DS18007 Rev. 14 - 2 1 of 3 1N4728A - 1N4761A
www.diodes.com ãDiodes Incorporated
1N4728A - 1N4761A
1.0W ZENER DIODE
Characteristic Symbol Value Unit
Zener Current (see Table page 2) IZPd / VZmA
Power Dissipation
Derate Above 50°C (Note 1) Pd1.0
6.67
W
mW/°C
Thermal Resistance - Junction to Ambient Air RqJA 175 °C/W
Forward Voltage @ IF= 200 mA VF1.2 V
Operating and Storage Temperature Range Tj,T
STG -65 to + 200 °C
Note: 1. Valid provided that leads are kept at TL@ 50°C with lead length = 9.5mm (3/8”) from case.
2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see
EU Directive Annex Notes 5 and 7.
Maximum Ratings
Mechanical Data
·1.0 Watt Power Dissipation
·3.3V - 75V Nominal Zener Voltage
·Standard VZTolerance is 5%
·Lead Free Finish, RoHS Compliant (Note 2)
·Case: DO-41
·Case Material: Glass. UL Flammability Classification Rating
94V-0
·Moisture Sensitivity: Level 1 per J-STD-020C
·Terminals: Finish ¾Bright Tin. Solderable per MIL-STD-202,
Method 208
·Polarity: Cathode Band
·Marking: Type Number
·Weight: 0.35 grams (approximate)
A
A
B
C
D
DO-41 Glass
Dim Min Max
A25.40 —
B— 4.70
C— 0.863
D— 2.71
All Dimensions in mm
Features
@ TA= 25°C unless otherwise specified
SPICE MODELS: 1N4728A 1N4729A 1N4730A 1N4731A 1N4732A 1N4733A 1N4734A 1N4735A
1N4736A 1N4737A 1N4738A 1N4739A 1N4740A 1N4741A 1N4742A 1N4743A 1N4744A 1N4745A
1N4746A 1N4747A 1N4748A 1N4749A 1N4750A 1N4751A 1N4752A 1N4753A 1N4754A 1N4755A
1N4756A 1N4757A 1N4758A 1N4759A 1N4760A 1N4761A
DS18007 Rev. 14 - 2 2 of 3 1N4728A - 1N4761A
www.diodes.com
Type
Number
Nominal Zener
Voltage (Note 3)
Test
Current
Maximum Zener Impedance
(Note 4)
Maximum Reverse
Leakage Current
Max Surge
Current
8.3ms
Temperature
Coefficient
@I
ZT
VZ@I
ZT IZT ZZT @I
ZT ZZK @I
ZK IZK IR@V
RIZS
(V) (mA) (W)(W)(mA) (µA) (V) (mA) %/°C
1N4728A 3.3 76 10 400 1.0 100 1.0 1380 -0.08 to -0.05
1N4729A 3.6 69 10 400 1.0 100 1.0 1260 -0.08 to -0.05
1N4730A 3.9 64 9.0 400 1.0 50 1.0 1190 -0.07 to -0.02
1N4731A 4.3 58 9.0 400 1.0 10 1.0 1070 -0.07 to -0.01
1N4732A 4.7 53 8.0 500 1.0 10 1.0 970 -0.03 to +0.04
1N4733A 5.1 49 7.0 550 1.0 10 1.0 890 -0.01 to +0.04
1N4734A 5.6 45 5.0 600 1.0 10 2.0 810 0 to +0.045
1N4735A 6.2 41 2.0 700 1.0 10 3.0 730 +0.01 to +0.055
1N4736A 6.8 37 3.5 700 1.0 10 4.0 660 +0.015 to +0.06
1N4737A 7.5 34 4.0 700 0.5 10 5.0 605 +0.02 to +0.065
1N4738A 8.2 31 4.5 700 0.5 10 6.0 550 0.03 to 0.07
