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1N5220...1N5267  
Silicon Planar Zener Diodes  
Standard Zener voltage tolerance is ± 20%.  
Add suffix "A" for ± 10% Tolerance, suffix  
"B" for ± 5% tolerance, suffix "C" for ± 2%  
tolerance, Other tolerance, non standard  
and higher Zener voltages are upon request.  
Max. 0.5  
Max. 0.45  
Min. 27.5  
Max. 3.9  
Min. 27.5  
Min. 27.5  
Max. 2.9  
Min. 27.5  
Max. 1.9  
Max. 1.9  
Black  
Cathode Band  
Black  
Cathode Band  
Black  
Part No.  
Black  
"ST" Brand  
Black  
Part No.  
XXX  
ST  
XXX  
Glass Case DO-34  
Dimensions in mm  
Glass Case DO-35  
Dimensions in mm  
Absolute Maximum Ratings (Ta = 25℃)  
Parameter  
Symbol  
Ptot  
Value  
Unit  
mW  
Power Dissipation  
500  
175  
Junction Temperature  
Storage Temperature Range  
Tj  
℃
℃
Tstg  
- 65 to + 175  
Thermal Characteristics  
Parameter  
Symbol  
RθJA  
Max.  
300  
Unit  
Thermal Resistance Junction to Ambient 1)  
1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.  
℃/W  
®
1 / 3  
Dated: 24/05/2022 Rev: 02  
1N5220...1N5267  
Characteristics at Ta = 25℃ (VF max : 1.1 V at IF = 200 mA)  
Temp. Coefficient of  
Zener Voltage  
Zener Voltage Range 1)  
Dynamic Resistance  
ZZT ZZK  
Max. (Ω) Max. (Ω)  
Reverse Current  
Type  
VZnom  
(V)  
2.2  
2.4  
2.5  
2.7  
2.8  
3
VZT  
at lZT  
(mA)  
20  
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
at IZK  
(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  
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  
0.25  
IR  
Max. (µA)  
100  
100  
100  
75  
75  
50  
25  
15  
10  
5
at VR  
(V)  
1
TKVZ  
Min. (V)  
2.09  
2.28  
2.38  
2.57  
2.66  
2.85  
3.14  
3.42  
3.71  
4.09  
4.47  
4.85  
5.32  
5.7  
Max. (V)  
2.31  
2.52  
2.62  
2.83  
2.94  
3.15  
3.46  
3.78  
4.09  
4.51  
4.93  
5.35  
5.88  
6.3  
%/K  
1N5220B  
1N5221B  
1N5222B  
1N5223B  
1N5224B  
1N5225B  
1N5226B  
1N5227B  
1N5228B  
1N5229B  
1N5230B  
1N5231B  
1N5232B  
1N5233B  
1N5234B  
1N5235B  
1N5236B  
1N5237B  
1N5238B  
1N5239B  
1N5240B  
1N5241B  
1N5242B  
1N5243B  
1N5244B  
1N5245B  
1N5246B  
1N5247B  
1N5248B  
1N5249B  
1N5250B  
1N5251B  
1N5252B  
1N5253B  
1N5254B  
1N5255B  
1N5256B  
1N5257B  
1N5258B  
1N5259B  
1N5260B  
1N5261B  
1N5262B  
1N5263B  
1N5264B  
1N5265B  
1N5266B  
1N5267B  
30  
30  
30  
30  
30  
29  
28  
24  
23  
22  
19  
17  
11  
7
1150  
1200  
1250  
1300  
1400  
1600  
1600  
1700  
1900  
2000  
1900  
1600  
1600  
1600  
1000  
750  
<-0.085  
<-0.085  
<-0.085  
<-0.080  
<-0.080  
<-0.075  
<-0.070  
<-0.065  
<-0.060  
<-0.055  
<0.030  
<0.030  
<+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  
<+0.091  
<+0.092  
<+0.093  
<+0.094  
<+0.095  
<+0.095  
<+0.096  
<+0.096  
<+0.097  
<+0.097  
<+0.097  
<+0.098  
1
1
1
1
1
3.3  
3.6  
3.9  
4.3  
4.7  
5.1  
5.6  
6
1
1
1
1
5
2
5
2
5
3
5
3.5  
4
6.2  
6.8  
7.5  
8.2  
8.7  
9.1  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
22  
24  
25  
27  
28  
30  
33  
36  
39  
43  
47  
51  
56  
60  
62  
68  
75  
5.89  
6.46  
7.13  
7.79  
8.27  
8.65  
9.5  
6.51  
7.14  
7.87  
8.61  
9.13  
9.55  
10.5  
11.55  
12.6  
13.65  
14.7  
15.75  
16.8  
17.85  
18.9  
19.95  
21  
7
5
5
3
5
6
500  
3
6
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  
49  
58  
70  
80  
93  
105  
125  
150  
170  
185  
230  
270  
600  
3
600  
3
8
10.45  
11.4  
12.35  
13.3  
14.25  
15.2  
16.15  
17.1  
18.05  
19  
600  
2
8.4  
9.1  
9.9  
10  
11  
12  
13  
14  
14  
15  
17  
18  
19  
21  
21  
23  
25  
27  
30  
33  
36  
39  
43  
46  
47  
52  
56  
600  
1
600  
0.5  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
0.1  
600  
8.5  
7.8  
7.4  
7
600  
600  
600  
600  
6.6  
6.2  
5.6  
5.2  
5
600  
600  
20.9  
22.8  
23.75  
25.65  
26.6  
28.5  
31.35  
34.2  
37.05  
40.85  
44.65  
48.45  
53.2  
57  
23.1  
25.2  
26.25  
28.35  
29.4  
31.5  
34.65  
37.8  
40.95  
45.15  
49.35  
53.55  
58.8  
63  
600  
600  
600  
4.6  
4.5  
4.2  
3.8  
3.4  
3.2  
3
600  
600  
600  
700  
700  
800  
900  
2.7  
2.5  
2.2  
2.1  
2
1000  
1100  
1300  
1400  
1400  
1600  
1700  
58.9  
64.6  
71.25  
65.1  
71.4  
78.75  
1.8  
1.7  
1) Tested with pulses tp = 20 ms.  
®
2 / 3  
Dated: 24/05/2022 Rev: 02  
1N5220...1N5267  
Electrical Characteristics Curves  
Power Dissipation vs Ambient Temperature  
600  
500  
400  
300  
200  
100  
0
0
25  
50  
75  
100  
125  
150  
175  
200  
O
Ambient Temperature: Ta ( C)  
®
3 / 3  
Dated: 24/05/2022 Rev: 02