1N52-SERIES
ZENER DIODES
Zener Voltage:
2.4-56V
Peak Pulse Power:
500mW
FEATURE
DO-35(GLASS)
Low zener impedance
Low regulation factor
Glass passivated junction
High temperature soldering guaranteed:
260 C/10S/9.5mm lead length at 5 lbs tension
1.0 2(26.0)
MIN.
0.079(2.0)
MAX
0.165 (4.2)
0.138 (3.5)
MECHANICAL DATA
Case:
JEDEC DO-35(GLASS) molded glass body
:
Terminals
Plated leads, solderable per MIL-STD 750,
method 2026
Polarity:
Color band denotes cathode end
Mounting Position:
Any
Weight:
0.05 ounce,0.14 grams
1.0 2(26.0)
MIN.
0.018(0.45)
TYP
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
MDD Catalog
Number
SYMBOLS
VALUE
UNITS
Zener Current see Table Characteristics
Power Dissipation at Tamb=25 C(Note 1)
Junction Temperature
Storage Temperature Range
Thermal resistance junction ambient(Note 1)
Forward voltage at I
F
=200mA
P
tot
T
j
T
STG
R
θJA
V
F
500
200
-65 to + 200
0.3
1.1
mW
C
C
K/mW
V
Note 1: Valid provided that leads at a distance of 10mm from case are kept at ambient temperature
MDD ELECTRONIC
ELECTRICAL CHARACTERISTICS (at T
A
=25 C unless otherwise noted)
Nominal
Zener
Voltage
Vz@I
ZT
(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
6.0
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
Device Type
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
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
9.5
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
Maximum Zener
Impedance
Z
ZT@
I
ZT
Ohms
30
30
30
30
29
28
24
23
22
19
17
11
7
7
5
6
8
8
10
17
22
30
13
15
16
17
19
21
23
25
29
33
35
41
44
49
58
70
80
93
150
125
150
Maximum Reverse
Leakage Current
I
R
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
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
Ohms
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
@V
R
Volts
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
Typical
Temperature
Coefficient
(%/ 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
+0.084
+0.085
+0.085
+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
Maximum
Regulator
Current
I
ZM
mA
191
182
168
162
151
138
126
115
106
97
89
81
76
73
67
61
55
52
50
45
41
38
35
32
30
28
27
25
24
23
21.2
19.1
18.2
16.8
16.2
15.1
13.8
12.6
11.5
10.6
9.7
8.9
8.1
Note 1: Suffix “B” indicate +5% tolerance
MDD ELECTRONIC
RATINGS AND CHARACTERISTIC CURVES 1N52 SERIES
Breakdown characteristics
mA
50
Iz,TEST CURRENT,MILLIAMPERS
5
10
15
20
25
30
V
40
30
Test Current
Iz=20mA
20
10
0
P
tot,
POWER DISSIPATION,MILLIWATTS
1N5224
1N5228
Admissible power dissipation versus ambient temperature
Valid provided that leads are kept at ambient temperature at a distance of 10mm from case
500
400
300
200
100
0
1N5235
1N5234
1N5232
1N5231
1N5230
1N5229
1N5239
0
1N5242
1N5241
50
Vz,ZENER VOLTAGE,volts
100
AMBIENT TEMPERATURE, C
MDD ELECTRONIC
1N5245
150
200
1N5250
250
1N5252
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