DATA SHEET
SEMICONDUCTOR
1N4728A~1N4764A
Maximum Ratings
Rating
Maximum Steady State Power Dissipation
@ T
L
≤50°C,
Lead Length = 3/8”
Derate Above 50°C
Operating and Storage
Temperature Range
Symbol
P
D
Value
1.0
6.67
T
J
, T
stg
-65 to +200
Unit
W
mW/°C
1.00 ( 25.4) MIN.
.205(5.20)
.160(4.07)
1.00 (25.4 ) MIN.
1 Watt DO-41G Hermetically
Sealed Glass Zener Voltage
Regulators
.034(0.86)
.028(0.72)
°C
.107(2.71)
.080(2.04)
Specification Features
•
•
•
•
•
•
Zener Voltage Range = 3.3 V to 100 V
ESD Rating of Class 3 (>16 KV) per Human Body Model
DO-41G Package
Double Slug Type Construction
Metallurgical Bonded Construction
Oxide Passivated Die
Cathode
AXIAL LEAD
DO41G
Mechanical Characteristics
Case
:
Double slug type, hermetically sealed glass
Finish
:
All external surfaces are corrosion resistant and leads are readily solderable.
Polarity :
Cathode indicated by polarity band
Mounting:
Any
Maximum Lead Temperature for Soldering Purposes
260°C, 1/16” from the case for 10 seconds
Anode
MARKING DIAGRAM
1N
47
xxA
1N47xxA
= Device Code
http://www.yeashin.com
1
REV.03 20121011
1N4728A~1N4764A
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless
otherwise noted. V
F
= 1.2 V Max @ I
F
= 200mA for all types)
Symbol
V
Z
I
ZT
Z
ZT
I
Zk
Z
Zk
I
R
V
R
I
F
V
F
I
r
Parameter
Reverse Zener Voltage @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
Zk
Reverse Leakage Current @ V
R
Reverse Voltage
Forward Current
Forward Voltage @ I
F
Surge Current @ T
A
= 25ºC
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.2 V Max @ I
F
= 200mA for all types)
Zener Voltage
(Note 3 & 4.)
Device
(Note 2.)
Zener Impedance
(Note 5.)
Z
ZT
@ I
ZT
(Ω)
Ω
10
10
9
9
8
7
5
2
3.5
4
4.5
5
7
8
9
Z
ZK
@ I
ZK
(Ω)
Ω
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
(mA)
1
1
1
1
1
1
1
1
1
0.5
0.5
0.5
0.25
0.25
0.25
Leakage Current
I
R
@ V
R
(µA Max)
µ
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
(Volts)
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
I
r
(Note 6.)
Device
Marking
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
V
Z
(Volts)
Min
3.135
3.42
3.705
4.085
4.465
4.845
5.32
5.89
6.46
7.125
7.79
8.645
9.5
10.45
11.4
Nom
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
Max
3.465
3.78
4.095
4.515
4.935
5.355
5.88
6.51
7.14
7.875
8.61
9.555
10.5
11.55
12.6
@ I
ZT
(mA)
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
(mA)
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
2. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
3. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price,
availability and delivery, contact your nearest YEASHIN representative.
4. ZENER VOLTAGE (V
Z
) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
L
) at 30°C
±1°C
and 3/8” lead length.
5. ZENER IMPEDANCE (Z
Z
) DERIVATION
The zener impedance is derived from the 60 cycle AC voltage, which results when an AC current having an RMS value
equal to 10% of the DC zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
.
6. SURGE CURRENT (I
r
) NON-REPETITIVE
The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of ½ square
wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current I
ZT
per JEDEC registration;
however, actual device capability is as described in figure 5 of the General Data DO-41 Glass.
http://www.yeashin.com
2
REV.03 20121011
1N4728A~1N4764A
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.2 V Max @ I
F
= 200mA for all types)
Zener Voltage
(Note 8 & 9.)
Device
(Note 7.)
Zener Impedance
(Note 10.)
Z
ZT
@ I
ZT
(Ω)
Ω
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
Z
ZK
@ I
ZK
(Ω)
Ω
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
(mA)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Leakage Current
I
R
@ V
R
(µA Max)
µ
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
(Volts)
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56
62.2
69.2
76
I
r
(Note 11.)
