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ZMM5221...ZMM5267
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 (Ta = 25 OC)
Parameter
Power Dissipation
Junction Temperature
Storage Temperature Range
1) Valid provided that electrodes are kept at ambient temperature.
Symbol
Ptot
Tj
Tstg
Value
500 1)
175
- 65 to + 175
Unit
mW
OC
OC
Characteristics at Ta = 25 OC
Parameter
Thermal Resistance Junction to Ambient Air
Forward Voltage
at IF = 200 mA
1) Valid provided that electrodes are kept at ambient temperature.
Symbol
RthA
VF
Max.
0.3 1)
1.1
Unit
K/mW
V
SEMTECH ELECTRONICS LTD.
Subsidiary of Sino-Tech International (BVI) Limited
®
Dated : 24/12/2009 Rev: 01

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ZMM5221...ZMM5267
Characteristics at Ta = 25 OC
Zener Voltage Range 1)
Type
VZnom
(V)
VZT
Min. (V)
Max. (V)
ZMM5221B
2.4
2.28
2.52
ZMM5222B
2.5
2.38
2.62
ZMM5223B
2.7
2.57
2.83
ZMM5224B
2.8
2.66
2.94
ZMM5225B
3
2.85
3.15
ZMM5226B
3.3
3.14
3.46
ZMM5227B
3.6
3.42
3.78
ZMM5228B
3.9
3.71
4.09
ZMM5229B
4.3
4.09
4.51
ZMM5230B
4.7
4.47
4.93
ZMM5231B
5.1
4.85
5.35
ZMM5232B
5.6
5.32
5.88
ZMM5233B
6
5.7
6.3
ZMM5234B
6.2
5.89
6.51
ZMM5235B
6.8
6.46
7.14
ZMM5236B
7.5
7.13
7.87
ZMM5237B
8.2
7.79
8.61
ZMM5238B
8.7
8.27
9.13
ZMM5239B
9.1
8.65
9.55
ZMM5240B
10
9.5
10.5
ZMM5241B
11
10.45
11.55
ZMM5242B
12
11.4
12.6
ZMM5243B
13
12.35
13.65
ZMM5244B
14
13.3
14.7
ZMM5245B
15
14.25
15.75
ZMM5246B
16
15.2
16.8
ZMM5247B
17
16.15
17.85
ZMM5248B
18
17.1
18.9
ZMM5249B
19
18.05
19.95
ZMM5250B
20
19
21
ZMM5251B
22
20.9
23.1
ZMM5252B
24
22.8
25.2
ZMM5253B
25
23.75
26.25
ZMM5254B
27
25.65
28.35
ZMM5255B
28
26.6
29.4
ZMM5256B
30
28.5
31.5
ZMM5257B
33
31.35
34.65
ZMM5258B
36
34.2
37.8
ZMM5259B
39
37.05
40.95
ZMM5260B
43
40.85
45.15
ZMM5261B
47
44.65
49.35
ZMM5262B
51
48.45
53.55
ZMM5263B
56
53.2
58.8
ZMM5264B
60
57
63
ZMM5265B
62
58.9
65.1
ZMM5266B
68
64.6
71.4
ZMM5267B
75
71.25
78.75
1) Tested with pulses tp = 20 ms.
at lZT
(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
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
2
1.8
1.7
Dynamic Resistance
ZZT ZZK at IZK
Max. ()
Max. ()
(mA)
30
1200
0.25
30
1250
0.25
30
1300
0.25
30
1400
0.25
29
1600
0.25
28
1600
0.25
24
1700
0.25
23
1900
0.25
22
2000
0.25
19
1900
0.25
17
1600
0.25
11
1600
0.25
7
1600
0.25
7
1000
0.25
5 750 0.25
6 500 0.25
8 500 0.25
8 600 0.25
10 600 0.25
17 600 0.25
22 600 0.25
30 600 0.25
13 600 0.25
15 600 0.25
16 600 0.25
17 600 0.25
19 600 0.25
21 600 0.25
23 600 0.25
25 600 0.25
29 600 0.25
33 600 0.25
35 600 0.25
41 600 0.25
44 600 0.25
49 600 0.25
58 700 0.25
70 700 0.25
80 800 0.25
93 900 0.25
105 1000 0.25
125 1100 0.25
150 1300 0.25
170 1400 0.25
185 1400 0.25
230 1600 0.25
270 1700 0.25
Reverse Current
IR at VR
Max. (µA)
(V)
100 1
100 1
75 1
75 1
50 1
25 1
15 1
10 1
51
52
52
53
5 3.5
54
35
36
3 6.5
3 6.5
37
38
2 8.4
1 9.1
0.5 9.9
0.1 10
0.1 11
0.1 12
0.1 13
0.1 14
0.1 14
0.1 15
0.1 17
0.1 18
0.1 19
0.1 21
0.1 21
0.1 23
0.1 25
0.1 27
0.1 30
0.1 33
0.1 36
0.1 39
0.1 45
0.1 46
0.1 47
0.1 52
0.1 56
SEMTECH ELECTRONICS LTD.
Subsidiary of Sino-Tech International (BVI) Limited
®
Dated : 24/12/2009 Rev: 01

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ZMM5221...ZMM5267
500
400
300
200
100
0
0 25
100 150 200
Ambient Temperature: Ta (OC)
Power Derating Curve
SEMTECH ELECTRONICS LTD.
Subsidiary of Sino-Tech International (BVI) Limited
®
Dated : 24/12/2009 Rev: 01