©2004 Fairchild Semiconductor Corporation MMBZ5221B-MMBZ5257B, Rev. A2
Zeners MMBZ5221B-MMBZ5257B
Electrical Characteristics TA=25°C unless otherwise noted
Device Mark VZ (V) ZZ(Ω
ΩΩ
Ω) @ IZ (mA) ZZK(Ω
ΩΩ
Ω) @ IZK (mA) IR (µ
µµ
µA) @ VR (V)
MMBZ5221B
MMBZ5223B
MMBZ5226B
MMBZ5227B
MMBZ5228B
MMBZ5229B
18A
18C
8A
8B
8C
8D
2.4
2.7
3.3
3.6
3.9
4.3
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
4.7
5.1
5.6
6.0
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
6.2
6.8
7.5
8.2
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
8.7
9.1
10
11
12
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
8.1
MMBZ5243B
MMBZ5244B
MMBZ5245B
MMBZ5246B
MMBZ5247B
8T
8U
8V
8W
8X
13
14
15
16
17
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
VF Forward Voltage = 0.9V Maximum @ IF = 10mA for all MMBZ5200 series
Zeners
MMBZ5221B-MMBZ5257B
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.
Symbol Parameter Value Units
PDPower Dissipation 350 mW
TSTG Storage Temperature Range -55 to +150 °C
TJOperating Junction Temperature +150 °C
Tolerance = 5%
1
2
3
SOT-23
CONNECTION
DIAGRAM
1
3
2 NC
©2004 Fairchild Semiconductor Corporation MMBZ5221B-MMBZ5257B, Rev. A2
Zeners MMBZ5221B-MMBZ5257B
Electrical Characteristics TA=25°C unless otherwise noted
Device Mark VZ (V) ZZ(Ω
ΩΩ
Ω) @ IZ (mA) ZZK(Ω
ΩΩ
Ω) @ IZK (mA) IR (µ
µµ
µA) @ VR (V)
MMBZ5248B
MMBZ5249B
MMBZ5250B
MMBZ5251B
MMBZ5252B
8Y
8Z
81A
81B
81C
18
19
20
22
24
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
25
27
28
30
33
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
©2004 Fairchild Semiconductor Corporation MMBZ5221B-MMBZ5257B, Rev. A2
Zeners MMBZ5221B-MMBZ5257B
Typical 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 Temperat ure 33 Zener Voltage vs. Zener Temperat ure
12 5102030
5
10
15
20
25
30
35
I - Z ENE R CURRE N T ( m A )
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 20
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 5102030
1
2
3
4
5
I - Z ENER CU RRE NT (mA )
V - ZENE R VOLTAGE ( V)
T = -25 C
º
A
Z
Z
V = 3.3V
Z
T = 85 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 CURRENT (mA)
V - ZE NE R VOLTAGE (V )
T = -25 C
º
A
Z
Z
V = 5.1 V
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 RRENT ( mA)
V - ZENER VOLTA GE (V)
T = -25 C
º
A
Z
Z
V = 12.0 V
Z
T = 85 C
º
A T = 100 C
º
A
T = 25 C
º
A
T = 125 C
º
A
12 5102030
20
25
30
35
40
I - ZE NER CURR ENT (mA)
V - ZE NER VO LTAG 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
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY , FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY
ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT
CONVEY ANY LICENSE UNDER ITS P ATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROV AL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body, or (b) support or sustain life, or (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in significant injury to the
user.
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
PRODUCT ST A TUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information
Preliminary
No Identification Needed
Obsolete
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
Formative or
In Design
First Production
Full Production
Not In Production
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