Device
Marking
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
1N4763A
1N4764A
V
Z
(Volts)
Min
12.35
14.25
15.2
17.1
19
20.9
22.8
25.65
28.5
31.35
34.2
37.05
40.85
44.65
48.45
53.2
58.9
64.6
71.25
77.9
86.45
95
Nom
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
Max
13.65
15.75
16.8
18.9
21
23.1
25.2
28.35
31.5
34.65
37.8
40.95
45.15
49.35
53.55
58.8
65.1
71.4
78.75
86.1
95.55
105
@ I
ZT
(mA)
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7
6.5
6
5.5
5
4.5
4
3.7
3.3
3
2.8
2.5
(mA)
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
1N4763A
1N4764A
7. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
8. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price,
availability and delivery, contact your nearest YEAHSIN representative.
9. ZENER VOLTAGE (V
Z
) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
L
) at 30°C
±1°C
and 3/8” lead length.
10. ZENER IMPEDANCE (Z
Z
) DERIVATION
The zener impedance is derived from the 60 cycle AC voltage, which results when an AC current having an RMS value
equal to 10% of the DC zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
.
11. SURGE CURRENT (I
r
) NON-REPETITIVE
The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of ½ square
wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current I
ZT
per JEDEC registration;
however, actual device capability is as described in figure 5 of the General Data DO-41 Glass.
http://www.yeashin.com
3
REV.03 20121011
DEVICE CHARACTERISTICS
1N4728A~1N4764A
P D , STEADY STATE POWER DISSIPATION (WATTS)
1.25
L = 1"
1
L = 1/8"
L = 3/8"
0.75
L = LEAD LENGTH
TO HEAT SINK
0.5
0.25
0
20
40
60
80
100
120
140
160
180
200
T L, LEAD TEMPERATURE (°C)
Figure 1. Power Temperature Derating Curve
http://www.yeashin.com
4
REV.03 20121011
DEVICE CHARACTERISTICS
1N4728A~1N4764A
a. Range for Units to 12 Volts
θ
VZ , TEMPERATURE COEFFICIENT (mV/
°
C)
θV
Z , TEMPERATURE COEFFICIENT (mV/
°C)
+12
+10
+8
+6
+4
+2
RANGE
0
-2
-4
2
3
4
5
6
7
8
9
10
11
12
V Z , ZENER VOLTAGE (VOLTS)
V Z
@ I
ZT
100
70
50
30
20
RANGE
V Z
@ I
ZT
b. Range for Units to 12 to 100 Volts
10
7
5
3
2
1
10
20
30
50
70
100
V Z , ZENER VOLTAGE (VOLTS)
Figure 2. Temperature Coefficients
(-55
°C
to +150
°C
temperature range; 90% of the units are in the ranges indicated.)
θ
JL , JUNCTION-TO-LEAD THERMAL RESISTANCE (mV/
°C)
150
125
100
75
θ
VZ , TEMPERATURE COEFFICIENT (mV/
°C)
175
+6
+4
V
Z
@ IZ
TA = 25
°C
+2
20 mA
0
0.01 mA
1 mA
-2
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
NOTE:
CHANGES IN ZENER CURRENT DO NOT
NOTE:
EFFECT TEMPERATURE COEFFICIENTS
3
4
5
6
7
8
50
25
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-4
V Z , ZENER VOLTAGE (VOLTS)
L, LEAD LENGTH TO HEAT SINK (INCHES)
Figure 3. Typical Thermal Resistance
versus Lead Length
Figure 4. Effect of Zener Current
100
P pk , PEAK SURGE POWER (WATTA)
70
50
30
20
10
7
5
20% DUTY CYCLE
3
2
1
0.01
10% DUTY CYCLE
5% DUTY CYCLE
11 V - 100 V NONREPETITIVE
3.3 V - 10 V NONREPETITIVE
RECT ANGULAR
WAVEFORM
T J = 25°C PRIOR TO
INITIAL PULSE
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
PW, PULSE WIDTH (ms)
This graph represents 90 percentile data points.
For worst case design characteristics, multiply surge power by 2/3.
Figure 5. Maximum Surge Power
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5
REV.03 20121011
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