1N4728B

1N4728A/B THRU 1N4764A/B Features · Silicon planar power zener diodes · For use in stabilizing and clipping circuits with high power rating. · Standards Zener voltage tolerance is ±10% Add suffix "A" for ±5% tolerance other tolerance available upon request 1W SILICON PLANAR ZENER DIODES DO-41(GLASS) 0.102(2.6) MAX. DIA. 1.102(28.0) MIN. 0.161(4.1) MAX. Mechanical Data · Case : DO-41 glass case · Weight : Approx. 0.35 gram 0.034(0.86) MAX. DIA. 1.102(28.0) MIN. Dimensions in inches and (millimeters) Absolute Maximum Ratings (Limiting Values) (TA=25℃) Symbols Value Pd / Vz 11) 175 -55 to+175 Units mA W ℃ ℃ Zener current see table "Characteristics" Power dissipation at TA=25℃ Junction Temperature Storage Temperature range 1) Valid provided that a distance of 8mm from case are kept at ambient temperature IZ Ptot TJ TSTG Electrical Characteristics (TA=25℃) Symbols Min. Typ. Max. 1751) 1.2 Units ℃/W V Thermal resistance junction to ambient Forward voltage at IF=200mA RθJA VF 1) Valid provided that a distance of 8mm from case are kept at ambient temperature 1N4728...1N4764 SILICON PLANAR ZENER DIODES Nominal Zener Voltage3) Test Current Maximum zener impedance1) Maximum Reverse Leakage Current IR μA Surge Current Maximum Regulator Current2) Type 1N4728 1N4729 1N4730 1N4731 1N4732 1N4733 1N4734 1N4735 1N4736 1N4737 1N4738 1N4739 1N4740 1N4741 1N4742 1N4743 1N4744 1N4745 1N4746 1N4747 1N4748 1N4749 1N4750 1N4751 1N4752 1N4753 1N4754 1N4755 1N4756 1N4757 1N4758 1N4759 1N4760 1N4761 1N4762 1N4763 1N4764 at IzT Vz V IZT mA 76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 3.3 3.0 2.8 2.5 at IzT ZZT Ω 10 10 9 9 8 7 5 2 3.5 4.0 4.5 5.0 7 8 9 10 14 16 20 22 23 25 35 40 45 50 60 70 80 95 110 125 150 175 200 250 350 ZZK Ω at IZK mA at VR V 1.0 1.0 1.0 1.0 1.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 at TA=0.25 IR mA 1380 1260 1190 1070 970 890 810 730 660 605 550 500 454 414 380 344 304 285 250 225 205 190 170 150 135 125 115 110 95 90 80 70 65 60 55 50 45 IZM mA 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 100 400 50 1.0 276 252 234 217 193 178 162 146 133 121 110 100 91 83 76 69 61 57 50 45 41 38 34 30 27 25 23 22 19 18 16 14 13 12 11 10 9 500 550 600 10 0.5 700 750 16.7 18.2 20.6 0.25 22.8 5 25.1 27.4 29.7 32.7 1000 1500 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0 2000 3000 Notes: 1) The zener impedance is derived from the 1kHz AC voltage which results when on AC current having an RMS value 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) Vaild provided that electrodes at a distance of 10mm from case are kept at ambient temperature. 3) Measured under thermal equilibrium and DC test conditions. RATINGS AND CHARACTERISTIC CURVES 1N4728A/B THRU 1N4764A/B Admissible power dissipation versus ambient temperature (Valid provided that leads at a distance of 10mm from case are kept at ambient temperature) W 1.0 1N4728A/B...1N4764A/B Ptot 0.8 0.6 0.4 0.2 0 0 100 Tamb 200 ℃