motorola semiconductor technical data motorola tvs/zener device data 6-1 500 mw do-35 glass data sheet 11.3 watt do-41 glass zener voltage regulator diodes general data applicable to all series in this group one watt hermetically sealed glass silicon zener diodes specification features: ? complete voltage range e 3.3 to 100 volts ? do-41 package ? double slug type construction ? metallurgically bonded construction ? oxide passivated die mechanical characteristics: case: double slug type, hermetically sealed glass maximum lead temperature for soldering purposes: 230 c, 1/16 from case for 10 seconds finish: all external surfaces are corrosion resistant with readily solderable leads polarity: cathode indicated by color band. when operated in zener mode, cathode will be positive with respect to anode mounting position: any wafer fab location: phoenix, arizona assembly/test location: seoul, korea maximum ratings rating symbol value unit dc power dissipation @ t a = 50 c derate above 50 c p d 1 6.67 watt mw/ c operating and storage junction temperature range t j , t stg 65 to +200 c figure 1. power temperature derating curve t l , lead temperature ( c) p , maximum dissipation (watts) d 0 20 40 60 200 80 100 120 140 160 180 0.25 0.5 0.75 1 1.25 l = lead length to heat sink l = 3/8 l = 1/8 l = 1 1n4728a series case 59-03 do-41 glass 11.3 watt do-41 glass 1 watt zener regulator diodes 3.3100 volts
general data e 500 mw do-35 glass motorola tvs/zener device data 6-2 500 mw do-35 glass data sheet *electrical characteristics (t a = 25 c unless otherwise noted) v f = 1.2 v max, i f = 200 ma for all types. jedec nominal zener voltage test maximum zener impedance (note 4) leakage current surge current @ jedec type no. (note 1) zener voltage v z @ i zt volts (notes 2 and 3) test current i zt ma z zt @i zt ohms z zk @i zk ohms i zk ma i r m a max v r volts surge current @ t a = 25 c i r ma (note 5) 1n4728a 3.3 76 10 400 1 100 1 1380 1n4729a 3.6 69 10 400 1 100 1 1260 1n4730a 3.9 64 9 400 1 50 1 1190 1n4731a 4.3 58 9 400 1 10 1 1070 1n4732a 4.7 53 8 500 1 10 1 970 1n4733a 5.1 49 7 550 1 10 1 890 1n4734a 5.6 45 5 600 1 10 2 810 1n4735a 6.2 41 2 700 1 10 3 730 1n4736a 6.8 37 3.5 700 1 10 4 660 1n4737a 7.5 34 4 700 0.5 10 5 605 1n4738a 8.2 31 4.5 700 0.5 10 6 550 1n4739a 9.1 28 5 700 0.5 10 7 500 1n4740a 10 25 7 700 0.25 10 7.6 454 1n4741a 11 23 8 700 0.25 5 8.4 414 1n4742a 12 21 9 700 0.25 5 9.1 380 1n4743a 13 19 10 700 0.25 5 9.9 344 1n4744a 15 17 14 700 0.25 5 11.4 304 1n4745a 16 15.5 16 700 0.25 5 12.2 285 1n4746a 18 14 20 750 0.25 5 13.7 250 1n4747a 20 12.5 22 750 0.25 5 15.2 225 1n4748a 22 11.5 23 750 0.25 5 16.7 205 1n4749a 24 10.5 25 750 0.25 5 18.2 190 1n4750a 27 9.5 35 750 0.25 5 20.6 170 1n4751a 30 8.5 40 1000 0.25 5 22.8 150 1n4752a 33 7.5 45 1000 0.25 5 25.1 135 1n4753a 36 7 50 1000 0.25 5 27.4 125 1n4754a 39 6.5 60 1000 0.25 5 29.7 115 1n4755a 43 6 70 1500 0.25 5 32.7 110 1n4756a 47 5.5 80 1500 0.25 5 35.8 95 1n4757a 51 5 95 1500 0.25 5 38.8 90 1n4758a 56 4.5 110 2000 0.25 5 42.6 80 1n4759a 62 4 125 2000 0.25 5 47.1 70 1n4760a 68 3.7 150 2000 0.25 5 51.7 65 1n4761a 75 3.3 175 2000 0.25 5 56 60 1n4762a 82 3 200 3000 0.25 5 62.2 55 1n4763a 91 2.8 250 3000 0.25 5 69.2 50 1n4764a 100 2.5 350 3000 0.25 5 76 45 *indicates jedec registered data. note 1. tolerance and type number designation the jedec type numbers listed have a standard tolerance on the nominal zener voltage of 5%. c for 2%, d for 1%. note 2. specials available include: nominal zener voltages between the voltages shown and tighter voltage tolerances. for detailed information on price, availability, and delivery, contact your nearest motorola rep- resentative. note 3. zener voltage (v z ) measurement motorola 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. note 4. zener impedance (z z ) derivation the zener impedance is derived from the 60 cycle ac voltage, which results when an ac cur- rent 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 . note 5. surge current (i r ) non-repetitive the rating listed in the electrical characteristics table is maximum peak, non-repetitive, re- verse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second dura- tion superimposed on the test current, i zt , per jedec registration; however, actual device capability is as described in figure 5 of the general data e do-41 glass.
