ZMM5221...ZMM5264
SILICON PLANAR ZENER DIODES
Standard zener voltage tolerance is ± 20%. Add suffix "A"
for ± 10% tolerance, suffix "B" for ± 5% tolerance and
suffix "C" for ± 2% tolerance. Other tolerance, non
standard and higher zener voltages are upon request.
LL-34
Absolute Maximum Ratings (T
a
= 25
O
C)
Parameter
Power Dissipation at T
a
= 75
O
C
Junction Temperature
Storage Temperature Range
1)
Symbol
P
tot
T
j
T
S
Value
500
1)
Unit
mW
O
175
- 65 to + 175
C
C
O
Valid provided that electrodes are kept at ambient temperature.
Characteristics at T
a
= 25
O
C
Parameter
Thermal Resistance Junction to Ambient Air
Forward Voltage
at I
F
= 200 mA
1)
Symbol
R
thA
V
F
Max.
0.3
1)
1.1
Unit
K/mW
V
Valid provided that electrodes are kept at ambient temperature.
ZMM5221...ZMM5264
Nominal Zener
3)
Voltage
V
Z
at I
ZT
(V)
(mA)
2.4
2.5
2.7
2.8
3
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6
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
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
8.5
7.8
7.4
7.0
6.6
6.2
5.6
5.2
5
4.6
4.4
4.2
3.8
3.4
3.2
3
2.7
2.5
2.2
2.1
Maximum Zener Impedance
Z
ZT
(Ω)
at I
ZT
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
105
125
150
170
1)
Type
ZMM5221
ZMM5222
ZMM5223
ZMM5224
ZMM5225
ZMM5226
ZMM5227
ZMM5228
ZMM5229
ZMM5230
ZMM5231
ZMM5232
ZMM5233
ZMM5234
ZMM5235
ZMM5236
ZMM5237
ZMM5238
ZMM5239
ZMM5240
ZMM5241
ZMM5242
ZMM5243
ZMM5244
ZMM5245
ZMM5246
ZMM5247
ZMM5248
ZMM5249
ZMM5250
ZMM5251
ZMM5252
ZMM5253
ZMM5254
ZMM5255
ZMM5256
ZMM5257
ZMM5258
ZMM5259
ZMM5260
ZMM5261
ZMM5262
ZMM5263
ZMM5264
1)
Typical Temperature
Coefficient
α
VZ
%/K
-0.085
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
-0.055
60.030
60.030
+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
Z
ZK
(Ω)
at I
ZK
= 0.25 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
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
Maximum Reverse Leakage
Current
Suffix B
Suffix A
I
R
(µA)
at V
R
(V) at V
R
(V)
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
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
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
1.9
2.9
3.3
3.8
4.8
5.7
6.2
6.2
6.7
7.6
8.0
8.7
9.4
9.5
10.5
11.4
12.4
13.3
13.3
14.3
16.2
17.1
18.1
20
20
22
24
26
29
31
34
37
43
44
1
1
1
1
1
1
1
1
1
2
2
3
3.5
4
5
6
6.5
6.5
7
8
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
45
46
Maximum
Regulator
2)
Current
I
ZM
(mA)
185
180
165
160
152
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
19.1
18.2
16.8
16.2
15.1
13.8
12.6
11.6
10.6
9.7
8.9
8.1
7.6
The Zener Impedance is derived from the 60 Hz AC voltage which results when an AC current having an RMS value equal to 10% of the
Zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener Impedance is measured at two points to insure a sharp knee on the
breakdown curve and to eliminate unstable units.
2)
3)
4)
Valid provided that electrodes are kept at ambient temperature.
Measured under thermal equilibrium and DC test conditions.
Tested with pulses tp = 20 ms.
PCB Design
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