? semiconductor components industries, llc, 2001 may, 2001 rev. 1 1 publication order number: mzp4729a/d mzp4729a series 3 watt do-41 surmetic 30 zener voltage regulators this is a complete series of 3 watt zener diodes with limits and excellent operating characteristics that reflect the superior capabilities of siliconoxide passivated junctions. all this in an axiallead, transfermolded plastic package that offers protection in all common environmental conditions. specification features: ? zener voltage range 3.6 v to 30 v ? esd rating of class 3 (>16 kv) per human body model ? surge rating of 98 w @ 1 ms ? maximum limits guaranteed on up to six electrical parameters ? package no larger than the conventional 1 watt package mechanical characteristics: case: void free, transfermolded, thermosetting plastic finish: all external surfaces are corrosion resistant and leads are readily solderable maximum lead temperature for soldering purposes: 230 c, 1/16 from the case for 10 seconds polarity: cathode indicated by polarity band mounting position: any maximum ratings rating symbol value unit max. steady state power dissipation @ t l = 75 c, lead length = 3/8 derate above 75 c p d 3 24 w mw/ c steady state power dissipation @ t a = 50 c derate above 50 c p d 1 6.67 w mw/ c operating and storage temperature range t j , t stg 65 to +200 c device package shipping ordering information mzp47xxa axial lead 2000 units/box mzp47xxarl axial lead axial lead case 59 plastic http://onsemi.com 6000/tape & reel cathode anode polarity band up with cathode lead off first polarity band down with cathode lead off first l mzp4 7xxa yyww l = assembly location mzp47xxa = device code = (see table next page) yy = year ww = work week marking diagram mzp47xxata axial lead 4000/ammo pack mzp47xxarr1 axial lead 2000/tape & reel mzp47xxarr2 axial lead 2000/tape & reel
zener voltage regulator i f v i i r i zt v r v z v f mzp4729a series http://onsemi.com 2 electrical characteristics (t a = 25 c unless otherwise noted, v f = 1.5 v max @ i f = 200 ma for all types) symbol parameter v z reverse zener voltage @ i zt i zt reverse current z zt maximum zener impedance @ i zt i zk reverse current z zk maximum zener impedance @ i zk i r reverse leakage current @ v r v r breakdown voltage i f forward current v f forward voltage @ i f i r surge current @ t a = 25 c
mzp4729a series http://onsemi.com 3 electrical characteristics (t a = 25 c unless otherwise noted, v f = 1.5 v max @ i f = 200 ma for all types) zener voltage (note 2.) zener impedance (note 3.) leakage current i r device device v z (volts) @ i zt z zt @ i zt z zk @ i zk i r @ v r i r (note 4.) d ev i ce (note 1.) d ev i ce marking min nom max ma ma m a max volts ma mzp4729a mzp4729a 3.42 3.6 3.78 69 10 400 1 100 1 1260 mzp4734a mzp4734a 5.32 5.6 5.88 45 5 600 1 10 2 810 mzp4735a mzp4735a 5.89 6.2 6.51 41 2 700 1 10 3 730 mzp4736a mzp4736a 6.46 6.8 7.14 37 3.5 700 1 10 4 660 mzp4737a mzp4737a 7.13 7.5 7.88 34 4 700 0.5 10 5 605 mzp4738a mzp4738a 7.79 8.2 8.61 31 4.5 700 0.5 10 6 550 mzp4740a mzp4740a 9.50 10 10.50 25 7 700 0.25 10 7.6 454 mzp4741a mzp4741a 10.45 11 11.55 23 8 700 0.25 5 8.4 414 mzp4744a mzp4744a 14.25 15 15.75 17 14 700 0.25 5 11.4 304 mzp4745a mzp4745a 15.20 16 16.80 15.5 16 700 0.25 5 12.2 285 mzp4746a mzp4746a 17.10 18 18.90 14 20 750 0.25 5 13.7 250 mzp4749a mzp4749a 22.80 24 25.20 10.5 25 750 0.25 5 18.2 190 mzp4750a mzp4750a 25.65 27 28.35 9.5 35 750 0.25 5 20.6 170 mzp4751a mzp4751a 28.50 30 31.50 8.5 40 1000 0.25 5 22.8 150 mzp4752a mzp4752a 31.35 33 34.65 7.5 45 1000 0.25 5 25.1 135 mzp4753a mzp4753a 34.20 36 37.80 7.0 50 1000 0.25 5 27.4 125 1. tolerance and type number designation the type numbers listed have a standard tolerance on the nominal zener voltage of 5%. 2. zener voltage (v z ) measurement on semiconductor guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (t l ) at 30 c 1 c, 3/8 from the diode body. 3. zener impedance (z z ) derivation the zener impedance is derived from 60 seconds ac voltage, which 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 . 4. surge current (i r ) nonrepetitive the rating listed in the electrical characteristics table is maximum peak, nonrepetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current, i zt , per jedec standards. however, actual device capability is as described in figure 3 of the general data sheet for surmetic 30s. figure 1. power temperature derating curve t l , lead temperature ( c) 0 20 40 60 200 80 100 120 140 160 180 0 1 2 3 4 5 l = 1/8 l = 3/8 l = 1 l = lead length to heat sink p d , maximum steady state power dissipation (watts)
mzp4729a series http://onsemi.com 4 t, time (seconds) 0.0001 0.0002 0.0005 0.001 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 0.3 0.5 0.7 1 2 3 5 7 10 20 30 d =0.5 0.2 0.1 0.05 0.01 d = 0 duty cycle, d =t 1 /t 2 q jl (t, d) transient thermal resistance junctiontolead ( c/w) p pk t 1 note: below 0.1 second, thermal response curve is applicable to any lead length (l). single pulse d t jl = q jl (t)p pk repetitive pulses d t jl = q jl (t,d)p pk t 2 0.02 10 20 30 50 100 200 300 500 1k 0.1 0.2 0.3 0.5 1 2 3 5 10 20 30 50 100 pw, pulse width (ms) p , peak surge power (watts) pk 1 2 5 10 20 50 100 200 400 1000 0.0003 0.0005 0.001 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 3 t a = 125 c t a = 125 c nominal v z (volts) as specified in elec. char. table figure 2. typical thermal response l, lead length = 3/8 inch figure 3. maximum surge power figure 4. typical reverse leakage i r , reverse leakage ( m adc) @ v r rectangular nonrepetitive waveform t j =25 c prior to initial pulse
