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MMBZ5221B - MMBZ5257B — Zener Diodes
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B - MMBZ5257B Rev. 1.5
November 2015
MMBZ5221B - MMBZ5257B
Zener Diodes
Absolute Maximum Ratings(1, 2)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the re co mmen ded operating conditions and s tres si ng the parts to these level s i s not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at TA = 25°C unless otherwise noted.
Note:
1.These ratings are based on a maximum junction temperature of 150°C.
2.These are ste ady sta te limit s. The fac tory shoul d be consult ed on applica tions inv olving pul sed or low duty cy cle
operations.
3. Device mounted on FR-4 PCB, board size = 76.2 mm x 114.3 mm
Symbol Parameter Value Unit
PDPower Dissipation Referencing RθJA, TA = 25°C 250 mW
Referencing ψJL, TL = 25°C 550
RθJA Junction-to-Ambient Thermal Resistance(3) 465 °C/W
ψJL Junction-to-Lead Thermal Characteristics
(with reference to Cathode) 220 °C/W
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
MMBZ5221B - MMBZ5257B — Zener Diodes
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B - MMBZ5257B Rev. 1.5 2
Electrical Characteristics
Values are at TA = 25°C unless otherwise noted.
Device Mark VZ(V) @ IZ(mA) ZZ(Ω) @ IZ(mA) ZZK(Ω) @ IZK(mA) IR(μA) @ VR(V)
Min. Nor. Max. IZ(mA)
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
20
20
20
20
20
20
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
20
20
20
20
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
20
20
20
20
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
20
20
20
20
20
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
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
9.5
9.0
8.5
7.8
7.4
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
7.0
6.6
6.2
5.6
5.2
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
5.0
4.6
4.5
4.2
3.8
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 = 0.9 V Maximum at IF = 10 mA for all MMBZ5200 series
MMBZ5221B - MMBZ5257B — Zener Diodes
© 2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B - MMBZ5257B Rev. 1.5 3
Typical Performance Characteristics
Figure 1. Zener Current vs. Zener Voltage Figure 2. Zener Current vs. Zener Impedence
Figure 3. 3.3 Zener Voltage vs. Temperature Figure 4. 5.1 Zener Voltage vs. Temperature
Figure 5. 12 Zener Voltage vs. Zener Temperature Figure 6. 33 Zener Voltage vs. Zener Temperature
12 5102030
5
10
15
20
25
30
35
I - ZENER CURRENT (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 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 - ZENER CURRENT (mA)
V - ZENER 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 - ZENER CURRENT (mA)
V - ZENER VOLTAGE (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 5102030
0
5
10
15
I - ZENER CURRENT (mA)
V - ZENER VOLTAGE (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
12 5102030
20
25
30
35
40
I - ZENER CURRENT (mA)
V - ZENER VOLTAGE (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
www.onsemi.com
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ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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