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1N52-SERIES  
ZENER DIODES  
Zener Voltage:2.4-56V Peak Pulse Power:500mW  
FEATURE  
Low zener impedance  
DO-35(GLASS)  
Low regulation factor  
Glass passivated junction  
High temperature soldering guaranteed:  
260 C/10S/9.5mm lead length at 5 lbs tension  
1.0 2(26.0)  
MIN.  
0.079(2.0)  
MAX  
MECHANICAL DATA  
0.165 (4.2)  
MAX  
Case: JEDEC DO-35(GLASS) molded glass body  
Terminals: Plated axial leads, solderable per MIL-STD 750,  
method 2026  
1.0 2(26.0)  
MIN.  
Polarity: Color band denotes cathode end  
Mounting Position: Any  
0.020(0.52)  
TYP  
Weight: 0.05 ounce,0.14 grams  
Dimensions in inches and (millimeters)  
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS  
Ratings at 25 C ambient temperature unless otherwise specified.  
SYMBOLS  
VALUE  
UNITS  
Zener Current see Table Characteristics  
Power Dissipation at Tamb=25 C(Note 1)  
Junction Temperature  
mW  
C
Ptot  
Tj  
500  
200  
Storage Temperature Range  
C
T
STG  
-65 to + 200  
0.3  
K/mW  
Thermal resistance junction ambient(Note 1)  
Forward voltage at IF=200mA  
R
qJA  
V
V
F
1.1  
Note 1: Valid provided that leads at a distance of 10mm from case are kept at ambient temperature  
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ELECTRICAL CHARACTERISTICS (at TA=25 C unless otherwise noted)  
Nominal  
Zener  
Voltage  
Vz@IZT  
(Volts)  
Maximum  
Regulator  
Current  
IZM  
Maximum Reverse  
Leakage Current  
Maximum Zener  
Impedance  
Test  
Current  
IZT  
Typical  
Temperature  
Coefficient  
Device Type  
@VR  
IR  
ZZT@IZT  
ZZK@IZK=0.25mA  
(mA)  
u A  
Ohms  
30  
30  
30  
30  
29  
28  
24  
23  
22  
19  
17  
11  
7
Ohms  
1200  
1250  
1300  
1400  
1600  
1600  
1700  
1900  
2000  
1900  
1600  
1600  
1600  
1000  
750  
mA  
191  
182  
168  
162  
151  
138  
126  
115  
106  
97  
89  
81  
76  
73  
67  
61  
55  
52  
50  
45  
41  
38  
35  
32  
30  
28  
27  
25  
24  
23  
21.2  
19.1  
18.2  
16.8  
16.2  
15.1  
13.8  
12.6  
11.5  
10.6  
9.7  
8.9  
8.1  
(%/ C)  
-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  
+0.085  
+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  
Volts  
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  
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  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
22  
24  
25  
27  
28  
30  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
100  
100  
75  
75  
50  
25  
15  
10  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
1.0  
2.0  
2.0  
3.0  
3.5  
4.0  
5.0  
6.0  
6.5  
6.5  
7.0  
8.0  
8.4  
9.1  
9.9  
10  
11  
12  
13  
14  
14  
15  
17  
18  
19  
21  
21  
23  
25  
27  
30  
33  
5.0  
5.0  
5.0  
5.0  
5.0  
5.0  
3.0  
3.0  
3.0  
3.0  
3.0  
3.0  
2.0  
1.0  
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  
7
5
6
8
500  
500  
600  
20  
20  
20  
20  
20  
20  
8
10  
17  
22  
30  
13  
15  
16  
17  
19  
21  
23  
25  
29  
33  
35  
41  
44  
49  
58  
70  
80  
93  
150  
125  
150  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
600  
700  
700  
800  
900  
1000  
1100  
1300  
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  
4.2  
3.8  
3.4  
3.2  
3.0  
2.7  
2.5  
2.2  
33  
36  
39  
43  
47  
51  
56  
36  
39  
43  
Note 1: Suffix “B” indicate +5% tolerance  
www.shunyegroup.com  
RATINGS AND CHARACTERISTIC CURVES 1N52 SERIES  
Breakdown characteristics  
5
10  
15  
20  
25  
30  
mA  
50  
40  
30  
20  
10  
0
V
Test Current  
Iz=20mA  
Vz,ZENER VOLTAGE,volts  
Admissible power dissipation versus ambient temperature  
Valid provided that leads are kept at ambient temperature at a distance of 10mm from case  
500  
400  
300  
200  
100  
0
0
50  
100  
150  
200  
250  
AMBIENT TEMPERATURE, C  
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