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二极管1N4742资料

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    二极管1N4742参数

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    CE CHENYI ELECTRONICS FEATURES . Silicon planar power zener diodes For use in stabilizing and clipping circuits with high power rating. . Standaards Zener voltage toerance is 10% Add suffix"A" for 5% tolerance Other tolerance available upon request 1N4728 THRU 1N4764 1W SILICON PLANAR ZENER DIODES MECHANICAL DATA . Case: DO-41 glass case .weight: Approx. 0.35 gram ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(TA=25 ) Symbols Zener current see table "Characteristics" Power dissipation at TA=25 Ptot Junction temperature TJ Storage temperature range TSTG 1)Valid provided that a distance of 8mm from case are kept at ambient temperature Value 1 1) 175 -65 to +175 Units mW ELECTRCAL CHARACTERISTICS(TA=25 ) Symbols Min Thermal resistance junction to ambient RthA Forward voltage at IF=200mA VF 1) Valid provided that a distance at 8mm from case are kept at ambient temperature Typ Max Units 170 1) /W 1.2 V Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD Page 1 of 3 CE CHENYI ELECTRONICS 1N4728 THRU 1N4764 1W SILICON PLANAR ZENER DIODES 1N4728…1N4764 SILICON PLANAR ZENER DIODES Type Nominal Zener Voltage 3) Test Current Maximum Zener Impedance 1) Maximum reverse leakage current Surge current Maximum regulator Current 2) at at at at TA=0.25 IZT IZT ZZK IZK at VR IR IZM VZ V IZT mA ZZT mA IR A V mA mA 1N4728 3.3 76 10 1N4729 3.6 69 10 400 1N4730 3.9 64 9 1.0 1380 276 100 1.0 1260 252 50 1.0 1190 234 1N4731 4.3 58 9 1.0 1070 217 1N4732 4.7 53 8 500 1.0 1.0 970 193 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 1N4736 6.8 37 3.5 3.0 730 146 10 4.0 660 133 1N4737 7.5 34 4.0 1N4738 8.2 31 4.5 5.0 605 121 5.0 6.0 550 110 1N4739 9.1 28 5.0 1N4740 10 25 7 700 7.0 500 100 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 1N4748 22 11.5 23 750 15.2 225 45 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 1N4752 33 7.5 45 0.25 25.1 135 27 1000 5 1N4753 36 7.0 50 27.4 125 25 1N4754 39 6.5 60 29.7 115 23 1N4755 43 6.0 70 1N4756 47 5.5 80 1500 32.7 110 22 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 2000 1N4760 68 3.7 150 47.1 70 14 51.7 65 13 1N4761 75 3.3 175 56.0 60 12 1N4762 82 3.0 200 1N4763 91 2.8 250 3000 62.2 55 11 69.2 50 10 1N4764 100 2.5 350 76.0 45 9 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 CHENYI ELECTRONICS 1N4728 THRU 1N4764 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

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