Features
DS18009 Rev. 4 - 4 1 of 3 ZM4728A-ZM4764A
www.diodes.com ã Diodes Incorporated
ZM4728A - ZM4764A
1.0W SURFACE MOUNT ZENER DIODE
·Case: MELF, Glass
·Terminals: Solderable per MIL-STD-202,
Method 208
·Polarity: Cathode Band
·Approx. Weight: 0.25 grams
Mechanical Data
·1.0W Power Dissipation
·3.9V - 100V Nominal Zener Voltages
·Standard VZ Tolerance is 5%
@ TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Zener Current (see Table page 2) IZPd/VzmA
Power Dissipation @ TA = 25°C Pd1W
Thermal Resistance - Junction to Ambient Air RqJA 170 °C/W
Forward Voltage @ IF = 200 mA VF1.2 V
Operating & Storage Temperature Range Tj,T
STG -65 to +200 °C
MELF
Dim Min Max
A4.80 5.20
B2.40 2.60
C0.55 Nominal
All Dimensions in mm
C
A
B
Maximum Ratings
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 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.
DISCONTINUED
Use SMAZ OR DFLZ Series
DS18009 Rev. 4 - 4 2 of 3 ZM4728A-ZM4764A
www.diodes.com
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 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.
Type
Number
Nominal
Zener
Voltage (1)
Test
Current Maximum Zener Impedance (2) Maximum Reverse
Leakage Current
Max Surge
Current
8.3ms
Maximum
Zener
Current
VZ @ IZT IZT ZZT @ IZT ZZK @ IZK IZK IR@V
RIZS IZM
VmAWWmA µA V mA mA
ZM4728A 3.3 76 10 400 1.0 100 1.0 1380 276
ZM4729A 3.6 69 10 400 1.0 100 1.0 1260 252
ZM4730A 3.9 64 9.0 400 1.0 50 1.0 1190 234
ZM4731A 4.3 58 9.0 400 1.0 10 1.0 1070 217
ZM4732A 4.7 53 8.0 500 1.0 10 1.0 970 193
ZM4733A 5.1 49 7.0 550 1.0 10 1.0 890 178
ZM4734A 5.6 45 5.0 600 1.0 10 2.0 810 162
ZM4735A 6.2 41 2.0 700 1.0 10 3.0 730 146
ZM4736A 6.8 37 3.5 700 1.0 10 4.0 660 133
ZM4737A 7.5 34 4.0 700 0.5 10 5.0 605 121
ZM4738A 8.2 31 4.5 700 0.5 10 6.0 550 110
ZM4739A 9.1 28 5.0 700 0.5 10 7.0 500 100
ZM4740A 10 25 7.0 700 0.25 10 7.6 454 91
ZM4741A 11 23 8.0 700 0.25 5.0 8.4 414 83
ZM4742A 12 21 9.0 700 0.25 5.0 9.1 380 76
ZM4743A 13 19 10 700 0.25 5.0 9.9 344 69
ZM4744A 15 17 14 700 0.25 5.0 11.4 304 61
ZM4745A 16 15.5 16 700 0.25 5.0 12.2 285 57
ZM4746A 18 14 20 750 0.25 5.0 13.7 250 50
ZM4747A 20 12.5 22 750 0.25 5.0 15.2 225 45
ZM4748A 22 11.5 23 750 0.25 5.0 16.7 205 41
ZM4749A 24 10.5 25 750 0.25 5.0 18.2 190 38
ZM4750A 27 9.5 35 750 0.25 5.0 20.6 170 34
ZM4751A 30 8.5 40 1000 0.25 5.0 22.8 150 30
ZM4752A 33 7.5 45 1000 0.25 5.0 25.1 135 27
ZM4753A 36 7.0 50 1000 0.25 5.0 27.4 125 25
ZM4754A 39 6.5 60 1000 0.25 5.0 29.7 115 23
ZM4755A 43 6.0 70 1500 0.25 5.0 32.7 110 22
ZM4756A 47 5.5 80 1500 0.25 5.0 35.8 95 19
ZM4757A 51 5.0 95 1500 0.25 5.0 38.8 90 18
ZM4758A 56 4.5 110 2000 0.25 5.0 42.6 80 16
ZM4759A 62 4.0 125 2000 0.25 5.0 47.1 70 14
ZM4760A 68 3.7 150 2000 0.25 5.0 51.7 65 13
ZM4761A 75 3.3 175 2000 0.25 5.0 56.0 60 12
ZM4762A 82 3.0 200 3000 0.25 5.0 62.2 55 11
ZM4763A 91 2.8 250 3000 0.25 5.0 69.2 50 10
ZM4764A 100 2.5 350 3000 0.25 5.0 76.0 45 9.0
Electrical Characteristics @ TA = 25°C unless otherwise specified
DISCONTINUED
Use SMAZ OR DFLZ Series
