MMBZ5221B-MMBZ5257B — Zener Diodes
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B-MMBZ5257B Rev. B0 1
November 2011
MMBZ5221B-MMBZ5257B
Zener Diodes
Absolute Maximum Ratings * TA = 25°C unless otherwise noted
* These ratings are limiting values above which the serviceability of the diode may be impaired.
NOTES:
1)These ratings are based on a maximum junction temperature of 150 degrees C.
2)These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle
operations.
Electrical Characteristics TA = 25°C unless otherwise noted
Symbol Parameter Value Units
PDPower Dissipation 350 mW
TSTG Storage Temperature Range -55 to +150 °C
TJOperating Junction Temperature +150 °C
Device Mark VZ (V) ZZ(Ω) @ IZ (mA) ZZK(Ω) @ IZK(mA) IR (μA) @ VR (V)
Min. Nor. Max.
MMBZ5221B
MMBZ5223B
MMBZ5226B
MMBZ5227B
MMBZ5228B
MMBZ5229B
18A
18C
8A
8B
8C
8D
2.28
2.565
3.135
3.42
3.705
4.085
2.4
2.7
3.3
3.6
3.9
4.3
2.52
2.835
3.465
3.78
4.095
4.515
30
30
28
24
23
22
20
20
20
20
20
20
1,200
1,300
1,600
1,700
1,900
1,000
0.25
0.25
0.25
0.25
0.25
0.25
100
75
25
15
10
5.0
1.0
1.0
1.0
1.0
1.0
1.0
MMBZ5230B
MMBZ5231B
MMBZ5232B
MMBZ5233B
8E
8F
8G
8H
4.465
4.845
5.32
5.7
4.7
5.1
5.6
6.0
4.935
5.355
5.88
6.3
19
17
11
7.0
20
20
20
20
1,900
1,600
1,600
1,600
0.25
0.25
0.25
0.25
5.0
5.0
5.0
5.0
2.0
2.0
3.0
3.5
MMBZ5234B
MMBZ5235B
MMBZ5236B
MMBZ5237B
8J
8K
8L
8M
5.89
6.46
7.125
7.79
6.2
6.8
7.5
8.2
6.51
7.14
7.875
8.61
7.0
5.0
6.0
8.0
20
20
20
20
1,000
750
500
500
0.25
0.25
0.25
0.25
5.0
3.0
3.0
3.0
4.0
5.0
6.0
6.5
MMBZ5238B
MMBZ5239B
MMBZ5240B
MMBZ5241B
MMBZ5242B
8N
8P
8Q
8R
8S
8.265
8.645
9.5
10.45
11.4
8.7
9.1
10
11
12
9.135
9.555
10.5
11.55
12.6
8.0
10
17
22
30
20
20
20
20
20
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
3.0
3.0
3.0
2.0
1.0
6.5
7.0
8.0
8.4
9.1
VF Forward Voltage = 0.9V Maximum @ IF = 10mA for all MMBZ5200 series
Tolerance = 5%
1
2
3
SOT-23
CONNECTION
DIAGRAM
1
3
2 NC
MMBZ5221B-MMBZ5257B — Zener Diodes
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B-MMBZ5257B Rev. B0 2
Electrical Characteristics (Continued) TA = 25°C unless otherwise note d
Device Mark VZ (V) ZZ(Ω) @ IZ (mA) ZZK(Ω) @ IZK(mA) IR (μA) @ VR (V)
Min. Nor. Max.
MMBZ5243B
MMBZ5244B
MMBZ5245B
MMBZ5246B
MMBZ5247B
8T
8U
8V
8W
8X
12.35
13.3
14.25
15.2
16.15
13
14
15
16
17
13.65
14.7
15.75
16.8
17.85
13
15
16
17
19
9.5
9.0
8.5
7.8
7.4
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
0.5
0.1
0.1
0.1
0.1
9.9
10
11
12
13
MMBZ5248B
MMBZ5249B
MMBZ5250B
MMBZ5251B
MMBZ5252B
8Y
8Z
81A
81B
81C
17.1
18.05
19
20.9
22.8
18
19
20
22
24
18.9
19.95
21
23.1
25.2
21
23
25
29
33
7.0
6.6
6.2
5.6
5.2
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
14
14
15
17
18
MMBZ5253B
MMBZ5254B
MMBZ5255B
MMBZ5256B
MMBZ5257B
81D
81E
81F
81G
81H
23.75
25.65
26.6
28.5
31.35
25
27
28
30
33
26.25
28.35
29.4
31.5
34.65
35
41
44
49
58
5.0
4.6
4.5
4.2
3.8
600
600
600
600
600
0.25
0.25
0.25
0.25
0.25
0.1
0.1
0.1
0.1
0.1
19
21
21
23
25
VF Forward Voltage = 0.9V Maximum @ IF = 10mA for all MMBZ5200 series
MMBZ5221B-MMBZ5257B — Zener Diodes
© 2011 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B-MMBZ5257B Rev. B0 3
Typical Performance Characteristics
Zener Current vs. Zener Voltage Zener Current vs. Zener Impedence
3.3 Zener Voltage vs. Temperature 5.1 Zener Voltage vs. Temperature
12 Zener Voltage vs. Zener Temperature 33 Zener Voltage vs. Zener Temperature
12 5102030
5
10
15
20
25
30
35
I - Z ENE R CU RRE NT (mA)
V - ZENER VOLTAGE (V)
T = 25 C
º
A
Z
Z
V = 12.0V
Z
V = 3.3V
Z
V = 5.1V
Z
V = 33.0V
Z
0.1 0.2 0.5 1 2 5 10 2
0
1
2
5
10
20
50
100
200
500
1000
2000
5000
I - ZENER CURRENT (mA)
Z - IMPEDANCE (ohms)
T = 25 C
º
A
Z
Z
V = 3.3V
Z
V = 5.1V
Z
V = 12.0V
Z
V = 33.0V
Z
12 510203
0
1
2
3
4
5
I - Z E NER CU RRENT (mA)
V - ZENE R VOLTA GE (V)
T = -25 C
º
A
Z
Z
V = 3.3V
Z
T = 8 5 C
º
A
T = 100 C
º
A
T = 25 C
º
A
T = 125 C
º
A
12 5102030
4
4.5
5
5.5
6
I - ZEN ER CURR ENT (mA)
V - ZE NE R VOLTAG E (V)
T = -25 C
º
A
Z
Z
V = 5.1V
Z
T = 85 C
º
A
T = 1 00 C
º
A
T = 25 C
º
A
T = 1 25 C
º
A
12 5102030
0
5
10
15
I - Z EN ER CU RRE NT ( m A)
V - ZENER VOL T AGE (V)
T = - 25 C
º
A
Z
Z
V = 12.0V
Z
T = 85 C
º
A T = 1 00 C
º
A
T = 25 C
º
A
T = 1 25 C
º
A
12 5102030
20
25
30
35
40
I - ZENER CURRENT (mA)
V - ZE N E R VOLTAG E ( V )
T = -25 C
º
A
Z
Z
V = 33.0V
Z
T = 85 C
º
A
T = 100 C
º
A
T = 25 C
º
A
T = 125 C
º
A
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