Note:
(1) Valid provided that electrodes are kept at ambient temperature.
Features
ZM4728 THRU ZM4764
SILICON PLANAR POWER ZENER DIODES
Silicon Planar Power Zener Diodes
for use in stabilizing and clipping circuits with high power
rating. Standard Zener voltage tolerance is 10%. Add
suffix ๎A๎ for 5% tolerance. Other tolerances available
upon request.
These diodes are also available in DO-41 case with the
type designation 1N4728 thru 1N4764.
These diodes are delivered taped.
Details see ๎Taping๎.
Weight approx. : 0.25g
Absolute Maximum Ratings (Ta=25 )
1
Symbols Values Units
Zener current see Table "Characteristics"
Power dissipation at Tamb=25 Ptot 1 1) W
Junction temperature Tj175
Storage temperature range TS-65 to +175
Note:
(1) Valid provided that electrodes are kept at ambient temperature.
Characteristics at Tamb=25
Symbols Min. Typ. Max. Units
Thermal resistance
junction to ambient Air RthA - - 170 1) K/W
Forward voltage at IF=200mA VF--1.2 V
DIMENSIONS
DIM
inches mm
Note
Min. Max. Min. Max.
A 0.189 0.205 4.8 5.2
B 0.092 0.100 2.35 2.55
C 0.016 - 0.4 -
Notes:
(1) The Zener Impedance is derived from the 60 Hz 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 are kept at ambient temperature.
(3) Measured under thermal equilibrium and DC test conditions.
Type
Nominal
Zener
voltage
range 3)
at IZT
Te s t
current
Maximum Zener Impedance 1) Maximum reverse
leakage current
Surge
current at
TA=25
Maximum
regulator currnet 2)
VzIZT
at IZT
ZZT
ZZK at IZK IRat VRIRIZM
VmA mA uA V mA mA
ZM4728 3.3 76 10 400 1.0 150 1 1375 275
ZM4729 3.6 69 10 400 1.0 100 1 1260 252
ZM4730 3.9 64 9 400 1.0 100 1 1190 234
ZM4731 4.3 58 9 400 1.0 50 1 1070 217
ZM4732 4.7 53 8 500 1.0 10 1 970 193
ZM4733 5.1 49 7 550 1.0 10 1 890 178
ZM4734 5.6 45 5 600 1.0 10 2 810 162
ZM4735 6.2 41 2 700 1.0 10 3 730 146
ZM4736 6.8 37 3.5 700 1.0 10 4 660 133
ZM4737 7.5 34 4.0 700 0.5 10 5 605 121
ZM4738 8.2 31 4.5 700 0.5 10 6 550 110
ZM4739 9.1 28 5.0 700 0.5 10 7 500 100
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
2
RATINGS AND CHARACTERISTIC CURVES
3
