1N4728A THRU 1N4764A 1W EPITAXIAL ZENER DIODE FEATURES DO-41(GLASS) 4.5 ± 0.2 Φ 2.5 ± 0.2 MECHANICAL DATA 25.4 ± 1 Φ 0.8± 0.1 • 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 25.4 ± 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 All Dimensions in mm ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(TA=25℃) Symbols Value Units Zener current see table "Characteristics" Power dissipation at TA=50℃ Junction temperature Storage temperature range 1 Ptot W 1) TJ 175 TSTG -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 RthA VF 1) Valid provided that a distance at 8mm from case are kept at ambient temperature Typ Max 170 1.2 1) Units ℃/W V 1N4728A THRU 1N4764A 1W EPITAXIAL ZENER DIODE Electrical Characteristics @TA=25°C unless otherwise specified Max Surge Current 8.3ms Nominal Zener Voltage (Note 2) Test Current VZ @ IZT IZT ZZT @ IZT ZZK @ IZK IZK IR @ VR IZS (V) (mA) ( ) ( ) (mA) (µA) (V) (mA) 1N4728A 1N4729A 1N4730A 1N4731A 1N4732A 3.3 3.6 3.9 4.3 4.7 76 69 64 58 53 10 10 9.0 9.0 8.0 400 400 400 400 500 1.0 1.0 1.0 1.0 1.0 100 100 50 10 10 1.0 1.0 1.0 1.0 1.0 1380 1260 1190 1070 970 1N4733A 1N4734A 1N4735A 1N4736A 1N4737A 5.1 5.6 6.2 6.8 7.5 49 45 41 37 34 7.0 5.0 2.0 3.5 4.0 550 600 700 700 700 1.0 1.0 1.0 1.0 0.5 10 10 10 5.0 5.0 1.0 2.0 3.0 4.0 5.0 890 810 730 660 605 1N4738A 1N4739A 1N4740A 1N4741A 1N4742A 8.2 9.1 10 11 12 31 28 25 23 21 4.5 5.0 7.0 8.0 9.0 700 700 700 700 700 0.5 0.5 0.25 0.25 0.25 5.0 0.5 0.5 0.1 0.1 6.0 7.0 7.6 8.4 9.1 550 500 454 414 380 1N4743A 1N4744A 1N4745A 1N4746A 1N4747A 13 15 16 18 20 19 17 15.5 14 12.5 10 14 16 20 22 700 700 700 750 750 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 9.9 11.4 12.2 13.7 15.2 344 304 285 250 225 1N4748A 1N4749A 1N4750A 1N4751A 1N4752A 22 24 27 30 33 11.5 10.5 9.5 8.5 7.5 23 25 35 40 45 750 750 750 1000 1000 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 16.7 18.2 20.6 22.8 25.1 205 190 170 150 135 1N4753A 1N4754A 1N4755A 1N4756A 1N4757A 36 39 43 47 51 7.0 6.5 6.0 5.5 5.0 50 60 70 80 95 1000 1000 1500 1500 1500 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 27.4 29.7 32.7 35.8 38.8 125 115 110 95 90 1N4758A 1N4759A 1N4760A 1N4761A 1N4762A 56 62 68 75 82 4.5 4.0 3.7 3.3 3.0 110 125 150 175 200 2000 2000 2000 2000 3000 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 42.6 47.1 51.7 56.0 62.2 80 70 65 60 55 1N4763A 1N4764A 91 100 2.8 2.5 250 350 3000 3000 0.25 0.25 0.1 0.1 69.2 76.0 50 45 Type Number (Note 1) Maximum Zener Impedance (Note 3) Leakage Current Note: 1. Type numbers listed have standard tolerance on the nominal zener voltage of ±5%. 2. Measured under thermal equilibrium and DC (IZT) test conditions. 3. The Zener impedance is derived from the 60Hz AC voltage which results when an 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. 1N4728A THRU 1N4764A RATINGS AND CHARACTERISTIC CURVES FIG.1 -- BREAKDOWN CHARACTERISTICS 100 IZ mA 5 15 10 20 25 30 V 80 60 40 20 1N4750 1N4749 1N4748 1N4747 1N4744 1N4741 1N4742 1N4739 1N4735 1N4732 1N4733 1N4731 1N4728 0 VZ FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE W 1.0 0.8 Ptot 0.6 0.4 0.2 0 0 100 200℃ Tamb