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Data Sheet  
½ Watt  
ZENER DIODES (2.4V to 200V)  
Mechanical Dimensions  
Description  
JEDEC  
D0-35  
.120  
.200  
1.00 Min.  
.060  
.090  
.018  
.022  
Features  
n WIDE VOLTAGE RANGE  
n 5 & 10% VOLTAGE  
TOLERANCES AVAILABLE  
n MEETS UL SPECIFICATION 94V-0  
Maximum Ratings  
1N5221...5281 Series  
............................................. 500 ...............................................  
Units  
DC Power Dissipation with T = > = 75 ...P  
mW  
°C  
L
D
Lead Length = .375 Inches  
°C  
Derate Above 50 °C  
mW /  
°C  
.............................................  
4
...............................................  
......................................... -65 to 100 ..........................................  
Operating & Storage Temperature Range...TJ, TSTRG  
Temperature Coefficients vs. Voltage  
Typical Junction Capacitance  
Steady State Power Derating  
1 V Bias  
0 V Bias  
50% Vz Bias  
Lead Temperature (°C)  
Zener Voltage (V)  
Zener Voltage (V)  
Zener Current vs. Zener Voltage  
Zener Voltage (V)  
Page 12-2  
Data Sheet  
½ Watt  
ZENER DIODES (2.4V to 200V)  
NOTES: 1. For 10% Tolerance on Zener Voltage, Specify Suffix ‘‘A’’. For 5% Tolerance,  
Specify Suffix ‘‘B’’. (Example: 1N5230B = 4.7V +/- 5%)  
°C  
2. TA = 25 unless otherwise specified. Measurements made at Thermal Equilibrium.  
Lead Length = .375". Thermal Resistance of Heat Sink = 30°C / W, VF = 1.1V Max. @ IF = 200mA  
Electrical Characteristics @ 25OC.  
Max. Zener Impedance  
Max. Reverse  
Max.  
Part #  
Jedec Type #  
Nominal Zener  
Voltage,  
Test  
Current  
IZT (mA)  
Leakage Current @ VR  
Zener Voltage  
Z
@ IZT ZZK @ IZK = 0.25mA  
Temp. Coeff. (% /oC)  
ZT (Ω)  
VR (V)  
VZ (V)  
IR (µA)  
(Ω)  
1N5221A or B  
1N5222A or B  
1N5223A or B  
1N5224A or B  
1N5225A or B  
1N5226A or B  
1N5227A or B  
1N5228A or B  
1N5229A or B  
1N5230A or B  
1N5231A or B  
1N5232A or B  
1N5233A or B  
1N5234A or B  
1N5235A or B  
1N5236A or B  
1N5237A or B  
1N5238A or B  
1N5239A or B  
1N5240A or B  
1N5241A or B  
1N5242A or B  
1N5243A or B  
1N5244A or B  
1N5245A or B  
1N5246A or B  
1N5247A or B  
1N5248A or B  
1N5249A or B  
1N5250A or B  
1N5251A or B  
1N5252A or B  
1N5253A or B  
1N5254A or B  
1N5255A or B  
2.4  
2.5  
2.7  
2.8  
3.0  
3.3  
3.6  
3.9  
4.3  
4.7  
5.1  
5.6  
6.0  
6.2  
6.8  
7.5  
8.2  
8.7  
9.1  
10  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
9.5  
9.0  
8.5  
7.8  
7.4  
7.0  
6.6  
6.2  
5.6  
5.2  
5.0  
4.6  
4.5  
30  
30  
30  
30  
29  
28  
24  
23  
22  
19  
17  
11  
7
1200  
1250  
1300  
1400  
1600  
1600  
1700  
1900  
2000  
1900  
1600  
1600  
1600  
1000  
750  
100  
100  
75  
75  
50  
25  
15  
10  
5
1
1
-0.085  
-0.085  
1
-0.08  
1
-0.08  
1
-0.075  
1
-0.07  
1
-0.065  
1
-0.06  
1
+/- 0.055  
+/- 0.03  
+/- 0.03  
