CE 1N4728 THRU 1N4764 CHENYI ELECTRONICS 1W SILICON PLANAR ZENER DIODES FEATURES . Silicon planar power zener diodes For use in stabilizing and clipping circuits with high power rating. . Standaards Zener voltage toerance is Add suffix"A" for 10% 5% tolerance Other tolerance available upon request MECHANICAL DATA . Case: DO-41 glass case .weight: Approx. 0.35 gram ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(TA=25 Symbols ) Value Units Zener current see table "Characteristics" Power dissipation at TA=25 Junction temperature Storage temperature range 1 Ptot 1) TJ 175 TSTG -65 to +175 mW 1)Valid provided that a distance of 8mm from case are kept at ambient temperature ELECTRCAL CHARACTERISTICS(TA=25 ) Symbols Thermal resistance junction to ambient Forward voltage at IF=200mA Min RthA VF Typ Max 170 1.2 1) Units /W V 1) Valid provided that a distance at 8mm from case are kept at ambient temperature Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD Page 1 of 3 CE 1N4728 THRU 1N4764 CHENYI ELECTRONICS 1W SILICON PLANAR ZENER DIODES 1N4728…1N4764 SILICON PLANAR ZENER DIODES Type Nominal Test Zener Current Voltage 1) Maximum reverse leakage current Surge Maximum current regulator Current 3) at at IZT VZ V Maximum Zener Impedance IZT IZT mA ZZK ZZT IZK mA IR A at VR IR IZM V mA mA 1.0 1380 276 1.0 1260 252 1.0 1190 234 1.0 1070 217 1.0 970 193 1N4728 3.3 76 10 1N4729 3.6 69 10 1N4730 3.9 64 9 1N4731 4.3 58 9 1N4732 4.7 53 8 500 1N4733 5.1 49 7 550 1.0 890 178 1N4734 5.6 45 5 600 2.0 810 162 1N4735 6.2 41 2 3.0 730 146 1N4736 6.8 37 3.5 4.0 660 133 1N4737 7.5 34 4.0 5.0 605 121 6.0 550 110 7.0 500 100 1N4738 8.2 31 4.5 1N4739 9.1 28 5.0 100 400 50 1.0 10 5.0 700 1N4740 10 25 7 7.6 454 91 1N4741 11 23 8 8.4 414 83 1N4742 12 21 9 9.1 380 76 1N4743 13 19 10 9.9 344 69 1N4744 15 17 14 11.4 304 61 1N4745 16 15.5 16 12.2 285 57 1N4746 18 14 20 13.7 250 50 1N4747 20 12.5 22 15.2 225 45 1N4748 22 11.5 23 16.7 205 41 1N4749 24 10.5 25 18.2 190 38 1N4750 27 9.5 35 20.6 170 34 1N4751 30 8.5 40 22.8 150 30 750 0.25 1N4752 33 7.5 45 25.1 135 27 1N4753 36 7.0 50 27.4 125 25 1N4754 39 6.5 60 29.7 115 23 1N4755 43 6.0 70 32.7 110 22 1N4756 47 5.5 80 35.8 95 19 1N4757 51 5.0 95 38.8 90 18 1N4758 56 4.5 110 42.6 80 16 1N4759 62 4.0 125 47.1 70 14 1N4760 68 3.7 150 51.7 65 13 1N4761 75 3.3 175 56.0 60 12 1N4762 82 3.0 200 62.2 55 11 1N4763 91 2.8 250 69.2 50 10 1N4764 100 2.5 350 76.0 45 9 1000 2) at TA=0.25 at 5 1500 2000 3000 Notes:1) The Zener impedance is derived from the 1KHz AC voltage which results when an AC current having an RMS calue equal to 10% of the Zener current(IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. 2)Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature 3)Measured under thermal equilibriun and DC test conditions. Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD Page 2 of 3 CE 1N4728 THRU 1N4764 CHENYI ELECTRONICS 1W SILICON PLANAR ZENER DIODES RATINGS AND CHARACTERISTIC CURVES 1N4728 THRI 1N4764 Admissible power dissipation versus ambient temperature (Valid provided that leads at a distance of 10mm from case are kept at ambient temperature) Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD Page 3 of 3