MMBZ5256-V-G (Vishay)
Small Signal Zener Diodes

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MMBZ5225-V-G to MMBZ5267-V-G
Vishay Semiconductors
Small Signal Zener Diodes
Features
• Silicon planar power Zener diodes
• Standard Zener voltage tolerance is ± 5 %
with a “B” suffix (e.g.: MMBZ5225B-V-G),
suffix “C” is ± 2 % tolerance
• High temperature soldering guaranteed:
260 °C/4 x 10 s at terminals
• AEC-Q101 qualified
• Compliant to RoHS directive 2002/95/EC
and in accordance to WEEE 2002/96/EC
Mechanical Data
Case: SOT-23
Weight: approx. 8.1 mg
Packaging codes/options:
-18/10 k per 13" reel (8 mm tape), 10 k/box
-08/3 k per 7" reel (8 mm tape), 15 k/box
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Parameter
Test condition
Zener current
(see table “Characteristics”)
Power dissipation
Notes
1) On FR - 5 board using recommended solder pad layout
2) On alumina substrate
Thermal Characteristics
Tamb = 25 °C, unless otherwise specified
Parameter
Test condition
Thermal resistance junction to
ambient air
Maximum junction temperature
Storage temperature range
Note
1) On FR - 5 board using recommended solder pad layout
3
12
18078
Symbol
Ptot
Ptot
Value
225 1)
300 2)
Unit
mW
mW
Symbol
RthJA
Tj
Tstg
Value
556 1)
150
- 65 to + 175
Unit
°C/W
°C
°C
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
Document Number 85183 For technical questions within your region, please contact one of the following:
Rev. 1.1, 15-Sep-10
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
www.vishay.com
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MMBZ5256-V-G (Vishay)
Small Signal Zener Diodes

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MMBZ5225-V-G to MMBZ5267-V-G
Vishay Semiconductors
Electrical Characteristics
Tamb = 25 ° unless otherwise noted; Maximum VF = 0.9 V at IF = 10 mA
Part number
MMBZ5225-V-G
MMBZ5226-V-G
MMBZ5227-V-G
MMBZ5228-V-G
MMBZ5229-V-G
MMBZ5230-V-G
MMBZ5231-V-G
MMBZ5232-V-G
MMBZ5233-V-G
MMBZ5234-V-G
MMBZ5235-V-G
MMBZ5236-V-G
MMBZ5237-V-G
MMBZ5238-V-G
MMBZ5239-V-G
MMBZ5240-V-G
MMBZ5241-V-G
MMBZ5242-V-G
MMBZ5243-V-G
MMBZ5244-V-G
MMBZ5245-V-G
MMBZ5246-V-G
MMBZ5247-V-G
MMBZ5248-V-G
MMBZ5249-V-G
MMBZ5250-V-G
MMBZ5251-V-G
MMBZ5252-V-G
MMBZ5253-V-G
MMBZ5254-V-G
MMBZ5255-V-G
MMBZ5256-V-G
MMBZ5257-V-G
MMBZ5258-V-G
MMBZ5259-V-G
MMBZ5260-V-G
MMBZ5261-V-G
MMBZ5262-V-G
MMBZ5263-V-G
MMBZ5264-V-G
MMBZ5265-V-G
MMBZ5266-V-G
MMBZ5267-V-G
Marking
code
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
Nominal
Zener
voltage 2)
Test current
Maximum dynamic
impedance1)
VZ at IZT1
IZT1
ZZT at IZT
ZZK at IZK =
0.25 mA
V mA Ω
Ω
3 20 30 1600
3.3 20 28 1600
3.6 20 24 1700
3.9 20 23 1900
4.3 20 22 2000
4.7 20 19 1900
5.1 20 17 1600
5.6 20 11 1600
6 20 7 1600
6.2 20
7 1000
6.8 20
5 750
7.5 20
6 500
8.2 20
8 500
8.7 20
8 600
9.1 20 10 600
10 20 17 600
11 20 22 600
12 20 30 600
13 9.5 13 600
14 9 15 600
15 8.5 16 600
16 7.8 17 600
17 7.4 19 600
18 7 21 600
19 6.6 23 600
20 6.2 25 600
22 5.6 29 600
24 5.2 33 600
25 5 35 600
27 4.6 41 600
28 4.5 44 600
30 4.2 49 600
33 3.8 58 700
36 3.4 70 700
39 3.2 80 800
43 3 93 900
47 2.7 105 1000
51 2.5 125 1100
56 2.2 150 1300
60 2.1 170 1400
62 2 185 1400
68 1.8 230 1600
75 1.7 270 1700
Typical
temp.
of
coefficient
αVZ
%/°C
- 0.075
- 0.07
- 0.065
- 0.06
- 0.055
± 0.030
± 0.030
0.038
0.038
0.045
0.05
0.058
0.062
0.065
0.068
0.075
0.076
0.077
0.079
0.082
0.082
0.083
0.084
0.085
0.086
0.086
0.087
0.087
0.089
0.090
0.091
0.091
0.092
0.093
0.094
0.095
0.095
0.096
0.096
0.097
0.097
0.097
0.098
Maximum reverse
leakage current
IR VR
μA V
50 1
25 1
15 1
10 1
51
52
52
53
5 3.5
54
35
36
3 6.5
3 6.5
37
38
2 8.4
1 9.1
0.5 9.9
0.1 10
0.1 11
0.1 12
0.1 13
0.1 14
0.1 14
0.1 15
0.1 17
0.1 18
0.1 19
0.1 21
0.1 21
0.1 23
0.1 25
0.1 27
0.1 30
0.1 33
0.1 36
0.1 39
0.1 43
0.1 46
0.1 47
0.1 52
0.1 56
Notes
1)The Zener Impedance is derived from the 1 kHz AC voltage which results when an AC current having an RMS value equal to 10 % of
the Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener Impedance is measured at two points to insure a sharp knee on the
breakdown curve and to eliminate unstable units.
2) Measured at thermal equilibrium.
Document Number 85183 For technical questions within your region, please contact one of the following:
Rev. 1.1, 15-Sep-10
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
www.vishay.com
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MMBZ5256-V-G (Vishay)
Small Signal Zener Diodes

