MMSZ5221B-MMSZ5259B
Silicon Planar Zener Diodes
2
■ Features
●
• Total power dissipation: Max. 500mW.
●
• Wide zener reverse voltage range 2.4V to 39V.
1.Cathode
2.Anode
1
●
• Small plastic package suitable for surface mounted design.
●
• Tolerance approximately±5%
Simplified outline(SOD-123)
■ Absolute Maximum Ratings And Characteristics Ta = 25℃
Parameter
Symbol
Value
Unit
P tot
500
mW
RθJA
340
°C/W
T j , T stg
-55 ~ +150
°C
Power Dissipation
Typical thermal resistance juncting to ambient
(1)
Operating and Storage Temperature Range
(1) Thermal resistance from junction to ambient at P.C.B. mounted with 2 .0" X 2.0" (5 X 5 cm) copper areas pads.
Transient Thermal Impedance( °C /W)
Fig.1 Maximum Continuous Power Derating
0.6
Power Dissipation ( W )
0.5
0.4
0.3
0.2
0.1
0.0
25
50
75
100
125
150
175
T c ,Case Temperature (°C)
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Fig.2 Typical Transient Thermal Impedance
2000
1000
100
10
0.01
0.1
1
10
t, Pulse Duration(sec)
1
100
MMSZ5221B-MMSZ5259B
Zener Voltage Range (1)
Type
Mark
V ZT(at I ZT)
Min(V) Nom(V) Max(V)
MMSZ5221B
C1
2.28
Reverse Current
Dynamic Impedance
I ZT
Z ZT(at I ZT)
I ZK
Z ZK(at I ZK)
IR
at V R
(mA)
Max (Ω)
(mA)
Max (Ω)
Max(uA)
(V)
0.25
1200
100
1
2.4
2.52
20
30
MMSZ5222B
C2
2.38
2.5
2.63
20
30
0.25
1250
100
1
MMSZ5223B
C3
2.57
2.7
2.84
20
30
0.25
1300
75
1
MMSZ5225B
C5
2.85
3
3.15
20
30
0.25
1600
50
1
MMSZ5226B
D1
3.14
3.3
3.47
20
28
0.25
1600
25
1
MMSZ5227B
D2
3.42
3.6
3.78
20
24
0.25
1700
15
1
MMSZ5228B
D3
3.71
3.9
4.1
20
23
0.25
1900
10
1
MMSZ5229B
D4
4.09
4.3
4.52
20
22
0.25
2000
5
1
MMSZ5230B
D5
4.47
4.7
4.94
20
19
0.25
1900
5
2
MMSZ5231B
E1
4.85
5.1
5.36
20
17
0.25
1600
5
2
MMSZ5232B
E2
5.32
5.6
5.88
20
11
0.25
1600
5
3
MMSZ5234B
E4
5.89
6.2
6.51
20
7
0.25
1000
5
4
MMSZ5235B
E5
6.46
6.8
7.14
20
5
0.25
750
3
5
MMSZ5236B
F1
7.13
7.5
7.88
20
6
0.25
500
3
6
MMSZ5237B
F2
7.79
8.2
8.61
20
8
0.25
500
3
6
MMSZ5239B
F4
8.65
9.1
9.56
20
10
0.25
600
3
6.5
MMSZ5240B
F5
9.5
10
10.5
20
17
0.25
600
3
8
MMSZ5241B
H1
10.45
11
11.55
20
22
0.25
600
3
8.4
MMSZ5242B
H2
11.4
12
12.6
20
30
0.25
600
2
9.1
MMSZ5243B
H3
12.35
13
13.65
9.5
13
0.25
600
1
9.9
MMSZ5245B
H5
14.25
15
15.75
8.5
16
0.25
600
0.5
11
7.8
17
0.25
600
0.1
12
7
21
0.25
600
0.1
14
MMSZ5246B
J1
15.2
16
16.8
MMSZ5248B
J3
17.1
18
18.9
MMSZ5250B
J5
19
20
21
6.2
25
0.25
600
0.1
15
MMSZ5251B
K1
20.9
22
23.1
5.6
29
0.25
600
0.1
17
MMSZ5252B
K2
22.8
24
25.2
5.2
33
0.25
600
0.1
18
MMSZ5254B
K4
25.65
27
28.35
5
41
0.25
600
0.1
21
MMSZ5255B
K5
26.6
28
29.4
4.5
44
0.25
600
0.1
21
MMSZ5256B
M1
28.5
30
31.5
4.2
49
0.25
600
0.1
23
MMSZ5257B
M2
31.35
33
34.65
3.8
58
0.25
700
0.1
25
MMSZ5258B
M3
34.2
36
37.8
3.4
70
0.25
700
0.1
27
MMSZ5259B
M4
37.05
39
40.95
3.2
80
0.25
800
0.1
30
(1) V ZT is tested with pulses (20 ms)
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2
MMSZ5221B-MMSZ5259B
■ SOD-123
A
D
b
E
A1
C
∠ALL ROUND
L1
E1
SOD-123 mechanical data
A
C
D
E
E1
L1
b
A1
max
1.3
0.22
1.8
2.8
3.9
0.45
0.7
0.2
min
0.9
0.09
1.5
2.5
3.6
0.25
0.5
max
51
8.7
71
110
154
18
28
min
35
3.5
59
98
142
10
20
UNIT
∠
mm
9°
mil
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3
8
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