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FEATURES
GALAXY ELECTRICAL
ZENER DIODES
1N5221B - - - 1N5279B
POWER DISSIPATION: 500 mW
DO-35(GLASS)
Silicon planar power zener diodes
Standard Zener voltage tolerance is ±5%. With a "B"
suffix. Other tolerances are available upon request.
MECHANICAL DATA
Case:DO-35, Glass Case
Terminals: Solderable per MIL-STD-202, Method 208
Polarity: Cathode Band
Marking: Type Number
Approx. Weight: 0.13 grams.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
ambient temperature unless otherwise specified.
Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%.
SYMBOL
Zener current (see Table "Characteristics")
VALUE
UNIT
Pow er dissipation at T
amb
=25
P
tot
T
J
T
s
500
1)
175
-55---+175
mW
Junction temperature
Storage temperature
range
SYMBOL
Thermal resistance junction to ambient
MIN
TYP
MAX
300
1)
1.2
UNIT
/W
R
θ
JA
V
F
Forw ard voltage at I
F
=200mA
V
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NOTES:
(1) Valid provided that leads at a distance of 10 mm from case are kept at ambient temperature.
Document Number 0284001
BL
GALAXY ELECTRICAL
1.
ELECTRICAL CHARACTERISTICS
Nominal Zener
Voltage
1)
Type
V
Z
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
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
1N5279B
1)
(T
A
=25℃)
Test
Current
I
ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
10
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
2.1
2.0
1.8
1.7
1.5
1.4
1.4
1.3
1.1
1.0
0.95
0.90
0.95
0.80
0.74
0.68
Maximum Dynamic
Impedance
1)
Z
ZT
@I
ZT
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
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
2200
Typical
Temperature
of Coeffizient
αV
Z
@I
ZT
%/℃
-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
﹢0.087
﹢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
﹢0.099
﹢0.11
﹢0.11
﹢0.11
﹢0.11
﹢0.11
﹢0.11
﹢0.11
﹢0.11
Maximum Reverse
Leakage Current
I
RM
µ
A
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
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
0.1
Z
ZK
@
I
ZK
=0.25mA
Ω
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
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
6000
V
R
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
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
137
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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
33
36
39
43
47
51
56
60
62
68
75
85
87
91
100
110
120
130
140
150
160
170
180
Based on dc-measurement at thermal equilibrium; lead length=9.5(3/8");thermal resistance of heat sink=30K/W
Document Number 0284001
BL
GALAXY ELECTRICAL
2.
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- BREAKDOWN CHARACTERISTICS
1N5221B - - -
1N5279B
mA
50
5
10
15
20
25
30 V
40
I
Z
30
Test current
Iz=20mA
20
10
0
FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE
1N5224
1N5228
1N5229
1N5235
1N5234
1N5232
1N5231
1N5230
1N5239
1N5241
1N5242
1N5245
V
Z
1N5250
1N5252
mW
500
400
P
tot
300
200
100
0
0
100
T
amb
200℃
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Document Number 0284001
BL
GALAXY ELECTRICAL
3.
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