DL4728A THRU DL4764A 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 A B C MECHANICAL DATA • Case: Molded Glass LL-41 • Terminals: Axial leads, solderable per MIL-STD-750, Method 2026 guaranteed • Polarity: Color band denotes positive end • Mounting position:Any • Weight: 0.25 gram MELF Dim A B C Min 4. 80 2. 40 0. 46 Max 5. 20 2. 67 0. 60 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 +200 ℃ ℃ 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 DL4728A THRU DL4764A 1W EPITAXIAL ZENER DIODE Type Number DL4728A Nominal Zener Voltage (1) Test Current V Z @ IZT IZT V mA 3.3 76 Maximum Zener Impedance (2) ZZT @ IZT ZZK @ IZK 10 400 Maximum Reverse Leakage Current Max Surge Current 8.3ms Maximum Zener Current IZS IZM IZK IR @ VR mA µA V mA 1.0 100 1.0 1380 276 mA DL4729A 3.6 69 10 400 1.0 100 1.0 1260 252 DL4730A 3.9 64 9.0 400 1.0 50 1.0 1190 234 DL4731A 4.3 58 9.0 400 1.0 10 1.0 1070 217 DL4732A 4.7 53 8.0 500 1.0 10 1.0 970 193 DL4733A 5.1 49 7.0 550 1.0 10 1.0 890 178 DL4734A 5.6 45 5.0 600 1.0 10 2.0 810 162 DL4735A 6.2 41 2.0 700 1.0 10 3.0 730 146 DL4736A 6.8 37 3.5 700 1.0 10 4.0 660 133 DL4737A 7.5 34 4.0 700 0.5 10 5.0 605 121 DL4738A 8.2 31 4.5 700 0.5 10 6.0 550 110 DL4739A 9.1 28 5.0 700 0.5 10 7.0 500 100 DL4740A 10 25 7.0 700 0.25 10 7.6 454 91 DL4741A 11 23 8.0 700 0.25 5.0 8.4 414 83 DL4742A 12 21 9.0 700 0.25 5.0 9.1 380 76 DL4743A 13 19 10 700 0.25 5.0 9.9 344 69 61 DL4744A 15 17 14 700 0.25 5.0 11.4 304 DL4745A 16 15.5 16 700 0.25 5.0 12.2 285 57 DL4746A 18 14 20 750 0.25 5.0 13.7 250 50 DL4747A 20 12.5 22 750 0.25 5.0 15.2 225 45 DL4748A 22 11.5 23 750 0.25 5.0 16.7 205 41 DL4749A 24 10.5 25 750 0.25 5.0 18.2 190 38 DL4750A 27 9.5 35 750 0.25 5.0 20.6 170 34 DL4751A 30 8.5 40 1000 0.25 5.0 22.8 150 30 DL4752A 33 7.5 45 1000 0.25 5.0 25.1 135 27 DL4753A 36 7.0 50 1000 0.25 5.0 27.4 125 25 DL4754A 39 6.5 60 1000 0.25 5.0 29.7 115 23 DL4755A 43 6.0 70 1500 0.25 5.0 32.7 110 22 DL4756A 47 5.5 80 1500 0.25 5.0 35.8 95 19 DL4757A 51 5.0 95 1500 0.25 5.0 38.8 90 18 DL4758A 56 4.5 110 2000 0.25 5.0 42.6 80 16 DL4759A 62 4.0 125 2000 0.25 5.0 47.1 70 14 DL4760A 68 3.7 150 2000 0.25 5.0 51.7 65 13 DL4761A 75 3.3 175 2000 0.25 5.0 56.0 60 12 DL4762A 82 3.0 200 3000 0.25 5.0 62.2 55 11 DL4763A 91 2.8 250 3000 0.25 5.0 69.2 50 10 DL4764A 100 2.5 350 3000 0.25 5.0 76.0 45 9.0 Notes: 1. Measured under thermal equilibrium and DC (IZT ) test conditions. 2. 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 I ZK) 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. DL4728A THRU DL4764A RATINGS AND CHARACTERISTIC CURVES FIG.1 -- BREAKDOWN CHARACTERISTICS Iz (mA) Vz (V) 5 100 10 15 20 25 30 80 60 40 20 4750 4749 4748 4747 4744 4742 4741 4739 4735 4731 4733 4732 4728 0 P O W E R D I S S I PAT I O N , Wa t t s FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE 1.0 0.8 0.6 0.4 0.2 0 50 100 150 200 AMBIENT TEMPERATURE, O C 250