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1N5221 THRU 1N5281
SILICON ZENER DIODES
REVERSE VOLTAGE:
2.4 TO 200 VOLTS
POWER DISSIPATION: 500 mWATTS
FEATURES
· Planar Die construction
· 500mW Power Dissipation
· Ideally Suited for Automated Assembly Processes
· Standard Zener voltage tolerance is ±20%. Add suffix “A” for
±10% tolerance, suffix “B” for ±5% tolerance, or suffix “C” for
±2% tolerance. Other tolerances and other, non-standard Zener
voltages are available upon request.
MECHANICAL DATA
Case: Molded glass DO-35
Lead: Axial leads, solderable per MIL-STD-202,
method 208 guaranteed
Polarity: Color band denotes cathode end
Mounting position: Any
Weight: approx. 0.13 g
DO-35
Dimensions in inches and (millimeters)
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Parameter
Power Dissipation at Tamb=75
Zener Current
Junction Temperature
Storage Temperature Range
Symbol
PD
IZ
TJ
Tstg
Value
500
PD/VZ
200
-65 to +200
Unit
mWatt
mAmp
Thermal Characteristics
Tamb = 25 °C, unless otherwise specified
Parameter
Junction Ambient at l = 9.5 mm (3/8 "), TL=constant
Symbol
RthJA
Value
300
Unit
K/W
Electrical Characteristics
Tamb = 25 °C, unless otherwise specified
Parameter
Forward Voltage at IF = 200 mA
Symbol
VF
Min. Typ. Max. Unit
1.1 Volt

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1N5221 THRU 1N5281
SILICON ZENER DIODES
Electrical Characteristics
Tamb = 25 °C, unless otherwise specified
Type
1N5221
1N5222
1N5223
1N5224
1N5225
1N5226
1N5227
1N5228
1N5229
1N5230
1N5231
1N5232
1N5233
1N5234
1N5235
1N5236
1N5237
1N5238
1N5239
1N5240
1N5241
1N5242
1N5243
1N5244
1N5245
1N5246
1N5247
1N5248
1N5249
1N5250
Zener Voltage Range (Note 1) Maximum Zener Impedance (Note 1)
VZ
IZT
RZT @ IZT
RZK @ IZK
IZK
V mA Omh (MAX) Omh (MAX) mA
2.4 20
30
1200
0.25
2.5 20
30
1250
0.25
2.7 20
30
1300
0.25
2.8 20
30
1400
0.25
3.0 20
29
1600
0.25
3.3 20
28
1600
0.25
3.6 20
24
1700
0.25
3.9 20
23
1900
0.25
4.3 20
22
2000
0.25
4.7 20
19
1900
0.25
5.1 20
17
1600
0.25
5.6 20
11
1600
0.25
6.0 20
7
1600
0.25
6.2 20
7
1000
0.25
6.8 20
5 750 0.25
7.5 20
6 500 0.25
8.2 20
8 500 0.25
8.7 20
8 600 0.25
9.1 20
10 600 0.25
10 20
17 600 0.25
11 20
22 600 0.25
12 20
30 600 0.25
13 9.5
13 600 0.25
14 9.0
15 600 0.25
15 8.5
16 600 0.25
16 7.8
17 600 0.25
17 7.4
19 600 0.25
18 7.0
21 600 0.25
19 6.6
23 600 0.25
20 6.2
25 600 0.25
Reverse leakage Current
IR
uA (MAX)
100
100
75
75
50
25
15
10
5
5
5
5
5
5
3
3
3
3
3
3
2
1
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
VR
V
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
Temp. Coefficient
Of Zener Voltage
TKVZ @ IZT
%/(MAX)
-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
+0.075
+0.076
+0.077
+0.079
+0.082
+0.082
+0.083
+0.084
+0.085
+0.086
NOTES:
1- Based on dc-measurement at thermal equilibrium; lead length = 9.5 (3/8 "); thermal resistance of heat sink = 30 K/W

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1N5221 THRU 1N5281
SILICON ZENER DIODES
Electrical Characteristics
Tamb = 25 °C, unless otherwise specified
Type
1N5251
1N5252
1N5253
1N5254
1N5255
1N5256
1N5257
1N5258
1N5259
1N5260
1N5261
1N5262
1N5263
1N5264
1N5265
1N5266
1N5267
1N5268
1N5269
1N5270
1N5271
1N5272
1N5273
1N5274
1N5275
1N5276
1N5277
1N5278
1N5279
1N5280
1N5281
Zener Voltage Range (Note 1) Maximum Zener Impedance (Note 1)
VZ
IZT
RZT @ IZT
RZK @ IZK
IZK
V mA Omh (MAX) Omh (MAX) mA
22 5.6
29 600 0.25
24 5.2
33 600 0.25
25 5.0
35 600 0.25
27 4.6
41 600 0.25
28 4.5
44 600 0.25
30 4.2
49 600 0.25
33 3.8
58 700 0.25
36 3.4
70 700 0.25
39 3.2
80 800 0.25
43 3.0
93 900 0.25
47 2.7 105 1000 0.25
51 2.5 125 1100 0.25
56 2.2 150 1300 0.25
60 2.1 170 1400 0.25
62 2.0 185 1400 0.25
68 1.8 230 1600 0.25
75 1.7 270 1700 0.25
82 1.5 330 2000 0.25
87 1.4 370 2200 0.25
91 1.4 400 2300 0.25
100 1.3
500
-
-
110 1.2
700
-
-
120 1.0
950
-
-
130 0.95 1100
-
-
140 0.90 1300
-
-
150 0.85 1500
-
-
160 0.80 1700
-
-
170 0.74 1900
-
-
180 0.68 2200
-
-
190 0.66 2400
-
-
200 0.65 2500
-
-
Reverse leakage Current
IR
uA (MAX)
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
0.1
0.1
0.1
0.1
0.1
0.1
0.1
VR
V
17
18
19
21
21
23
25
27
30
33
36
39
43
46
47
52
56
62
68
69
75
83
90
98
105
113
120
127
135
142
150
Temp. Coefficient
Of Zener Voltage
TKVZ @ IZT
%/(MAX)
+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
+0.098
+0.099
+0.099
+0.100
+0.100
+0.100
+0.110
+0.110
+0.110
+0.115
+0.115
+0.120
+0.120
NOTES:
1- Based on dc-measurement at thermal equilibrium; lead length = 9.5 (3/8 "); thermal resistance of heat sink = 30 K/W

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1N5221 THRU 1N5281
SILICON ZENER DIODES
RATINGS AND CHARACTERISTIC CURVES

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1N5221 THRU 1N5281
SILICON ZENER DIODES
RATINGS AND CHARACTERISTIC CURVES