MMSZ52xxB Series
Surface Mount Zener Diodes
Vz Range: 2.4V to 75V Power Dissipation: 500mW
Features
Low zener impedance
High stability and high reliability
General purpose, medium current
Ideal for automated assembly process
SOD-123
Absolute Maximum Ratings (TA=25°C unless otherwise specified)
Parameter
Symbol
Value
Unit
Forward Voltage1 @ IF=10mA
VF
0.9
V
Power Dissipation2
PD
500
mW
Thermal Resistance, Junction to Ambient3
RθJA
340
°C/W
Thermal Resistance, Junction to Lead3
RθJL
150
°C/W
Junction Temperature Range
TJ
-55 to +150
°C
Storage Temperature Range
TSTG
-55 to +150
°C
Note:
1. Short duration test pulse used to minimize self-heating effect
2. Device mounted on ceramic PCB: 7.6mm x 9.4mm x 0.87mm with pad areas 25mm²
3. Thermal resistance measured with infrared scan method.
Electrical Characteristics (TA=25°C unless otherwise specified)
Zener Voltage Range
MPN
Test
Current
Vz(@Izt
Marking
Maximum Zener
Impedance
Maximum Reverse
Leakage Current
Zzt@Izt
Zzk@1zk=
0.25mA
IR
@VR
mA
Ω
Ω
uA
V
Nom
Min
Max
Izt
(V)
(V)
(V)
MMSZ5221B
C1
2.4
2.28
2.52
20
30
1200
100
1
MMSZ5222B
C2
2.5
2.38
2.63
20
30
1250
100
1
MMSZ5223B
C3
2.7
2.57
2.84
20
30
1300
75
1
MMSZ5224B
C4
2.8
2.66
2.94
20
30
1400
75
1
MMSZ5225B
C5
3.0
2.85
3.15
20
30
1600
50
1
MMSZ5226B
G1
3.3
3.14
3.47
20
28
1600
25
1
MMSZ5227B
G2
3.6
3.42
3.78
20
24
1700
15
1
MMSZ5228B
G3
3.9
3.71
4.1
20
23
1900
10
1
MMSZ5229B
G4
4.3
4.09
4.52
20
22
2000
5
1
MMSZ5230B
G5
4.7
4.47
4.94
20
19
1900
5
2
1/4
MMSZ52xxB Series
Surface Mount Zener Diodes
Vz Range: 2.4V to 75V Power Dissipation: 500mW
Electrical Characteristics (TA=25°C unless otherwise specified)
Zener Voltage Range
MPN
Test
Current
Vz(@Izt
Marking
Maximum Zener
Impedance
Maximum Reverse
Leakage Current
Zzt@Izt
Zzk@1zk=
0.25mA
IR
@VR
Nom
Min
Max
Izt
(V)
(V)
(V)
mA
Ω
Ω
uA
V
2
MMSZ5231B
E1
5.1
4.85
5.36
20
17
1600
5
MMSZ5232B
E2
5.6
5.32
5.88
20
11
1600
5
3
MMSZ5233B
E3
6.0
5.70
6.30
20
7
1600
5
3.5
MMSZ5234B
E4
6.2
5.89
6.51
20
7
1000
5
4
MMSZ5235B
E5
6.8
6.46
7.14
20
5
750
3
5
MMSZ5236B
F1
7.5
7.13
7.88
20
6
500
3
6
MMSZ5237B
F2
8.2
7.79
8.61
20
8
500
3
6.5
MMSZ5238B
F3
8.7
8.27
9.14
20
8
600
3
6.5
MMSZ5239B
F4
9.1
8.65
9.56
20
10
600
3
7
MMSZ5240B
F5
10
9.50
10.50
20
17
600
3
8
MMSZ5241B
H1
11
10.45
11.55
20
22
600
2
8.4
MMSZ5242B
H2
12
11.40