mzp4729a series http://onsemi.com 5 application note since the actual voltage available from a given zener diode is temperature dependent, it is necessary to determine junction temperature under any set of operating conditions in order to calculate its value. the following procedure is recommended: lead temperature, t l , should be determined from: t l = q la p d + t a q la is the lead-to-ambient thermal resistance ( c/w) and p d is the power dissipation. the value for q la will vary and depends on the device mounting method. q la is generally 3040 c/w for the various clips and tie points in common use and for printed circuit board wiring. the temperature of the lead can also be measured using a thermocouple placed on the lead as close as possible to the tie point. the thermal mass connected to the tie point is normally large enough so that it will not significantly respond to heat surges generated in the diode as a result of pulsed operation once steady-state conditions are achieved. using the measured value of t l , the junction temperature may be determined by: t j = t l + d t jl d t jl is the increase in junction temperature above the lead temperature and may be found from figure 2 for a train of power pulses (l = 3/8 inch) or from figure 10 for dc power. d t jl = q jl p d for worst-case design, using expected limits of i z , limits of p d and the extremes of t j ( d t j ) may be estimated. changes in voltage, v z , can then be found from: d v = q vz d t j q vz , the zener voltage temperature coefficient, is found from figures 5 and 6. under high power-pulse operation, the zener voltage will vary with time and may also be affected significantly by the zener resistance. for best regulation, keep current excursions as low as possible. data of figure 2 should not be used to compute surge capability. surge limitations are given in figure 3. they are lower than would be expected by considering only junction temperature, as current crowding effects cause temperatures to be extremely high in small spots resulting in device degradation should the limits of figure 3 be exceeded.
mzp4729a series http://onsemi.com 6 figure 5. units to 12 volts figure 6. units 10 to 400 volts figure 7. v z = 3.3 thru 10 volts figure 8. v z = 12 thru 82 volts figure 9. v z = 100 thru 400 volts figure 10. typical thermal resistance zener voltage versus zener current (figures 7, 8 and 9) temperature coefficient ranges (90% of the units are in the ranges indicated) v z , zener voltage @ i zt (volts) 34 5 6 789101112 10 8 6 4 2 0 -2 -4 range , temperature coefficient (mv/ c) @ i zt vz q 1000 500 200 100 50 20 10 10 20 50 100 200 400 1000 v z , zener voltage @ i zt (volts) , temperature coefficient (mv/ c) @ i zt vz q 01 234 56 7 8910 100 50 30 20 10 1 0.5 0.3 0.2 0.1 v z , zener voltage (volts) i , zener current (ma) z 2 5 3 0102030405060708090100 v z , zener voltage (volts) i , zener current (ma) z 100 50 30 20 10 1 0.5 0.3 0.2 0.1 2 5 3 100 200 300 400 250 350 150 10 1 0.5 0.2 0.1 v z , zener voltage (volts) 2 5 i , zener current (ma) z 0 10 20 30 40 50 60 70 80 l, lead length to heat sink (inch) primary path of conduction is through the cathode lead 0 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1 t l jl , junctiontolead thermal resistance q l l ( c/w)
mzp4729a series http://onsemi.com 7 outline dimensions 3 watt do41 surmetic 30 zener voltage regulators axial leaded plastic do41 case 5903 issue m b d k k f f a dim min max min max inches millimeters a 4.07 5.20 0.160 0.205 b 2.04 2.71 0.080 0.107 d 0.71 0.86 0.028 0.034 f --- 1.27 --- 0.050 k 27.94 --- 1.100 --- notes: 1. all rules and notes associated with jedec do-41 outline shall apply. 2. polarity denoted by cathode band. 3. lead diameter not controlled within f dimension.
mzp4729a series http://onsemi.com 8 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthori zed use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. publication ordering information central/south america: spanish phone : 3033087143 (monfri 8:00am to 5:00pm mst) email : onlitspanish@hibbertco.com tollfree from mexico: dial 018002882872 for access then dial 8662979322 asia/pacific : ldc for on semiconductor asia support phone : 13036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong & singapore: 00180044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1410031 phone : 81357402700 email : r14525@onsemi.com on semiconductor website : http://onsemi.com for additional information, please contact your local sales representative. mzp4729a/d surmetic is a trademark of semiconductor components industries, llc. north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com fax response line: 3036752167 or 8003443810 toll free usa/canada n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone : (+1) 3033087140 (monfri 2:30pm to 7:00pm cet) email : onlitgerman@hibbertco.com french phone : (+1) 3033087141 (monfri 2:00pm to 7:00pm cet) email : onlitfrench@hibbertco.com english phone : (+1) 3033087142 (monfri 12:00pm to 5:00pm gmt) email : onlit@hibbertco.com european tollfree access*: 0080044223781 *available from germany, france, italy, uk, ireland
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