v-0 ? terminals: tin-lead (sn/pb) 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: 0.7 grams ? see package dimensions on last page
silicon 1 watt zener diodes www. microsemi . com scottsdale division 1n4728ap thru 1n4764ap,e3 (plastic) 1n4728ap-1n4764ap,e3 electrical characteristics* 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 sm ) (note 3) jedec type number (note 1) volts ma ohms a volts ma ohms ma ma 1n4728a 1n4729a 1n4730a 1n4731a 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 1n4732a 1n4733a 1n4734a 1n4735a 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 1n4736a 1n4737a 1n4738a 1n4739a 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 1n4740a 1n4741a 1n4742a 1n4743a 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 1n4744a 1n4745a 1n4746a 1n4747a 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 1n4748a 1n4749a 1n4750a 1n4751a 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 1n4752a 1n4753a 1n4754a 1n4755a 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 1n4756a 1n4757a 1n4758a 1n4759a 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 1n4760a 1n4761a 1n4762a 1n4763a 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 1n4764a 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, e.g. 1n4764ap (g suffi x designates glass body options described by separate data sheet). 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 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 ? 2005 10-18-2005 rev c 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
silicon 1 watt zener diodes www. microsemi . com scottsdale division 1n4728ap thru 1n4764ap,e3 (plastic) 1n4728ap-1n4764ap,e3 graphs temperature coefficient mv/oc rated power dissipation - w t l t a on fr4 pc board t l , lead temp. ( o c) 3/8? from body nominal zener voltage (volts) figure 3 or t a on fr4 pc board figure 2 capacitance vs. voltage for representative types figure 1 temp. coeff. vs. zener voltage power derating curve package dimensions (do-41 or do-204al) microsemi scottsdale division page 3 copyright ? 2005 10-18-2005 rev c 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
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