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Surface Mount Zener Diodes
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
Features
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Glass passivated chip
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Low leakage
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Built-in strain relief
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Low inductance
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High peak reverse power dissipation
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Lead-Free component
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For use in stabilizing and clipping with high power rating
Mechanical Data
Schematic Symbol
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Case: Molded plastic
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Epoxy: UL 94V-0 rate flame retardant
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Lead: Solderable per MIL-STD-750, method 2026
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Polarity: Color band denotes cathode end
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Mounting position: Any
Maximum Ratings
Cathode
Anode
(TA=25℃ unless otherwise noted)
Parameter
Symbol
Value
Unit
PD
1
W
VF
1.2
V
RθJA
170
K/W
Junction temperature range
TJ
-55 to +175
°C
Storage temperature range
TSTG
-55 to +175
°C
DC power dissipation at TL = 50 °C
(1)
Maximum forward voltage at IF = 200 mA
Maximum thermal resistance junction to ambient air
(2)
Notes:
(1)
TL=Lead temperature 3/8″ (9.5mm) from body
(2)
Valid provided that leads are kept at ambient temperature a distance of 10mm from case
SOCAY Electronics Co., Ltd.
Revision November 21, 2013
www.socay.com
1/5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Zener Diodes
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
Electrical Characteristics (TA=25℃ unless otherwise noted)
Nominal Zener
Voltage
Part Number
Maximum Zener Impedance
Maximum
Reverse Leakage
Current
Marking
VZ @IZT
IZT
ZZT @IZT
ZZK @IZK
IZK
(V)
(mA)
(Ω)
(Ω)
(mA)
IR @VR
(μA)
(V)
Maximum
DC Zener
Current
Maximum
Surge
Current
IZM
IRM
(mA)
(mApk)
SMA4728A
28A
3.3
76.0
10.0
400
1.00
100.0
1.0
274.0
1370
SMA4729A
29A
3.6
69.0
10.0
400
1.00
100.0
1.0
251.0
1255
SMA4730A
30A
3.9
64.0
9.0
400
1.00
50.0
1.0
232.0
1160
SMA4731A
31A
4.3
58.0
9.0
400
1.00
10.0
1.0
210.0
1050
SMA4732A
32A
4.7
53.0
8.0
500
1.00
10.0
1.0
192.0
960
SMA4733A
33A
5.1
49.0
7.0
550
1.00
10.0
1.0
177.0
885
SMA4734A
34A
5.6
45.0
5.0
600
1.00
10.0
2.0
161.0
805
SMA4735A
35A
6.2
41.0
2.0
700
1.00
10.0
3.0
146.0
730
SMA4736A
36A
6.8
37.0
3.5
700
1.00
5.0
4.0
133.0
660
SMA4737A
37A
7.5
34.0
4.0
700
0.50
5.0
5.0
121.0
605
SMA4738A
38A
8.2
31.0
4.5
700
0.50
5.0
6.0
110.0
550
SMA4739A
39A
9.1
28.0
5.0
700
0.50
0.5
7.0
100.0
500
SMA4740A
40A
10.0
25.0
7.0
700
0.25
0.5
7.6
91.0
454
SMA4741A
41A
11.0
23.0
8.0
700
0.25
0.1
8.4
83.0
414
SMA4742A
42A
12.0
21.0
9.0
700
0.25
0.1
9.1
76.0
380
SMA4743A
43A
13.0
19.0
10.0
700
0.25
0.1
9.9
69.0
344
SMA4744A
44A
15.0
17.0
14.0
700
0.25
0.1
11.4
61.0
305
SMA4745A
45A
16.0
15.5
16.0
700
0.25
0.1
12.2
57.0
285
SMA4746A
46A
18.0
14.0
20.0
750
0.25
0.1
13.7
50.0
250
SMA4747A
47A
20.0
12.5
22.0
750
0.25
0.1
15.2
45.0
225
SMA4748A
48A
22.0
11.5
23.0
750
0.25
0.1
16.7
41.0
205
SMA4749A
49A
24.0
10.5
25.0
750
0.25
0.1
18.2
38.0
190
SMA4750A
50A
27.0
9.5
35.0
750
0.25
0.1
20.6
34.0
170
SMA4751A
51A
30.0
8.5
40.0
1000
0.25
0.1
22.8
30.0
150
SMA4752A
52A
33.0
7.5
45.0
1000
0.25
0.1
25.1
27.0
135
SMA4753A
53A
36.0
7.0
50.0
1000
0.25
0.1
27.4
25.0
125
SMA4754A
54A
39.0
6.5
60.0
1000
0.25
0.1
29.7
23.0
115
SMA4755A
55A
43.0
6.0
70.0
1500
0.25
0.1
32.7
22.0
110
SMA4756A
56A
47.0
5.5
80.0
1500
0.25
0.1
35.8
19.0
95
SMA4757A
57A
51.0
5.0
95.0
1500
0.25
0.1
38.8
18.0
90
SMA4758A
58A
56.0
4.5
110.0
2000
0.25
0.1
42.6
16.0
80
SMA4759A
59A
62.0
4.0
125.0
2000
0.25
0.1
47.1
14.0
70
SMA4760A
60A
68.0
3.7
150.0
2000
0.25
0.1
51.7
13.0
65
SMA4761A
61A
75.0
3.3
175.0
2000
0.25
0.1
56.0
12.0
60
SMA4762A
62A
82.0
3.0
200.0
3000
0.25
0.1
62.2
11.0
55
SMA4763A
63A
91.0
2.8
250.0
3000
0.25
0.1
69.2
10.0
50
SMA4764A
64A
100.0
2.5
350.0
3000
0.25
0.1
76.0
9.0
45
SOCAY Electronics Co., Ltd.