general data e 500 mw do-35 glass motorola tvs/zener device data 6-3 500 mw do-35 glass data sheet figure 2. temperature coefficients (55 c to +150 c temperature range; 90% of the units are in the ranges indicated.) a. range for units to 12 volts b. range for units to 12 to 100 volts +12 +10 +8 +6 +4 +2 0 2 4 23456789101112 v z , zener voltage (volts) q v z , temperature coefficient (mv/ c) 100 70 50 30 20 10 7 5 3 2 1 10 20 30 50 70 100 v z , zener voltage (volts) q v z , temperature coefficient (mv/ c) v z @i zt range range v z @i zt figure 3. typical thermal resistance versus lead length figure 4. effect of zener current 175 150 125 100 75 50 25 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 l, lead length to heat sink (inches) q jl , junction-to-lead thermal resistance (mv/ c/w) q v z , temperature coefficient (mv/ c) +6 +4 +2 0 2 4 34 5678 v z , zener voltage (volts) v z @i z t a =25 c 20 ma 0.01 ma 1ma note: below 3 volts and above 8 volts note: changes in zener current do not note: effect temperature coefficients figure 5. maximum surge power 100 70 50 30 20 10 7 5 3 2 1 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000 pw, pulse width (ms) this graph represents 90 percentile data points. for worst case design characteristics, multiply surge power by 2/3. p pk , peak surge power (watts) 11 v100 v nonrepetitive 3.3 v10 v nonrepetitive 5% duty cycle 10% duty cycle 20% duty cycle rectangular waveform t j =25 c prior to initial pulse
general data e 500 mw do-35 glass motorola tvs/zener device data 6-4 500 mw do-35 glass data sheet figure 10. typical forward characteristics v f , forward voltage (volts) 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1000 500 200 100 50 20 10 5 2 1 i f , forward current (ma) maximum 150 c 75 c 0 c 25 c figure 6. effect of zener current on zener impedance figure 7. effect of zener voltage on zener impedance figure 9. typical capacitance versus v z figure 8. typical leakage current 1000 500 200 100 50 20 10 5 2 1 0.1 0.2 0.5 1 2 5 10 20 50 100 i z , zener current (ma) z z , dynamic impedance (ohms) 1000 700 500 200 100 70 50 20 10 7 5 2 1 1 2 100 v z , zener current (ma) 35710 20305070 z z , dynamic impedance (ohms) 10000 7000 5000 2000 1000 700 500 200 100 70 50 20 10 7 5 2 1 0.7 0.5 0.2 0.1 0.07 0.05 0.02 0.01 0.007 0.005 0.002 0.001 i r , leakage current ( m a) 3456789101112131415 v z , nominal zener voltage (volts) +25 c +125 c typical leakage current at 80% of nominal breakdown voltage t j = 25 c i z (rms) = 0.1 i z (dc) f = 60 hz 6.2 v 27 v v z = 2.7 v 47 v t j = 25 c i z (rms) = 0.1 i z (dc) f = 60 hz 20 ma 5 ma i z = 1 ma 0 v bias 1 v bias 400 300 200 100 50 20 10 8 4 1 2 5 10 20 50 100 v z , nominal v z (volts) c, capacitance (pf) 50% of breakdown bias minimum
general data e 500 mw do-35 glass motorola tvs/zener device data 6-5 500 mw do-35 glass data sheet application note since the actual voltage available from a given zener diode is temperature dependent, it is necessary to determine junc- tion temperature under any set of operating conditions in order to calculate its value. the following procedure is recom- mended: 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 30 to 40 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 mea- sured value of t l , the junction temperature may be deter- mined 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 as follows: d t jl = q jl p d . q jl may be determined from figure 3 for dc power condi- tions. 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 figure 2. 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. surge limitations are given in figure 5. they are lower than would be expected by considering only junction temperature, as current crowding effects cause temperatures to be ex- tremely high in small spots, resulting in device degradation should the limits of figure 5 be exceeded.
general data e 500 mw do-35 glass motorola tvs/zener device data 6-6 500 mw do-35 glass data sheet 11.3 watt do-41 glass multiple package quantity (mpq) requirements zener voltage regulator diodes e axial leaded case 59-03 do-41 glass (refer to section 10 for surface mount, thermal data and footprint information.) (refer to section 10 for more information on packaging specifications.) package option tape and reel 6k type no. suffix rl, rl2 mpq (units) tape and ammo ta, ta2 4k 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. k k f a f d min min max max millimeters inches dim 4.07 2.04 0.71 e 27.94 5.20 2.71 0.86 1.27 e 0.160 0.080 0.028 e 1.100 0.205 0.107 0.034 0.050 e a b d f k b note: 1. the a2o suffix refers to 26 mm tape spacing.
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