ZM4728A to ZM4764A
Document Number 85786
Rev. 1.4, 15-Sep-10
Vishay Semiconductors
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18315
For technical questions within your region, please contact one of the following:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
Zener Diodes
Features
• Silicon planar power Zener diodes
• For use in stablilizing and clipping circuits
with high power rating
• Standard Zener voltage tolerance is ± 5 %
• These diodes are also available in the
DO-41 case with type designation
1N4728A to 1N4764A
• AEC-Q101 qualified
• Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
• Halogen-free according to IEC 61249-2-21
definition
Mechanical Data
Case: MELF DO-213AB (glass)
Weight: approx. 135 mg
Cathode band color: black
Packaging codes/options:
GS18/5K per 13" reel (12 mm tape), 10K/box
GS08/1.5K per 7" reel (12 mm tape), 12K/box
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Note:
1) Valid provided that electrodes are kept at ambient temperature.
Thermal Characteristics
Tamb = 25 °C, unless otherwise specified
Note:
1) Valid provided that electrodes are kept at ambient temperature.
Parameter Test condition Symbol Value Unit
Zener current (see Table "Characteristics")
Power dissipation Ptot 1 1) W
Parameter Test condition Symbol Value Unit
Thermal resistance junction to ambient air RthJA 170 1) K/W
Junction temperature Tj175 °C
Storage temperature Tstg - 65 to + 175 °C
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Document Number 85786
Rev. 1.4, 15-Sep-10
ZM4728A to ZM4764A
Vishay Semiconductors
For technical questions within your region, please contact one of the following:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
Electrical Characteristics
Notes:
1) The zener impedance is derived from the 1 kHz 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.
Part
number
Nominal
Zener
voltage 1)
Test
current Maximum dynamic impedance Maximum reverse
leakage current
Surge
current 3)
Maximum
regulator
current 2)
VZ at IZT IZT ZZT at IZT ZZK at IZK IZK IR
Test voltage
VR
at TA = 25 °C
IR
IZM
VmA Ω Ω mA µA VmA mA
ZM4728A 3.3 76 10 400 1 100 1 1380 276
ZM4729A 3.6 69 10 400 1 100 1 1260 252
ZM4730A 3.9 64 9 400 1 50 1 1190 234
ZM4731A 4.3 58 9 400 1 10 1 1070 217
ZM4732A 4.7 53 8 500 1 10 1 970 193
ZM4733A 5.1 49 7 550 1 10 1 890 178
ZM4734A 5.6 45 5 600 1 10 2 810 162
ZM4735A 6.2 41 2 700 1 10 3 730 146
ZM4736A 6.8 37 3.5 700 1 10 4 660 133
ZM4737A 7.5 34 4 700 0.5 10 5 605 121
ZM4738A 8.2 31 4.5 700 0.5 10 6 550 110
ZM4739A 9.1 28 5 700 0.5 10 7 500 100
ZM4740A 10 25 7 700 0.25 10 7.6 454 91
ZM4741A 11 23 8 700 0.25 5 8.4 414 83
ZM4742A 12 21 9 700 0.25 5 9.1 380 76
ZM4743A 13 19 10 700 0.25 5 9.9 344 69
ZM4744A 15 17 14 700 0.25 5 11.4 304 61
ZM4745A 16 15.5 16 700 0.25 5 12.2 285 57
ZM4746A 18 14 20 750 0.25 5 13.7 250 50
ZM4747A 20 12.5 22 750 0.25 5 15.2 225 45
ZM4748A 22 11.5 23 750 0.25 5 16.7 205 41
ZM4749A 24 10.5 25 750 0.25 5 18.2 190 38
ZM4750A 27 9.5 35 750 0.25 5 20.6 170 34
ZM4751A 30 8.5 40 1000 0.25 5 22.8 150 30
ZM4752A 33 7.5 45 1000 0.25 5 25.1 135 27
ZM4753A 36 7 50 1000 0.25 5 27.4 125 25
ZM4754A 39 6.5 60 1000 0.25 5 29.7 115 23
ZM4755A 43 6 70 1500 0.25 5 32.7 110 22
ZM4756A 47 5.5 80 1500 0.25 5 35.8 95 19
ZM4757A 51 5 95 1500 0.25 5 38.8 90 18
ZM4758A 56 4.5 110 2000 0.25 5 42.6 80 16
ZM4759A 62 4 125 2000 0.25 5 47.1 70 14
ZM4760A 68 3.7 150 2000 0.25 5 51.7 65 13
ZM4761A 75 3.3 175 2000 0.25 5 56 60 12
ZM4762A 82 3 200 3000 0.25 5 62.2 55 11
ZM4763A 91 2.8 250 3000 0.25 5 69.2 50 10
ZM4764A 100 2.5 350 3000 0.25 5 76 45 9
ZM4728A to ZM4764A
Document Number 85786
Rev. 1.4, 15-Sep-10
Vishay Semiconductors
www.vishay.com
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For technical questions within your region, please contact one of the following:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
Typical Characteristics
Tamb = 25 °C, unless otherwise specified
Package Dimensions in millimeters (inches): MELF DO-213AB (glass)
Figure 1. Admissible Power Dissipation vs. Ambient Temperature
18289
W
1.0
0.8
0.6
0.4
0.2
00100
200 °C
T
amb
P
tot
18317
Foot print recommendation:
The gap between plug and glass can
be either on cathode or anode side
Cathode identification
4.00 (0.157)
max.
1.25 (0.049)
min.
ref.
6.50 (0.256)
2.6 (0.102)
2.4 (0.094)
0.55 (0.022)
5.2 (0.205)
4.8 (0.189)
3.00 (0.118)
min.
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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