Zeners (MMBZ5221B - MMBZ5257B)
MMBZ5221B-MMBZ5257B Rev. A
2002 Fairchild Semiconductor Corporation
T olerance: B = 5%
Electrical Characteristics TA = 25°C unless otherwise noted
Absolute Maximum Ratings* TA = 25°C unless otherwise noted
Symbol
Parameter
Value
Units
PD Power Dissipation 350 mW
TSTG Storage Temperature Range -55 to +150 °C
TJ Operating Junction Temperature + 150 °C
*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.
Device Mark VZ (V) ZZ(Ω
ΩΩ
Ω) IZ(mA) ZZK(Ω
ΩΩ
Ω) IZK(mA) IR(µ
µµ
µA) VR(V)
MMBZ 5221B
MMBZ 5223B
MMBZ 5226B
MMBZ 5227B
MMBZ 5228B
MMBZ 5229B
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
MMBZ 5230B
MMBZ 5231B
MMBZ 5232B
MMBZ 5233B
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
MMBZ 5234B
MMBZ 5235B
MMBZ 5236B
MMBZ 5237B
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
MMBZ 5238B
MMBZ 5239B
MMBZ 5240B
MMBZ 5241B
MMBZ 5242B
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
9.1
VF Foward Voltage = 0.9 V Maximum @ IF = 10 mA for all MMBZ 5200 series
Zeners
MMBZ5221B - MMBZ5257B
SOT-23
3
1
2
@@@
Zeners (MMBZ5221B - MMBZ5257B)
MMBZ5221B-MMBZ5257B Rev. A
2002 Fairchild Semiconductor Corporation
Electrical Characteristics (continued) T A = 25°C unless otherwise noted
Zeners (MMBZ5221B - MMBZ5257B)
(continued)
Device Mark VZ(V) ZZ(Ω
ΩΩ
Ω) IZ(mA) ZZK(Ω
ΩΩ
Ω) IZK(mA) IR(nA) VR(V)
MMBZ 5243B
MMBZ 5244B
MMBZ 5245B
MMBZ 5246B
MMBZ 5247B
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
500
100
100
100
100
9.9
10
11
12
13
MMBZ 5248B
MMBZ 5249B
MMBZ 5250B
MMBZ 5251B
MMBZ 5252B
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
100
100
100
100
100
14
14
15
17
18
MMBZ 5253B
MMBZ 5254B
MMBZ 5255B
MMBZ 5256B
MMBZ 5257B
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
700
0.25
0.25
0.25
0.25
0.25
100
100
100
100
100
19
21
21
23
25
V
F Foward Voltage = 0.9 V Maximum @ IF = 10 mA for all MMBZ 5200 series
Zeners (MMBZ5221B - MMBZ5257B)
MMBZ5221B-MMBZ5257B Rev. A
2002 Fairchild Semiconductor Corporation
Typical Characteristics
Zener Current v s. Zener Impedence
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
3.3 Z ener Voltage vs. T emperatur e
12 5102030
1
2
3
4
5
I - Z ENER CURRE NT (mA)
V - ZENER VOLT AGE (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
Zener Current vs. Zener Voltage
12 5102030
5
10
15
20
25
30
35
I - ZENER 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
5.1 Zener Voltage vs. Temperature
12 5102030
4
4.5
5
5.5
6
I - ZENER CU RRENT (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 = 100 C
º
A
T = 25 C
º
A
T = 125 C
º
A
12 Zener Voltage vs. Zener Temperature
12 5102030
0
5
10
15
I - ZENER CU RRE NT ( mA)
V - ZENER VOLT AGE (V)
T = -25 C
º
A
Z
Z
V = 12.0V
Z
T = 85 C
º
A
T = 100 C
º
A
T = 25 C
º
A
T = 125 C
º
A
33 Zene r Volta ge vs. Zener Te m pe ra t ure
12 5102030
20
25
30
35
40
I - ZENE R 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
Zeners (MMBZ5221B - MMBZ5257B)
(continued)
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 PATENT
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
FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL 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 STATUS 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.
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In Design
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