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®
Li censed b y ON Semico nductor ,  
A trademark o f semico nductor  
Components I ndustri es, LLC for  
Zener Tec hnolo gy and Pro ducts .  
TAK CHEONG  
500 mW DO-35 Hermetically  
Sealed Glass Zener Voltage  
Regulators  
AXIAL LEAD  
DO35  
Maximum Ratings (Note 1)  
Rating  
Symbol  
Value  
Units  
Maximum Steady State Power Dissipation  
PD  
500  
mW  
@TL≤75℃, Lead Length = 3/8”  
L
52  
xx  
B
Derate Above 75℃  
Operating and Storage  
Temperature Range  
4.0  
mW/℃  
TJ, Tstg  
-65 to +200  
°C  
Note 1: Some part number series have lower JEDEC registered ratings.  
L
= Logo  
52xxB  
= 1N52xxB Device Code  
Specification Features:  
.
.
.
.
.
.
.
Zener Voltage Range = 2.4V to 200V  
ESD Rating of Class 3 (>6 KV) per Human Body Model  
DO-35 Package (DO-204AH)  
Double Slug Type Construction  
Metallurgical Bonded Construction  
RoHS Compliant  
Solder Hot Dip Tin (Sn) Lead Finish  
Cathode  
Anode  
Specification Features:  
Case  
: Double slug type, hermetically sealed glass  
Finish  
: All external surfaces are corrosion resistant and leads are readily solderable  
Polarity : Cathode indicated by polarity band  
Mounting: Any  
Number:DB-076  
Sep. 2010 / F  
Page 1  
®
Li censed b y ON Semico nductor ,  
A trademark o f semico nductor  
Components I ndustri es, LLC for  
Zener Tec hnolo gy and Pro ducts .  
TAK CHEONG  
ELECTRICAL CHARACTERISTICS (TA = 25℃ unless otherwise noted. )  
Zener Voltage (Note 3.)  
Zener Impedance (Note 4.)  
Leakage Current  
IR @ VR  
θVZ  
(Note 5.)  
Device  
Device  
VZ (Volts)  
@IZT  
ZZT @IZT  
ZZK @IZK  
(Note 2.)  
Marking  
Min  
Nom  
Max  
(mA)  
(Ω)  
(Ω)  
(mA)  
(uA Max)  
(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  
1N5253B  
1N5254B  
1N5255B  
1N5256B  
1N5257B  
1N5258B  
1N5259B  
1N5260B  
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  
1N5253B  
1N5254B  
1N5255B  
1N5256B  
1N5257B  
1N5258B  
1N5259B  
1N5260B  
2.280  
2.375  
2.565  
2.660  
2.850  
3.135  
3.420  
3.705  
4.085  
4.465  
4.845  
5.320  
5.700  
5.890  
6.460  
7.125  
7.790  
8.265  
8.645  
9.500  
10.45  
11.40  
12.35  
13.30  
14.25  
15.20  
16.15  
17.10  
18.05  
19.00  
20.90  
23.75  
25.65  
26.60  
28.50  
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  
2.520  
2.625  
2.835  
2.940  
3.150  
3.465  
3.780  
4.095  
4.515  
4.935  
5.355  
5.880  
6.300  
6.510  
7.140  
7.875  
8.610  
9.135  
9.555  
10.500  
11.55  
12.60  
13.65  
14.70  
15.75  
16.80  
17.85  
18.90  
19.95  
21.00  
23.10  
26.25  
28.35  
29.40  
31.50  
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
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  
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  
100  
100  
75  
75  
50  
25  
15  
10  
5
1
1
-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  
+0.089  
+0.090  
+0.091  
+0.091  
1
1
1
1
1
1
1
5
2
5
2
5
3
5
3.5  
4
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  
35  
41  
44  
49  
600  
3
600  
3
8
11  
600  
2
8.4  
9.1  
9.9  
10  
11  
12  
13  
14  
14  
15  
17  
19  
21  
21  
23  
12  
600  
1
13  
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  
14  
600  
15  
8.5  
7.8  
7.4  
7
600  
16  
600  
17  
600  
18  
600  
19  
6.6  
6.2  
5.6  
5
600  
20  
600  
22  
600  
25  
600  
27  
4.6  
4.5  
4.2  
600  
28  
600  
30  
600  
31.35  
34.20  
37.05  
40.85  
33  
36  
39  
43  
34.65  
37.80  
40.95  
45.15  
3.8  
3.4  
3.2  
3.0  
58  
70  
80  
93  
700  
700  
800  
800  
0.25  
0.25  
0.25  
0.25  
0.1  
0.1  
0.1  
0.1  
25  
27  
30  
33  
+0.092  
+0.093  
+0.094  
+0.095  
VF =1.1V Max @IF = 200mA for 30V below types, VF = 2.0V Max @IF = 200mA for 30~56V types, VF = 3.0V Max @IF = 200mA for 60V  
above types  
Number:DB-076  
Sep. 2010 / F  
Page 2  
®
Li censed b y ON Semico nductor ,  
A trademark o f semico nductor  
Components I ndustri es, LLC for  
Zener Tec hnolo gy and Pro ducts .  
TAK CHEONG  
ELECTRICAL CHARACTERISTICS (TA = 25℃ unless otherwise noted. )  
Zener Voltage (Note 2.)  
Zener Impedance (Note 3.)  
Leakage Current  
IR @ VR  
θVZ  
Device  
Device  
(Note 4.)  
