1.0W Zener Diode
COMCHIP
www.comchiptech.com
1N4728A thru 1N4764A
Nominal Zener Voltage: 3.3 to 100V
Power Dissipation: 1.0W
Features
- 1.0 Watt Power Dissipation
- 3.3V - 100V Nominal Zener Voltage
- Standard V
Z
Tolerance is 5%
DO-41 Glass
1.0 (25.4)
Min.
0.107 (2.71)
Max.
Mechanical Data
- Case: DO-41, Glass
- Terminals: Solderable per MIL-STD-202,
Method 208
- Polarity: Cathode Band
- Approx. Weight: 0.35 grams
0.185 (4.7)
Max.
1.0 (25.4)
Min.
0.034 (0.863)
Max.
Dimensions in inches and (millimeters)
Maximum Ratings
@ T
A
= 25°C unless otherwise specified
Symbol
I
Z
(Note 1)
P
d
R
qJA
V
F
T
j
, T
STG
Value
Pd / V
Z
1.0
6.67
175
1.2
-65 to + 200
Unit
mA
W
mW/°C
°C/W
V
°C
Characteristic
Zener Current (see Table page 2)
Power Dissipation
Derate Above 50°C
Thermal Resistance - Junction to Ambient Air
Forward Voltage @ I
F
= 200 mA
Operating and Storage Temperature Range
Note:
1. Valid provided that leads are kept at T
L
@ 50°C with lead length = 9.5mm (3/8”) from case.
MDS0312003A
Page 1
1.0W Zener Diode
Electrical Characteristics
Nominal Zener
Voltage (Note 2)
V
Z
@ I
ZT
(V)
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
1N4762A
1N4763A
1N4764A
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
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
@ T
A
= 25°C unless otherwise specified
COMCHIP
www.comchiptech.com
Type
Number
Test
Current
I
ZT
(mA)
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
Maximum Zener Impedance
(Note 3)
Z
ZT
@ I
ZT
(W)
10
10
9.0
9.0
8.0
7.0
5.0
2.0
3.5
4.0
4.5
5.0
7.0
8.0
9.0
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
(W)
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
I
ZK
(mA)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
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
0.25
0.25
0.25
Maximum Reverse
Leakage Current
I
R
(µA)
100
100
50
10
10
10
10
10
10
10
10
10
10
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
@ V
R
(V)
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
7.6
8.4
9.1
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
56.0
62.2
69.2
76.0
Max Surge
Current
8.3ms
I
ZS
(mA)
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
Temperature
Coefficient
@ I
ZT
%/°C
-0.08 to -0.05
-0.08 to -0.05
-0.07 to -0.02
-0.07 to -0.01
-0.03 to +0.04
-0.01 to +0.04
0 to +0.045
+0.01 to +0.055
+0.015 to +0.06
+0.02 to +0.065
0.03 to 0.07
0.035 to 0.075
0.04 to 0.08
0.045 to 0.08
0.045 to 0.085
0.05 to 0.085
0.055 to 0.09
0.055 to 0.09
0.06 to 0.09
0.06 to 0.09
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
0.06 to 0.095
¾
¾
¾
Notes:
2. Measured under thermal equilibrium and dc (I
ZT
) test conditions.
3. 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 (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at two points to insure a
sharp knee on the breakdown curve and to eliminate unstable units.
MDS0312003A
Page 2
1.0W Zener Diode
COMCHIP
www.comchiptech.com
Ratings and Characteristic Curves
(TA = 25°C unless otherwise noted)
1.0
P
d
, TOTAL POWER DISSIPATION (W)
250
0.8
200
0.6
150
0.4
100
0.2
50
0
0
40
80
120
160
200
0
0
30
15
25
20
10
l, Lead Length (mm)
Fig. 2 Typical Thermal Resistance vs. Lead Length
5
T
A
, AMBIENT TEMPERATURE
Fig.1 Power Dissipation vs Ambient Temperature
1000
f = 1MHz
T
A
= 25C
1000
I
Z
= 1mA
C
j
, DIODE CAPACITANCE (pF)
2mA
100
V
R
= 0V
V
R
= 2V
V
R
= 5V
V
R
= 20V
100
5mA
10mA
20mA
10
V
R
= 30V
10
1
0
10
20
30
40
50
60
V
Z
, ZENER VOLTAGE (V)
Fig.3, Junction Capacitance vs Zener Voltage
1
1
10
100
V
Z
, ZENER VOLTAGE (V)
Fig. 4 Typical Zener Impedance vs. Zener Voltage
MDS0312003A
Page 2
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