1N4739A 9.1 28 5.0 700 0.5 10 7.0 500 0.035 to 0.075
1N4740A 10 25 7.0 700 0.25 10 7.6 454 0.04 to 0.08
1N4741A 11 23 8.0 700 0.25 5.0 8.4 414 0.045 to 0.08
1N4742A 12 21 9.0 700 0.25 5.0 9.1 380 0.045 to 0.085
1N4743A 13 19 10 700 0.25 5.0 9.9 344 0.05 to 0.085
1N4744A 15 17 14 700 0.25 5.0 11.4 304 0.055 to 0.09
1N4745A 16 15.5 16 700 0.25 5.0 12.2 285 0.055 to 0.09
1N4746A 18 14 20 750 0.25 5.0 13.7 250 0.06 to 0.09
1N4747A 20 12.5 22 750 0.25 5.0 15.2 225 0.06 to 0.09
1N4748A 22 11.5 23 750 0.25 5.0 16.7 205 0.06 to 0.095
1N4749A 24 10.5 25 750 0.25 5.0 18.2 190 0.06 to 0.095
1N4750A 27 9.5 35 750 0.25 5.0 20.6 170 0.06 to 0.095
1N4751A 30 8.5 40 1000 0.25 5.0 22.8 150 0.06 to 0.095
1N4752A 33 7.5 45 1000 0.25 5.0 25.1 135 0.06 to 0.095
1N4753A 36 7.0 50 1000 0.25 5.0 27.4 125 0.06 to 0.095
1N4754A 39 6.5 60 1000 0.25 5.0 29.7 115 0.06 to 0.095
1N4755A 43 6.0 70 1500 0.25 5.0 32.7 110 0.06 to 0.095
1N4756A 47 5.5 80 1500 0.25 5.0 35.8 95 0.06 to 0.095
1N4757A 51 5.0 95 1500 0.25 5.0 38.8 90 0.06 to 0.095
1N4758A 56 4.5 110 2000 0.25 5.0 42.6 80 0.06 to 0.095
1N4759A 62 4.0 125 2000 0.25 5.0 47.1 70 0.06 to 0.095
1N4760A 68 3.7 150 2000 0.25 5.0 51.7 65 0.06 to 0.095
1N4761A 75 3.3 175 2000 0.25 5.0 56.0 60 0.06 to 0.095
Notes: 3. Measured under thermal equilibrium and dc (IZT) test conditions.
4. 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.
Electrical Characteristics @ TA= 25°C unless otherwise specified
Notes: 5. *Add "-A", "-B", or "-T" to the appropriate type number in Table 1. Example: 6.2V Zener = 1N4735A-A.
6. For packaging details, visit our website at http://www.diodes.com/datasheets/ap02008.pdf
DS18007 Rev. 14 - 2 3 of 3 1N4728A - 1N4761A
www.diodes.com
0
0.2
0.4
0.6
0.8
1
.
0
0 40 80 120 160 200
P , TOTAL POWER DISSIPATION (W)
d
T , AMBIENT TEMPERATURE
Fi
g
.1 Power Dissipation vs Ambient Temperature
A
0
2
5
0
0515 20 25 30
l, Lead Length (mm)
Fi
g
.2 T
y
pical Thermal Resistance vs. Lead Len
g
th
10
200
50
100
150
1
10
100
1000
1 10 100
V , ZENER VOLTAGE (V)
Fi
g
.4 T
y
pical Zener Impedance vs. Zener Volta
g
e
Z
I=1mA
Z
2mA
10mA
20mA
5mA
1
10
100
1000
0102030405060
C , DIODE CAPACITANCE (pF)
j
V , ZENER VOLTAGE (V)
Fi
g
.3, Junction Capacitance vs Zener Volta
g
e
Z
f=1MHz
T=25C
A
V=0V
R
V=2V
R
V=5V
R
V = 20V
R
V=30V
R
Ordering Information
Device Packaging Shipping
(Type Number)-A* DO-41 5K/Ammo Pack
(Type Number)-B* DO-41 1K/Bulk
(Note 6)
