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AiT Components Inc.
www.ait-components.com
1N5221B~1N5272B
ZENER DIODES
500mW 1N52 SERIES
DESCRIPTION
The 1N5221B~1N5272B are available in DO-35
Package
PIN DESCRIPTION
FEATURES
500mW DO-35
Zener voltage regulator diodes
Hermetically sealed glass silicon zener diodes
Complete voltage range_2.4 to 43 volts
RoHS Compliant
Available in DO-35 Package
ORDERING INFORMATION
Package Type
DO-35
Part Number
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
Package Type
Part Number
1N5248B
1N5249B
1N5250B
1N5251B
1N5252B
1N5253B
1N5254B
1N5255B
1N5256B
1N5257B
1N5258B
1N5259B
DO-35
1N5260B
1N5261B
1N5262B
1N5263B
1N5264B
1N5265B
1N5266B
1N5267B
1N5268B
1N5269B
1N5270B
1N5271B
1N5272B
Note
5,000pcs/Tape
AiT provides all RoHS Compliant Products
REV1.1
- APR 2012 RELEASED, SEP 2012 UPDATED -
-1-

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AiT Components Inc.
www.ait-components.com
1N5221B~1N5272B
ZENER DIODES
500mW 1N52 SERIES
ABSOLUTE MAXIMUM RATINGS
TJ=25
PV, Power dissipation(Tamb50)
0.5W
TJ, Junction temperature
175
TSTG, Storage temperature range
-65 ~ +175
VF, Forward voltage(IF=200mA)
<1.1V
Stresses above may cause permanent damage to the device. These are stress ratings only and functional operation of the device at
these or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
REV1.1
- APR 2012 RELEASED, SEP 2012 UPDATED -
-2-

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AiT Components Inc.
www.ait-components.com
ELECTRICAL PARAMETER
1N5221B~1N5272B
ZENER DIODES
500mW 1N52 SERIES
ZENER VOLTAGE REGULATOR
TA=25, VFMAX=1.1V @ IF=200mA P=500 (mW)
Symbol
Parameter
VZ Reverse Zener Voltage @ lZT
LZT Reverse current
ZZT Maximum Zener impedance@ IZT
LZK Reverse current
ZZK Maximum Zener impedance @ IZK
IR Reverse leakage current @VR
VR Breakdown voltage
IF Forward current
VF Forward voltage @IF
REV1.1
- APR 2012 RELEASED, SEP 2012 UPDATED -
-3-

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AiT Components Inc.
www.ait-components.com
1N5221B~1N5272B
ZENER DIODES
500mW 1N52 SERIES
ELECTRICAL CHARACTERISTICS
TA=25, VFMAX=1.1V @ IF=200mA P=500 (mW)
Part
Number
Nominal
Zener
Voltage
Test
Current
Max Zener Impedance
A and B Suffix only
VZ@IZT
I ZT ZZT @ I ZT ZZK@ IZK=0.25mA
Max Reverse
Leakage Current
IR VR
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
Volts
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
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
mA
20
20
20
20
20
20
9.5
9.0
8.5
7.8
7.4
7.0
6.6
6.2
Ω
30
30
30
30
29
28
24
23
22
19
17
11
7.0
7.0
5.0
6.0
8.0
8.0
10
17
22
30
13
15
16
17
19
21
23
25
Ω
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
750
500
500
600
600
600
600
600
uA Max
100
100
75
75
50
25
15
10
5.0
5.0
5.0
5.0
5.0
5.0
3.0
3.0
2.0
1.0
0.5
0.1
0.1
0.1
Volts B
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
Max Zener Voltege
Temperature Coff
(A and B suffix only)
VZ
(%/℃)
-0.085
-0.085
-0.08
-0.08
-0.075
-0.07
-0.065
-0.06
±0.055
±0.03
±0.03
+0.038
+0.038
+0.045
+0.05
+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
REV1.1
- APR 2012 RELEASED, SEP 2012 UPDATED -
-4-

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AiT Components Inc.
www.ait-components.com
1N5221B~1N5272B
ZENER DIODES
500mW 1N52 SERIES
TA=25, VFMAX=1.1V @ IF=200mA P=500 (mW)
Part
Number
Nominal
Zener
Voltage
Test
Current
Max Zener Impedance
A and B Sufflx only
VZ@IZT
I ZT Z ZT @ I ZT Z ZK@ IZK=0.25mA
Max Reverse
Leakage Current
IR VR
Volts
mA
Ω
Ω uA Max Volts B
1N5251B
22
5.6
29
17
1N5252B
24
5.2
33
18
1N5253B
25
5.0
35
600 0.1 19
1N5254B
27
4.6
41
21
1N5255B
28
4.5
44
21
1N5256B
30
4.2
49
600
23
1N5257B
33
3.8
58
700
25
1N5258B
36
3.4
70
700 0.1 27
1N5259B
39
3.2
80
800
30
1N5260B
43
3.0
93
900
33
1N5261B
47
2.7
105
1000
36
1N5262B
51
2.5
125
1100
39
1N5263B
56
2.2
150
1300
0.1 43
1N5264B
60
2.1
170
1400
46
1N5265B
62
2.0
185
1400
47
1N5266B
68
1.8
230
1600
52
1N5267B
75
1.7
270
1700
56
1N5268B
82
1.5
330
2000
0.1 62
1N5269B
87
1.4
370
2200
68
1N5270B
91
1.4
400
2300
69
1N5271B
100
1.3
500
2600
76
1N5272B
110
1.1
750
3000
0.1 84
NOTE: Valid provided that leads at a distance of 8mm from case are kept at ambient temperature
Tested with pulese tP=40ms
Max Zener Voltege
Temperature Coff
(A amd Bsuffix only)
VZ
(%/℃)
+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
+0.098
+0.099
+0.099
+0.110
+0.110
REV1.1
- APR 2012 RELEASED, SEP 2012 UPDATED -
-5-