ZM4728 thru ZM4764 Vishay Semiconductor Zener Diodes VZ Range 3.3 to 100V Power Dissipation 1W Glass MELF Mounting Pad Layout 0.157 (4.00) MAX Cathode Mark 0.102 (2.6) 0.094 (2.4) 0.049 (1.25) MIN 0.118 (3.00) MIN 0.022 (0.55) 0.205 (5.2) 0.189 (4.8) 0.256 (6.50) REF Mechanical Data Features Case: MELF Glass Case Weight: approx. 0.25g Packaging Codes/Options: E4/5K per 13" reel (12mm tape), 10K/box 25/1.5K per 7" reel (12mm tape), 12K/box * Silicon Planar Power Zener Diodes * For use in stabilizing and clipping circuits with higher power rating. * Standard Zener voltage tolerance is 10%. Add suffix "A" for 5% tolerance. Other Zener voltages and tolerances are available upon request. * These diodes are also available in the DO-41 case with type designation 1N4728 ... 1N4764 Maximum Ratings & Thermal Characteristics Parameter Ratings at 25C ambient temperature unless otherwise specified. Symbol Value Unit Power Dissipation at Tamb = 25C Ptot 1.0(1) W Thermal Resistance Junction to Ambient Air RJA 170(1) C/W Junction Temperature Tj 200 C Storage Temperature Range TS -65 to +200 C Zener Current (see Table "Characteristics") Note: (1) Valid provided that electrodes are kept at ambient temperature Document Number 88410 03-Jan-02 www.vishay.com 1 ZM4728 thru ZM4764 Vishay Semiconductor Electrical Characteristics (T A = 25C unless otherwise noted) Maximum VF = 1.2V at IF = 200mA Nominal Zener voltage(3) at IZT VZ (V) Test Current IZT (mA) ZZT at IZT () ZZK () IZK (mA) IR (A) ZM4728 3.3 76 10 400 1.0 ZM4729 3.6 69 10 400 ZM4730 3.9 64 9 400 ZM4731 4.3 58 9 ZM4732 4.7 53 8 ZM4733 5.1 49 ZM4734 5.6 45 ZM4735 6.2 ZM4736 6.8 ZM4737 ZM4738 Maximum Zener impedance(1) Maximum reverse leakage current Maximum regulator current(2) VR (V) Surge current at TA = 25C Ir (mA) 100 1.0 1380 276 1.0 100 1.0 1260 252 1.0 50 1.0 1190 234 400 1.0 10 1.0 1070 217 500 1.0 10 1.0 970 193 7 550 1.0 10 1.0 890 178 5 600 1.0 10 2.0 810 162 41 2 700 1.0 10 3.0 730 146 37 3.5 700 1.0 10 4.0 660 133 7.5 34 4.0 700 0.5 10 5.0 605 121 8.2 31 4.5 700 0.5 10 6.0 550 110 ZM4739 9.1 28 5.0 700 0.5 10 7.0 500 100 ZM4740 10 25 7 700 0.25 10 7.6 454 91 ZM4741 11 23 8 700 0.25 5 8.4 414 83 ZM4742 12 21 9 700 0.25 5 9.1 380 76 ZM4743 13 19 10 700 0.25 5 9.9 344 69 ZM4744 15 17 14 700 0.25 5 11.4 304 61 ZM4745 16 15.5 16 700 0.25 5 12.2 285 57 ZM4746 18 14 20 750 0.25 5 13.7 250 50 ZM4747 20 12.5 22 750 0.25 5 15.2 225 45 ZM4748 22 11.5 23 750 0.25 5 16.7 205 41 ZM4749 24 10.5 25 750 0.25 5 18.2 190 38 ZM4750 27 9.5 35 750 0.25 5 20.6 170 34 ZM4751 30 8.5 40 1000 0.25 5 22.8 150 30 ZM4752 33 7.5 45 1000 0.25 5 25.1 135 27 ZM4753 36 7.0 50 1000 0.25 5 27.4 125 25 ZM4754 39 6.5 60 1000 0.25 5 29.7 115 23 Type at at IZM (mA) ZM4755 43 6.0 70 1500 0.25 5 32.7 110 22 ZM4756 47 5.5 80 1500 0.25 5 35.8 95 19 ZM4757 51 5.0 95 1500 0.25 5 38.8 90 18 ZM4758 56 4.5 110 2000 0.25 5 42.6 80 16 ZM4759 62 4.0 125 2000 0.25 5 47.1 70 14 ZM4760 68 3.7 150 2000 0.25 5 51.7 65 13 ZM4761 75 3.3 175 2000 0.25 5 56.0 60 12 ZM4762 82 3.0 200 3000 0.25 5 62.2 55 11 ZM4763 91 2.8 250 3000 0.25 5 69.2 50 10 ZM4764 100 2.5 350 3000 0.25 5 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 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) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature (3) Measured under thermal equilibrium and DC test conditions. www.vishay.com 2 Document Number 88410 03-Jan-02 ZM4728 thru ZM4764 Vishay Semiconductor Ratings and Characteristic Curves (T A = 25C unless otherwise noted) ZM4728...ZM4764 Document Number 88410 03-Jan-02 www.vishay.com 3