12.60
20
30
600
1
9.1
MMSZ5243B
H3
13
12.35
13.65
9.5
13
600
0.5
9.9
MMSZ5244B
H4
14
13.30
14.70
9.0
15
600
0.1
10
MMSZ5245B
H5
15
14.25
15.75
8.5
16
600
0.1
11
MMSZ5246B
J1
16
15.20
16.80
7.8
17
600
0.1
12
MMSZ5247B
J2
17
16.15
17.85
7.5
19
600
0.1
13
MMSZ5248B
J3
18
17.10
18.90
7.0
21
600
0.1
14
MMSZ5249B
J4
19
18.05
19.95
6.6
23
600
0.1
14
MMSZ5250B
J5
20
19.00
21.00
6.2
25
600
0.1
15
MMSZ5251B
K1
22
20.90
23.10
5.6
29
600
0.1
17
MMSZ5252B
K2
24
22.80
25.20
5.2
33
600
0.1
18
MMSZ5253B
K3
25
23.75
26.25
5.0
35
600
0.1
19
MMSZ5254B
K4
27
25.65
28.35
5.0
41
600
0.1
21
MMSZ5255B
K5
28
26.60
29.40
4.5
44
600
0.1
21
MMSZ5256B
M1
30
28.50
31.50
4.2
49
600
0.1
23
MMSZ5257B
M2
33
31.35
34.65
3.8
58
700
0.1
25
MMSZ5258B
M3
36
34.20
37.80
3.4
70
700
0.1
27
MMSZ5259B
M4
39
37.05
40.95
3.2
80
800
0.1
30
MMSZ5260B
M5
43
40.85
45.15
3.0
93
900
0.1
33
MMSZ5261B
N1
47
44.65
49.35
2.7
105
1000
0.1
36
MMSZ5262B
N2
51
48.45
53.55
2.5
125
1100
0.1
39
MMSZ5263B
N3
56
53.20
58.80
2.2
150
1300
0.1
43
MMSZ5264B
N4
60
57.00
63.00
2.1
170
1400
0.1
46
MMSZ5265B
N5
62
58.90
65.10
2.0
185
1400
0.1
47
MMSZ5266B
P1
68
64.60
71.40
1.8
230
1600
0.1
52
MMSZ5267B
P2
75
71.25
78.75
1.7
270
1700
0.1
56
2/4
MMSZ52xxB Series
Surface Mount Zener Diodes
Vz Range: 2.4V to 75V Power Dissipation: 500mW
PD, Power Dissipation (W)
CT, Total Capacitance (pF)
Ratings and Characteristic Curves
VZ, Nominal Zener Voltage (V)
Figure 1. Power Derating Curve
Figure 2. Total Capacitance vs. Nominal Zener Voltage
Dynamic Zener Impedance (Ω)
PPK, Peak Surge Power (W)
TA, Ambient Temperature (°C)
PW, Pulse Width (ms)
VZ, Nominal Zener Voltage (V)
Figure 4. Maximum Non-repetitive Surge Power
Figure 3. Zener Voltage vs. Zener Impedance
3/4
MMSZ52xxB Series
Surface Mount Zener Diodes
Vz Range: 2.4V to 75V Power Dissipation: 500mW
Package Outline Dimensions (SOD-123)
K
C
B
E
J
A
D
H
Dimensions In Millimeters
Symbol
Dimensions In Inches
Min
Max
Min
Max
A
1.400
1.750
0.055
0.069
B
2.500
2.850
0.098
0.112
C
1.150 TYP
0.045 TYP
D
0.550 TYP
0.022 TYP
E
0.200
0.450
0.008
0.018
H
0.000
0.100
0.000
0.004
J
0.004 TYP
0.100 TYP
K
3.500
3.850
0.138
0.152
Recommended Pad Layout
0.91
1.22
2.36
4.19
www.goodarksemi.com
Unit: mm
4/4
Doc.USMMSZ52xxBxSX6.2
Oct. 2022
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