+ 0.038  
+ 0.038  
+ 0.045  
+ 0.050  
+ 0.058  
+ 0.062  
+ 0.065  
+ 0.068  
+ 0.075  
+ 0.076  
+ 0.077  
+ 0.079  
+ 0.082  
+ 0.082  
+ 0.083  
+ 0.084  
+ 0.085  
+ 0.086  
+ 0.086  
+ 0.087  
+ 0.088  
+ 0.089  
+ 0.090  
+ 0.091  
5
2
5
2
5
3
5
3.5  
4
7
5
5
5
5
6
6
500  
3
8
500  
3
6.5  
6.5  
7
8
600  
3
10  
17  
22  
30  
13  
15  
16  
17  
19  
21  
23  
25  
29  
33  
35  
41  
44  
600  
3
600  
3
8
11  
600  
2
8.4  
9.1  
9.9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
21  
21  
12  
600  
1
13  
600  
.5  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
14  
600  
15  
600  
16  
600  
17  
600  
18  
600  
19  
600  
20  
600  
22  
600  
24  
600  
25  
600  
27  
600  
28  
600  
Page 12-3  
Data Sheet  
½ Watt  
ZENER DIODES (2.4V to 200V)  
NOTES: 1. For 10% Tolerance on Zener Voltage, Specify Suffix ‘‘A’’. For 5% Tolerance,  
Specify Suffix ‘‘B’’. (Example: 1N5230B = 4.7V +/- 5%)  
2. TA = 25°C unless otherwise specified. Measurements made at Thermal Equilibrium.  
Lead Length = .375". Thermal Resistance of Heat Sink = 30°C / W, VF = 1.1V Max. @ IF = 200mA  
Electrical Characteristics @ 25OC.  
Max. Zener Impedance  
Max. Reverse  
Max.  
Part #  
Jedec Type #  
Nominal Zener  
Voltage,  
Test  
Current  
IZT (mA)  
Zener Voltage  
Leakage Current @ VR  
Z
@ IZT ZZK @ IZK = 0.25mA  
Temp. Coeff. (% /oC)  
IR (µA)  
VZ (V)  
ZT (Ω)  
(Ω)  
VR (V)  
1N5256A or B  
1N5257A or B  
1N5258A or B  
1N5259A or B  
1N5260A or B  
1N5261A or B  
1N5262A or B  
1N5263A or B  
1N5264A or B  
1N5265A or B  
1N5266A or B  
1N5267A or B  
1N5268A or B  
1N5269A or B  
1N5270A or B  
1N5271A or B  
1N5272A or B  
1N5273A or B  
1N5274A or B  
1N5275A or B  
1N5276A or B  
1N5277A or B  
1N5278A or B  
1N5279A or B  
1N5280A or B  
1N5281A or B  
30  
33  
4.2  
3.8  
3.4  
3.2  
3.0  
2.7  
2.5  
2.2  
2.1  
2.0  
1.8  
1.7  
1.5  
1.4  
1.4  
1.3  
1.1  
1.0  
0.95  
0.9  
0.85  
0.8  
0.74  
0.68  
0.66  
0.65  
49  
58  
600  
700  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
.1  
23  
25  
+ 0.091  
+ 0.092  
+ 0.093  
+ 0.094  
+ 0.095  
+ 0.095  
+ 0.096  
+ 0.096  
+ 0.097  
+ 0.097  
+ 0.097  
+ 0.098  
+ 0.098  
+ 0.099  
+ 0.099  
+ 0.11  
36  
70  
700  
27  
39  
80  
93  
800  
900  
30  
43  
33  
47  
105  
125  
150  
170  
185  
230  
270  
330  
370  
400  
500  
750  
900  
1100  
1300  
1500  
1700  
1900  
2200  
2400  
2500  
1000  
1100  
1300  
1400  
1400  
1600  
1700  
2000  
2200  
2300  
2600  
3000  
4000  
4500  
4500  
5000  
5500  
5500  
6000  
6500  
7000  
36  
51  
39  
56  
43  
60  
46  
62  
47  
68  
52  
75  
56  
82  
62  
87  
68  
91  
69  
100  
110  
120  
130  
140  
150  
160  
170  
180  
190  
200  
76  
84  
+ 0.11  
91  
+ 0.11  
99  
+ 0.11  
106  
114  
122  
129  
137  
144  
152  
+ 0.11  
+ 0.11  
+ 0.11  
+ 0.11  
+ 0.11  
+ 0.11  
+ 0.11  
Page 12-4