1N4731

1N4728A THRU 1N4764A 1W EPITAXIAL ZENER DIODE FEATURES • Low profile package • Built-in strain relief • Low inductance • High temperature soldering : 260°C /10 seconds at terminals • Glass package has Underwriters Laboratory Flammability Classification • In compliance with EU RoHS 2002/95/EC directives DO-41(GLASS) Φ 0.8± 0.1 • Case: Molded Glass DO-41G • Terminals: Axial leads, solderable per MIL-STD-750, Method 2026 guaranteed • Polarity: Color band denotes positive end • Mounting position:Any • Weight: 0.012 ounce, 0.336 gram Φ 2.5 ± 0.2 All Dimensions in mm ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(TA=25℃) Symbols Zener current see table "Characteristics" Power dissipation at TA=50℃ Junction temperature Storage temperature range Value Units Ptot TJ TSTG 1 25.4 ± 1 4.5 ± 0.2 MECHANICAL DATA 25.4 ± 1 1) W 175 -65 to +175 ℃ ℃ 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 Typ Max 170 1.2 1) Units RthA VF ℃/W V 1) Valid provided that a distance at 8mm from case are kept at ambient temperature 1N4728A THRU 1N4764A 1W EPITAXIAL ZENER DIODE Nominal Zener Test Current 3) Maximum Zener Impedance at IZT ZZK 1) Type Voltage at Maximum reverse leakage current Surge current at TA=0.25 Maximum regulator Current IR IZM 2) at IZK at VR IZT VZ V 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 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 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 ZZT 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 3000 2000 1500 1000 750 700 500 550 600 400 mA IR A 100 50 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 16.7 18.2 20.6 22.8 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 mA 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 1.0 10 5.0 0.25 5 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56.0 62.2 69.2 76.0 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. 1N4728A THRU 1N4764A RATINGS AND CHARACTERISTIC CURVES FIG.1 -- BREAKDOWN CHARACTERISTICS 100 mA 5 10 15 20 25 30 V IZ 80 60 40 20 0 FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE W 1.0 1N4728 1N4733 1N4735 1N4742 1N4744 1N4747 1N4731 1N4732 1N4739 1N4741 1N4748 1N4749 1N4750 VZ 0.8 Ptot 0.6 0.4 0.2 0 0 100 Tamb 200℃