VZ (Volts)  
@IZT  
ZZT @IZT  
ZZK @IZK  
(Note 1.)  
Marking  
Min  
Nom  
Max  
(mA)  
(Ω)  
(Ω)  
(mA)  
(uA Max)  
(Volts)  
(mA)  
1N5261B  
1N5262B  
1N5263B  
1N5264B  
1N5265B  
1N5266B  
1N5267B  
1N5268B  
1N5269B  
1N5270B  
1N5271B  
1N5272B  
1N5273B  
1N5274B  
1N5275B  
1N5276B  
1N5277B  
1N5278B  
1N5279B  
1N5280B  
1N5261B  
1N5262B  
1N5263B  
1N5264B  
1N5265B  
1N5266B  
1N5267B  
1N5268B  
1N5269B  
1N5270B  
1N5271B  
1N5272B  
1N5273B  
1N5274B  
1N5275B  
1N5276B  
1N5277B  
1N5278B  
1N5279B  
1N5280B  
44.65  
48.45  
53.20  
57.00  
58.90  
64.60  
71.25  
77.90  
82.65  
86.45  
95.0  
47  
51  
49.35  
53.55  
58.80  
63.00  
65.10  
71.40  
78.75  
86.10  
91.35  
95.55  
105.0  
115.5  
126.0  
136.5  
147.0  
157.5  
168.0  
178.5  
189.0  
199.5  
2.7  
2.5  
105  
125  
1000  
1100  
1300  
1400  
1400  
1600  
1700  
2000  
2200  
2300  
2600  
3000  
4000  
4500  
4500  
5000  
5500  
5500  
6000  
6500  
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  
0.1  
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  
36  
39  
+0.095  
+0.096  
+0.096  
+0.097  
+0.097  
+0.097  
+0.098  
+0.098  
+0.099  
+0.099  
+0.11  
56  
2.2  
150  
43  
60  
2.1  
170  
46  
62  
2.0  
185  
47  
68  
1.8  
230  
52  
75  
1.7  
270  
56  
82  
1.5  
330  
62  
87  
1.4  
370  
68  
91  
1.4  
400  
69  
100  
110  
120  
130  
140  
150  
160  
170  
180  
190  
1.3  
500  
76  
104.5  
114.0  
123.5  
133.0  
142.5  
152.0  
161.5  
171.0  
180.5  
1.1  
750  
84  
+0.11  
1.0  
900  
91  
+0.11  
0.95  
0.9  
1100  
1300  
1500  
1700  
1900  
2200  
2400  
99  
+0.11  
106  
114  
122  
129  
137  
144  
+0.11  
0.85  
0.8  
+0.11  
+0.11  
0.74  
0.68  
0.66  
+0.11  
+0.11  
+0.11  
VF =1.1V Max @IF = 200mA for 30V below types, VF = 2.0V Max @IF = 200mA for 30~56V types, VF = 3.0V Max @IF = 200mA for 60V  
above types  
2. TOLERANCE AND TYPE NUMBER DESIGNATION (VZ)  
The type numbers listed have a standard tolerance on the nominal zener voltage of ± 5%.  
3. ZENER VOLTAGE (VZ) MEASUREMENT  
The zener voltage (VZ) is tested under pulse condition. The measured VZ is guaranteed to be within specification with device  
junction in thermal equilibrium.  
4. ZENER IMPEDANCE (ZZ) DERIVATION  
ZZT and ZZk are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits are  
for IZ(AC) = 0.1 IZ(DC) with AC frequency = 60Hz.  
5. TEMPERATURE COEFFICIENT (θVZ)  
Test conditions for temperature coefficient are as follows:  
A. IZT = 7.5mA, T1 = 25℃, T2 = 125℃ (1N5221B through 1N5242B)  
B. IZT = Rated IZT , T1 = 25℃, T2= 125℃ (1N5243B through 1N5281B)  
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.  
Number:DB-076  
Sep. 2010 / F  
Page 3  
®
Li censed b y ON Semico nductor ,  
A trademark o f semico nductor  
Components I ndustri es, LLC for  
Zener Tec hnolo gy and Pro ducts .  
TAK CHEONG  
Package Outline  
Case Outline  
DO-35  
DIM  
Millimeters  
Inches  
Min  
Max  
Min  
Max  
0.46  
3.05  
0.56  
5.08  
0.018  
0.120  
1.000  
0.060  
0.022  
0.200  
1.500  
0.090  
A
B
C
D
25.40  
1.52  
38.10  
2.29  
Note: all dimensions are within JEDEC standard.  
Number:DB-076  
Sep. 2010 / F  
Page 4  
TAK CHEONG ®  
DISCLAIMER NOTICE  
NOTICE  
The information presented in this document is for reference only. Tak Cheong reserves the right to make  
changes without notice for the specification of the products displayed herein.  
The product listed herein is designed to be used with ordinary electronic equipment or devices, and not  
designed to be used with equipment or devices which require high level of reliability and the malfunction of with  
would directly endanger human life (such as medical instruments, transportation equipment, aerospace  
machinery, nuclear-reactor controllers, fuel controllers and other safety devices), Tak Cheong Semiconductor  
Co., Ltd., or anyone on its behalf, assumes no responsibility or liability for any damagers resulting from such  
improper use of sale.  
This publication supersedes & replaces all information reviously supplied. For additional information, please visit  
our website http://www.takcheong.com, or consult your nearest Tak Cheong’s sales office for further assistance.  
Number: DB-100  
April 14, 2008 / A