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ZMM5221 THRU ZMM5262
Features
· Standards Zener voltage tolerance is 20%.Add suffix "A"
for 10% tolerance and suffix "B" for 5% tolerance other
tolerance, non standards and higher zener voltage upon
request.
· These diode are also available in DO-35 case with type
designation 1N5221 thru 1N5262
0.5W SILICON PLANAR
ZENER DIODES
LL-34
SOLDERABLE ENDS
0.020(0.50)
0.011(0.28)
Mechanical Data
· Case : LL-34
· Weight : Approx. 0.05 gram
0.146(3.70)
0.130(3.30)
0.063(1.60)
0.051(1.30)
Dimensions in inches and (millimeters)
Absolute Maximum Ratings (Limiting Values)
Zener current see table "Characteristics"
Power dissipation at TA=75
Junction Temperature
Storage Temperature range
1) Valid provided that electrodes are kept at ambient temperature
(TA=25)
Symbols
Ptot
TJ
TSTG
Value
5001)
175
-65 to+175
Units
mW
Electrical Characteristics (TA=25)
Symbols
Thermal resistance junction to ambient
Forward voltage at IF=200mA
R JA
VF
1) Valid provided that electrodes are kept at ambient temperature
Min.
Typ.
Max.
3001)
1.1
Units
/W
V

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ZMM5221...ZMM5262 SILICON PLANAR ZENER DIODES
Type
Nominal
Zener
Voltage
at
IzT
VzV
Test
Current
IZT mA
Maximum zener
impedance1)
Typical
Temperature
Coefficient
at at
IzT
Izk=0.25mA
VZ %/K
ZZT ZZK IzT mA
Maximum Reverse Leakage Current
Test-Voltage
IR A Suffix A
VRV
Suffix B
VRV
Maximum
Regulator
Current2)
IZM mA
ZMM5221
2.4
20
30
1200
-0.085
100
0.95
1.0
191
ZMM5222
2.5
20
30
1250
-0.085
100
0.95
1.0
182
ZMM5223
2.7
20
30
1300
-0.080
75
0.95
1.0
168
ZMM5224
2.8
20
30
1400
-0.080
75
0.95
1.0
162
ZMM5225
3.0
20
29
1600
-0.075
50
0.95
1.0
152
ZMM5226
3.3
20
28
1600
-0.070
25
0.95
1.0
138
ZMM5227
3.6
20
24
1700
-0.065
15
0.95
1.0
126
ZMM5228
3.9
20
23
1900
-0.060
10
0.95
1.0
115
ZMM5229
4.3
20
22
2000
-0.055
5
0.95 1.0
106
ZMM5230
4.7
20
19
1900
0.030
5
1.9 2.0
97
ZMM5231
5.1
20
17
1600
0.030
5
1.9 2.0
89
ZMM5232
5.6
20
11
1600
+0.038
5
2.9 3.0
81
ZMM5233
6.0
20
7
1600
+0.038
5
3.3 3.5
76
ZMM5234
ZMM5235
6.2
6.8
20
20
7
1000
+0.045
5
5
750 +0.050
3
3.8 4.0
4.8 5.0
73
67
ZMM5236
ZMM5237
7.5
8.2
20
20
6
500 +0.058
3
5.7 6.0
61
8
500 +0.062
3
6.2 6.5
55
ZMM5238
8.7
20
8
600 +0.065
3
6.2 6.5
52
ZMM5239
9.1
20
10
600 +0.068
3
6.7 7.0
50
ZMM5240
10
20
17
600 +0.075
3
7.6 8.0
45
ZMM5241
11
20
22
600 +0.076
2
8.0 8.4
41
ZMM5242
12
20
30
600 +0.077
1
8.7 9.1
38
ZMM5243
13
9.5
13
600 +0.079 0.5
9.4
9.9
35
ZMM5244
14
9.0
15
600 +0.082 0.1
9.5
10
32
ZMM5245
15
8.5
16
600 +0.082 0.1
10.5
11
ZMM5246
16
7.8
17
600 +0.083 0.1
11.4
12
ZMM5247
17
7.4
19
600 +0.084 0.1
12.4
13
ZMM5248
18
7.0
21
600 +0.085 0.1
13.3
14
30
28
27
25
ZMM5249
19
6.6
23
600 +0.086 0.1
13.3
14
ZMM5250
20
6.2
25
600 +0.086 0.1
14.3
15
24
23
ZMM5251
22
5.6
29
600 +0.087 0.1
16.2
17
21
ZMM5252
24
5.2
33
600 +0.087 0.1
17.1
18
19.1
ZMM5253
25
5.0
35
600 +0.089 0.1
18.1
19
18.2
ZMM5254
27
4.6
41 600 +0.090 0.1 20
21 16.8
ZMM5255
28
4.5
44 600 +0.091 0.1 20
21 16.2
ZMM5256
30
4.2
49 600 +0.091 0.1 22
23 15.1
ZMM5257
33
3.8
58 700 +0.092 0.1 24
25 13.8
ZMM5258
36
3.4
70 700 +0.093 0.1 26
27 12.6
ZMM5259
39
3.2
80 800 +0.094 0.1 29
30 11.6
ZMM5260
43
3.0
93 900 +0.095 0.1 31
33 10.6
ZMM5261
47
2.7
105
1000
+0.095
0.1
34
36
9.7
ZMM5262
51
2.5
125
1100
+0.096
0.1
37
39
8.9
1) The zener impedance is derived from the 1kHz AC voltage which results when on AC current having an RMS value equal to 10% of the Zener
current (IzT or IzK) is superimposed on IzT or IzK Zener impedance is measured at two points to insure a sharp knee on the breakdown curve
and to eliminate unstable units.
2) Vaild provided that leads are kept at ambient temperature at a distance of 8mm from case.
3) Measured with device junction in thermal equilibrium.

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ZMM5221 THRU ZMM5262 SILICON PLANAR ZENER DIODES
Admissible power dissipation versus ambient temperature
(Valid provided that electrodes are kept at ambient
temperature)
mW
500
Ptot 400
300
ZMM5221...
200
100
0
0 50 100 150 200 250
Tamb