1N5221B THRU 1N5278B
SILICON ZENER DIODES
500mW, 2.4 THRU 170 VOLT
5% TOLERANCE
w w w. c e n t r a l s e m i . c o m
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 1N5221B series
silicon Zener diodes are highly reliable voltage regulators
designed for use in industrial, commercial, entertainment
and computer applications.
DO-35 CASE
MAXIMUM RATINGS:
(TL=75°C)
Power Dissipation
Operating and Storage Junction Temperature
VZ Tolerance: Part number with “B” suffix
VZ Tolerance: Part number with “C” suffix
VZ Tolerance: Part number with “D” suffix
SYMBOL
PD
TJ, Tstg
500
-65 to +200
±5
±2
±1
UNITS
mW
°C
%
%
%
ELECTRICAL CHARACTERISTICS:
(TA=25°C) VF=1.1V MAX @ IF=200mA (for all types)
ZENER
VOLTAGE
TYPE
MIN
V
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
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
VZ @ IZT
NOM
V
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
MAX
V
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
10.50
11.55
12.60
13.65
14.70
15.75
16.80
TEST
CURRENT
IZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
9.0
8.5
7.8
MAXIMUM ZENER
IMPEDANCE
ZZT @ IZT
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
ZZK @ IZK
Ω
mA
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
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
MAXIMUM
REVERSE
CURRENT
IR
μA
100
100
75
75
50
25
15
10
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
@ 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
MAXIMUM
TEMPERATURE
COEFFICIENT
V
Z
%/°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
R3 (11-September 2013)
1N5221B THRU 1N5278B
SILICON ZENER DIODES
500mW, 2.4 THRU 170 VOLT
5% TOLERANCE
ELECTRICAL CHARACTERISTICS - Continued:
(TA=25°C) VF=1.1V MAX @ IF=200mA (for all types)
ZENER
VOLTAGE
TYPE
MIN
V
1N5247B
1N5248B
1N5249B
1N5250B
1N5251B
1N5252B
1N5253B
1N5254B
1N5255B
1N5256B
1N5257B
1N5258B
1N5259B
1N5260B
1N5261B
1N5262B
1N5263B
1N5264B
1N5265B
1N5266B
1N5267B
1N5268B
1N5269B
1N5270B
1N5271B
1N5272B
1N5273B
1N5274B
1N5275B
1N5276B
1N5277B
1N5278B
16.15
17.10
18.05
19.00
20.90
22.80
23.75
25.65
26.60
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
57.00
58.90
64.60
71.25
77.90
82.65
86.45
95.00
104.5
114.0
123.5
133.0
142.5
152.0
161.5
VZ @ IZT
NOM
V
17
18
19
20
22
24
25
27
28
30
33
36
39
43
47
51
56
60
62
68
75
82
87
91
100
110
120
130
140
150
160
170
MAX
V
17.85
18.90
19.95
21.00
23.10
25.20
26.25
28.35
29.40
31.50
34.65
37.80
40.95
45.15
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
TEST
CURRENT
IZT
mA
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
2.1
2.0
1.8
1.7
1.5
1.4
1.4
1.3
1.1
1.0
0.95
0.90
0.85
0.80
0.74
MAXIMUM ZENER
IMPEDANCE
ZZT @ IZT
Ω
19
21
23
25
29
33
35
41
44
49
58
70
80
93
105
125
150
170
185
230
270
330
370
400
500
750
900
1100
1300
1500
1700
1900
ZZK @ IZK
Ω
mA
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
1400
1600
1700
2000
2200
2300
2600
3000
4000
4500
4500
5000
5500
5500
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
MAXIMUM
REVERSE
CURRENT
IR
μA
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
0.1
@ VR
V
13
14
14
15
17
18
19
21
21
23
25
27
30
33
36
39
43
46
47
52
56
62
68
69
76
84
91
99
106
114
122
129
MAXIMUM
TEMPERATURE
COEFFICIENT
V
Z
%/°C
+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
+0.098
+0.099
+0.099
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
DO-35 CASE - MECHANICAL OUTLINE
C
B
A
D
D
R3 (11-September 2013)
w w w. c e n t r a l s e m i . c o m
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• Consolidated shipping options
DESIGNER SUPPORT/SERVICES
Central’s applications engineering team is ready to discuss your design challenges. Just ask.
• Free quick ship samples (2
nd
day air)
• Special wafer diffusions
• Online technical data and parametric search
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REQUESTING PRODUCT PLATING
1.
2.
If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when
ordering (example: 2N2222A TIN/LEAD).
If requesting Lead (Pb) Free plated devices, add the suffix “ PBFREE” to the part number
when ordering (example: 2N2222A PBFREE).
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w w w. c e n t r a l s e m i . c o m
(001)
http://www.centralsemi.com
PDN01089
5/02/18
11/02/18
5/02/19
Summary:All high voltage 500mW Zener diodes in the DO-35 package are discontinued and now classified as End of Life (EOL).
Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by
other manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum level of
sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's ongoing Product
Management Process. Any replacement products are noted below. The effective date for placing last purchase orders will be six (6) months
from the date of this notice and twelve (12) months from the notice date for final shipments, and minimum order quantities may apply.
The last purchase and shipment dates may be extended if inventory is available.
Central Part Number
1N5263B BK
1N5263B TR
1N5264B BK
1N5264B TR
1N5265B BK
1N5265B TR
1N5266B BK
1N5266B TR
1N5267B BK
1N5267B TR
1N5268B AP
1N5268B BK
1N5268B TR
1N5269B AP
1N5269B BK
1N5269B TR
1N5270B AP
1N5270B BK
1N5270B TR
1N5271B AP
1N5271B BK
1N5271B TR
1N5272B AP
1N5272B BK
1N5272B TR
1N5273B AP
1N5273B BK
1N5273B TR
1N5274 TR
1N5274B BK
1N5274B TR
1N5275B BK
1N5275B TR
1N5276B BK
1N5276B TR
1N5277B BK
1N5277B TR
1N5278B BK
*** CONTINUED ***
Replacement
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
http://www.centralsemi.com
PDN01089
5/02/18
11/02/18
5/02/19
*** CONTINUED FROM PRIOR PAGE ***
Central Part Number
1N5278B TR
1N5279B BK
1N5279B TR
1N5280B BK
1N5280B TR
1N5281B BK
1N5281B TR
Replacement
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we
have no replacement available. Please email your requests to engineering@centralsemi.com.
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