Revision November 21, 2013
www.socay.com
2/5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Zener Diodes
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
Electrical Characteristics (TA=25℃ unless otherwise noted)
Nominal Zener
Voltage
Part Number
Maximum Zener Impedance
Maximum
Reverse Leakage
Current
Marking
VZ @IZT
IZT
ZZT @IZT
ZZK @IZK
IZK
(V)
(mA)
(Ω)
(Ω)
(mA)
IR @VR
(μA)
(V)
Maximum
DC Zener
Current
Maximum
Surge
Current
IZM
IRM
(mA)
(mApk)
SZ1110A
11Z
110.0
2.3
450.0
4000
0.25
0.1
83.6
8.6
40
SZ1120A
12Z
120.0
2.0
550.0
4500
0.25
0.1
91.2
7.8
37
SZ1130A
13Z
130.0
1.9
700.0
5000
0.25
0.1
98.8
7.0
34
SZ1150A
15Z
150.0
1.7
1000.0
6000
0.25
0.1
114.0
6.4
30
SZ1160A
16Z
160.0
1.6
1100.0
6500
0.25
0.1
121.6
5.8
28
SZ1180A
18Z
180.0
1.4
1200.0
7000
0.25
0.1
136.8
5.2
25
SZ1200A
20Z
200.0
1.2
1900.0
9990
0.25
0.1
152.0
4.7
22
SZ1220A
22Z
220.0
1.0
1600.0
8000
0.25
0.1
167.2
4.0
20
SZ1240A
24Z
240.0
0.9
1800.0
8500
0.25
0.1
182.4
3.8
19
SZ1250A
25Z
250.0
0.9
2000.0
9000
0.25
0.1
190.0
3.6
18
SZ1270A
27Z
270.0
0.8
2100.0
9000
0.25
0.1
205.0
3.3
16
SZ1300A
30Z
300.0
0.8
2300.0
9500
0.25
0.1
228.0
3.0
15
SZ1330A
33Z
330.0
0.7
2500.0
9500
0.25
0.1
250.2
2.7
13
Note:
(1) The type number listed have a standard tolerance on the nominal zener voltage of ± 5 %
(2) The reverse surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC
SOCAY Electronics Co., Ltd.
Revision November 21, 2013
www.socay.com
3/5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Zener Diodes
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 1 - Power Temperature Derating Curve
Figure 2 -Temperature Coefficients v.s. Zener Voltage
100
Temperature Coefficient, θVZ, (mV/°C)
Maximum Power Dissipation, PD (W)
1.0
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
175
200
Range
10
1
10
100
Zener Voltage, VZ(V)
TL - Lead Temperature(°C)
Junction to Lead Thermal Resistance ΘJL,
(°C/W)
Figure 3 - Typical Thermal Resistance v.s. Lead Length
175
150
135
100
75
50
25
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Lead Length to Heatsink, L, (inches)
Figure 4 - Maximum Surge Power
Peak Surge Power, PPK, (W)
100
11V-91V Non-Repetitive
Rectangular Waveform TJ=25°C
Prior to Initial
5% Duty Cycle
10
10% Duty Cycle
20% Duty Cycle
1
0.01
0.1
10
100
1000
Pulse Width, PW , (S)
SOCAY Electronics Co., Ltd.
Revision November 21, 2013
www.socay.com
4/5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
Surface Mount Zener Diodes
SMA4728A - SZ1330A Series
VZ: 3.3 To 330 V
PD: 1 W
Dimensions
Inches
DO-214AC (SMA)
Min
Max
Min
Max
A
0.049
0.064
1.230
1.630
B
0.162
0.179
4.10
4.550
C
0.099
0.109
2.510
2.760
D
0.077
0.089
1.960
2.260
E
0.030
0.060
0.750
1.510
F
-
0.008
-
0.203
G
0.192
0.206
4.87
5.220
H
0.006
0.012
0.152
0.305
I
0.070
-
1.800
-
J
0.082
-
2.100
-
K
-
0.090
-
2.300
L
0.082
-
2.100
-
Cathode Band
SOCAY Electronics Co., Ltd.
Revision November 21, 2013
Millimeters
Dimensions
www.socay.com
5/5
@ SOCAY Electronics Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.