ZM4728 thru ZM4764
Vishay Semiconductor
Document Number 88410 www.vishay.com
03-Jan-02 1
Zener Diodes VZ Range 3.3 to 100V
Power Dissipation 1W
Maximum Ratings & Thermal Characteristics Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Symbol Value Unit
Zener Current (see Table “Character istics”)
Power Dissipation at Tamb = 25°C Ptot 1.0(1) W
Thermal Resistance Junction to Ambient Air RθJA 170(1) °C/W
Junction Temperature Tj200 °C
Storage Temperature Range TS–65 to +200 °C
Note: (1) Valid provided that electrodes are kept at ambient temperature
0.022 (0.55)
0.205 (5.2)
0.189 (4.8)
0.102 (2.6)
0.094 (2.4)
Cathode Mark
Glass MELF Mounting Pad Layout
Features
• 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
Mechanical Data
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
0.157 (4.00)
0.118 (3.00) MIN
MAX
0.256 (6.50)
REF
0.049 (1.25) MIN
ZM4728 thru ZM4764
Vishay Semiconductor
www.vishay.com Document Number 88410
203-Jan-02
Electrical Characteristics(TA= 25°C unless otherwise noted) Maximum VF= 1.2V at IF= 200mA
Nominal Maximum Zener impedance(1) Maximum
Zener reverse leakage current Surge Maximum
voltage(3) Test current regulator
at Current ZZT at at at current(2)
IZT IZT at IZT ZZK IZK IRVRTA= 25°C
Type VZ(V) (mA) (Ω)(Ω)(mA) (µA) (V) Ir(mA) IZM (mA)
ZM4728 3.3 76 10 400 1.0 100 1.0 1380 276
ZM4729 3.6 69 10 400 1.0 100 1.0 1260 252
ZM4730 3.9 64 9 400 1.0 50 1.0 1190 234
ZM4731 4.3 58 9 400 1.0 10 1.0 1070 217
ZM4732 4.7 53 8 500 1.0 10 1.0 970 193
ZM4733 5.1 49 7 550 1.0 10 1.0 890 178
ZM4734 5.6 45 5 600 1.0 10 2.0 810 162
ZM4735 6.2 41 2 700 1.0 10 3.0 730 146
ZM4736 6.8 37 3.5 700 1.0 10 4.0 660 133
ZM4737 7.5 34 4.0 700 0.5 10 5.0 605 121
ZM4738 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
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 1KHZAC 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 equilibr ium and DC test conditions.
ZM4728 thru ZM4764
Vishay Semiconductor
Document Number 88410 www.vishay.com
03-Jan-02 3
Ratings and
Characteristic Curves(TA= 25°C unless otherwise noted)
ZM4728...ZM4764
