FEATURES
● High reliability
● Very sharp reverse characteristic
● Low reverse current level
●Vz-tolerance±5%
APPLICATIONS
● Voltage stabilization
ABSOLUTE MAXIMUM RATINGS
TJ=25℃
Parameter
Power dissipation
Z-current
Junction temperature
Storage temperature range
MAXIMUM THERMAL RESISTANCE
TJ=25℃
Parameter
Junction ambient
ELECTRICAL CHARACTERISTICS
TJ=25℃
Parameter Type Symbol Min Typ Max Unit
Forward voltage VF1.2 V
~ 407 ~
1N4728A thru 1N4764A
Tamb≤50℃Pv 1 W
REVERSE VOLTAGE - 3.3 to 100 VoltsZENER DIODE
Dimensions in inches and (millimeters)
Test Conditions Type Symbol Value Unit
mA
Tj 200 ℃
Iz Pv/Vz
Test Conditions
RthJA
℃
Symbol Value Unit
Tstg -65 ~ +175
IF=200mA
100 K/W
Test Conditions
I=9.5mm(3/8") TL=constant
DO- 41
.107(2.7)
.080(2.0)
.034(0.9)
.028(0.7)
DIA
DIA
.205(5.2)
MAX
1.0(25.4)
MIN.
1.0(25.4)
MIN.
RATING AND CHARACTERISTIC CURVES
Symbol
Vz
IZT
ZZT
IZK
ZZK
IR
VR
IF
VF
~ 408 ~
1N4728A thru 1N4764A
Parameter
Reverse Zener Voltage@ IZT
Reverse current
Breakdown voltage
Forward current
Forward voltage @ IF
Maximum zener impedance @ IZT
Reverse current
Maximum zener impedance @ Izk
Reverse leakage current @ VR
I
IF
VF
I
I
ZT
V
R
V
Z
V
FIG. 1 - ZENER VOLTAGE REGULATOR
FIG.2 - TEMPERATURE COEFFICIENTS
(-55°C to +150°C temperature;90% of the units are in the ranges indicated.)
ZENER VOLTAGE (VOLTS)
TEMPERATURE COEFFICIENT (mV / °C)
+6
+4
+2
0
-2
-4
23 4
5
6 7 8 9 10 11 12
+8
+10
+12
RANG
Vz @ IZT
TEMPERATURE COEFFICIENT (Mv / °C)
ZENER VOLTAGE (VOLTS)
100
2
10 20 30 50 70 100
1
3
5
7
10
20
30
50
70
RANGE
Vz @ IZT
1000
2
0.10.2 0.5 2 50 100
1
5
10
20
50
100
200
500
1 5 10 20
DYNAMIC IMPEANCE (OHMS)
ZENER CURRENT (mA)
FIG.3 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
DYNAMIC IMPEANCE (OHMS)
ZENER CURRENT (mA)
FIG.4 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
1
1000
2
5
10
2
5
10
200
500
1 2 5 30 1003 7 10 20 50 70
TJ=25°C
Iz(ms)=0.1 Iz(dc)
f=60Hz
Iz-1mA
5mA
20mA
1W ZENER DIODES/DO-35/DL-41(MELF)
ZZT @ IZT ZZT @ IZK IR @ VR
mA Ohms Ohms mA μAVolts mA mA
1N4728A 76.0 10 400 1.00 100 1.0 1380 276
1N4729A 69.0 10 400 1.00 100 1.0 1260 252
1N4730A 64.0 9.0 400 1.00 50 1.0 1170 234
1N4731A 58.0 9.0 400 1.00 10 1.0 1085 217
1N4732A 53.0 8.0 500 1.00 10 1.0 965 193
1N4733A 49.0 7.0 550 1.00 10 1.0 890 178
1N4734A 45.0 5.0 600 1.00 10 2.0 810 162
1N4735A 41.0 2.0 700 1.00 10 3.0 730 146
1N4736A 37.0 3.5 700 1.00 10 4.0 660 133
1N4737A 34.0 4.0 700 0.50 10 5.0 605 121
1N4738A 31.0 4.5 700 0.50 10 6.0 550 110
1N4739A 28.0 5.0 700 0.50 10 7.0 500 100
1N4740A 25.0 7.0 700 0.25 10 7.6 454 91
1N4741A 23.0 8.0 700 0.25 5.0 8.4 414 83
1N4742A 21.0 9.0 700 0.25 5.0 9.1 380 76
1N4743A 19.0 10 700 0.25 5.0 9.9 344 69
1N4744A 17.0 14 700 0.25 5.0 11.4 304 61
1N4745A 15.5 16 700 0.25 5.0 12.2 285 57
1N4746A 14.0 20 750 0.25 5.0 13.7 250 50
1N4747A 12.5 22 750 0.25 5.0 15.2 225 45
1N4748A 11.5 23 750 0.25 5.0 16.7 205 41
1N4749A 10.5 25 750 0.25 5.0 18.2 190 37
1N4750A 9.5 35 750 0.25 5.0 20.6 170 34
1N4751A 8.5 40 1000 0.25 5.0 22.8 150 30
1N4752A 7.5 45 1000 0.25 5.0 25.1 135 27
1N4753A 7.0 50 1000 0.25 5.0 27.4 125 25
1N4754A 6.5 60 1000 0.25 5.0 29.7 115 23
1N4755A 6.0 70 1500 0.25 5.0 32.7 110 22
1N4756A 5.5 80 1500 0.25 5.0 35.8 95 16
1N4757A 5.0 95 1500 0.25 5.0 38.8 90 18
1N4758A 4.5 110 2000 0.25 5.0 42.6 80 16
1N4759A 4.0 125 2000 0.25 5.0 47.1 70 14
1N4760A 3.7 150 2000 0.25 5.0 51.7 65 13
1N4761A 3.3 175 2000 0.25 5.0 56.0 60 12
1N4762A 3.0 200 2000 0.25 5.0 62.2 55 11
1N4763A 2.8 250 2000 0.25 5.0 69.2 50 10
1N4764A 2.5 350 2000 0.25 5.0 76.0 45 9.0
NOTE: 1.Suffix "A" Indicates ±5% Tolerance.
OPRERATING AND STORAGE TEMPERATURE -55℃ to +200℃
IZK
Maximum
Surge
Current
IR
Maximum
Regulation
Current IZM
TYPE
Test
Current
IZT
Maximum Zener
Impedance Maximum Reverse
Leakage Current
Nominal
Zener Voltage
VZ @ IZT
Volts
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
24
47
13
15
16
18
75
39
43
51
1N4728A thru 1N4764A
56
63
68
27
30
33
36
20
22
~ 409 ~
82
91
100
