features hermetic glass package silicon planar zener diodes mechanical data case: do-41 glass package weight: 0.3 09 grams (approx.) maximum ratings operating temperature: -65 o c to +200 o c storage temperature: -65 o c to +200 o c for capacitive load, derate current by 20% electrical characteristics @ 25 o c unless otherwise specified note: (1) valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature. 1n4728 thru 1n476 1.0 watt zener diode 3.3 to 75 volts a b c d d cathode mark min max min max a 0.166 0.205 4.10 7.60 b 0.080 0.107 2.00 3.60 diameter c 0.026 0.034 0.70 0.90 diameter d 1.000 ----- 25.40 ----- dimensions dim inches mm note do-41g omp onents 20736 marilla street chatsworth
mcc dc power dissipation p d 1.0w t a 50 o c forward thermal resistance r th ja 100 k /w note 1 power derating from 100 o c p tot 10mw/ o c tm micro commercial components marking : cathode band and type number www. mccsemi .com 1 of 4 1n4728 thru 1n4761 voltage v f 1.2v drop revision: 11 2008 /04/02 lead free finish/rohs compliant (note2) ("p"suffix designates compliant. see ordering information) (2) . lead in glass exemption applied, see eu directive annex 5.
note 1: the jedec type number shown with an a suffix have a 5% tolerance on nominal zener voltage. no suffix signifies a 10% tolerance, c signifies 2%. 2: the zener impedance is derived from the 60 hz ac voltage, which r esults 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 two points to insure a sharp knee on the breakdown curve and eliminate unstable units. 3: the reve rse surge current is measured at 25 o c ambient using a 1/2 square wave or equivalent sine wave pulse 1/120 second duration superimposed on i zt . 4: voltage measurements tobe performed 90 seconds after application of dc current. mcc 5: rohs compliant already and pb-free sticker on reel , box & carto n indicated rohs compliant . mcc zener test surge maximum part number voltage current current regulator current v z @i zt i zt z zt @i zt z zk @i zk i zk i r @v r v r i r i zm volts ma ohms ohms ma ua volts ma ma 1n4728 3.3 76 10 400 1 100 1 1380 276 1n4729 3.6 69 10 400 1 100 1 1260 252 1n4730 3.9 64 9 400 1 50 1 1190 234 1n4731 4.3 58 9 400 1 10 1 1070 217 1n4732 4.7 53 8 500 1 10 1 970 193 1n4733 5.1 49 7 550 1 10 1 890 178 1n4734 5.6 45 5 600 1 10 2 810 162 1n4735 6.2 41 2 700 1 10 3 730 146 1n4736 6.8 37 3.5 700 1 10 4 660 133 1n4737 7.5 34 4 700 0.5 10 5 605 121 1n4738 8.2 31 4.5 700 0.5 10 6 550 110 1n4739 9.1 28 5 700 0.5 10 7 500 100 1n4740 10 25 7 700 0.25 10 7.6 454 91 1n4741 11 23 8 700 0.25 5 8.4 414 83 1n4742 12 21 9 700 0.25 5 9.1 380 76 1n4743 13 19 10 700 0.25 5 9.9 344 69 1n4744 15 17 14 700 0.25 5 11.4 304 61 1n4745 16 15.5 16 700 0.25 5 12.2 285 57 1n4746 18 14 20 750 0.25 5 13.7 250 50 1n4747 20 12.5 22 750 0.25 5 15.2 225 45 1n4748 22 11.5 23 750 0.25 5 16.7 205 41 1n4749 24 10.5 25 750 0.25 5 18.2 190 38 1n4750 27 9.5 35 750 0.25 5 20.6 170 34 1n4751 30 8.5 40 1000 0.25 5 22.8 150 30 1n4752 33 7.5 45 1000 0.25 5 25.1 135 27 1n4753 36 7 50 1000 0.25 5 27.4 125 25 1n4754 39 6.5 60 1000 0.25 5 29.7 115 23 1n4755 43 6 70 1500 0.25 5 32.7 110 22 1n4756 47 5.5 80 1500 0.25 5 35.8 95 19 1n4757 51 5 95 1500 0.25 5 38.8 90 18 1n4758 56 4.5 110 2000 0.25 5 42.6 80 16 1n4759 62 4 125 2000 0.25 5 47.1 70 14 1n4760 68 3.7 150 2000 0.25 5 51.7 65 13 1n4761 75 3.3 175 2000 0.25 5 56 60 12 leakage current maximum reverse maximum dynamic impedance electrical characteristics (t a = 25? unless otherwise noted). maximum v f = 1.2v at i f = 200ma 1n4728 thru 1n476 1 www. mccsemi .com 2 mcc revision: 11 2008 /04/02
1n4728 thru 1n476 1 www. mccsemi .com 3 of 4 mcc tm micro commercial components figure 3 . effect of zener current on zener impedance figure 4 . effect of zener voltage on zener impedance 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) 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 figure 1 . typical thermal resistance versus lead length figure 2 . 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) jl , junction-to-lead thermal resistance (mv/ c/w) v z , temperature coefficient (mv/ c) +6 +4 +2 0 ? ? 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 v?00 v nonrepetitive 3.3 v?0 v nonrepetitive 5% duty cycle 10% duty cycle 20% duty cycle rectangular waveform t j =25 c prior to initial pulse revision: 11 2008 /04/02
mcc tm micro commercial components www. mccsemi .com 4 of 4 products are represented on our website, harmless against all damages. ***applications disclaimer*** ***important notice*** aerospace or military applications. products offer by micro commercial components corp . are not intended for use in medical, micro commercial components corp . reserve s the right to make changes without further notice to any product herein to make corrections, modifications , enhancements , improvements , or other changes . micro commercial components corp . does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights ,nor the rights of others . the user of products in such applications shall assume all risks of such use and will agree to hold micro commercial components corp . and all the companies whose evision ordering information device packing (part number)-tp tape&reel; 5kpcs/reel (part number)-ap ammo packing;2.5kpcs/ammobox (part number)-bp bulk;1kpcs/box
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