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MMBZ5225-V-G to MMBZ5267-V-G
Vishay Semiconductors
Typical Characteristics
Tamb = 25 °C, unless otherwise specified
mA
103
102
IF 10
1
TJ = 100 °C
10-1
TJ = 25 °C
10-2
10-3
10-4
10-5
0
18114
0.2 0.4 0.6 0.8
VF
Figure 1. Forward Characteristics
1V
°C/W
103
7
RthA
5
4
3
2
0.5
102 0.2
7 0.1
5
4 0.05
3 0.02
2 0.01
10 V = 0
7
5
4
3
2
1
10-5 10-4 10-3
18116
tp tp
T
T
10-2 10-1
tp
PI
1 10s
Figure 4. Pulse Thermal Resistance vs. Pulse Duration
pF
1000
7
Ctot
5
4
3
VR = 1 V
2 VR = 2 V
TJ = 25 °C
100
7 VR = 1 V
5
4
VR = 2 V
3
2
10
1
18118
2 3 45
10 2 3 4 5 100 V
V at I = 5 mA
ZZ
Figure 2. Capacitance vs. Zener Voltage
mW
250
Ptot 200
150
100
50
0
0 100 200 °C
18672
Tamb
Figure 3. Admissible Power Dissipation vs. Ambient Temperature
Document Number 85183 For technical questions within your region, please contact one of the following:
Rev. 1.1, 15-Sep-10
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
www.vishay.com
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MMBZ5256-V-G (Vishay)
Small Signal Zener Diodes

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MMBZ5225-V-G to MMBZ5267-V-G
Vishay Semiconductors
Package Dimensions in millimeters (inches): SOT-23
3.1 (0.122)
2.8 (0.110)
0.550 ref. (0.022 ref.)
0.45 (0.018)
0.35 (0.014)
0.45 (0.018)
0.35 (0.014)
0.45 (0.018)
0.35 (0.014)
1 (0.039)
0.9 (0.035)
1 (0.039)
0.9 (0.035)
Document no.: 6.541-5014.01-4
Rev. 8 - Date: 23.Sept.2009
17418
0.5 (0.020)
0.3 (0.012)
2.6 (0.102)
2.35 (0.093)
Foot print recommendation:
0.7 (0.028)
0.95 (0.037)
0.95 (0.037)
Document Number 85183 For technical questions within your region, please contact one of the following:
Rev. 1.1, 15-Sep-10
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
www.vishay.com
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MMBZ5256-V-G (Vishay)
Small Signal Zener Diodes

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Disclaimer
Legal Disclaimer Notice
Vishay
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
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damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
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Document Number: 91000
Revision: 11-Mar-11
www.vishay.com
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