MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 22 - 2 1 of 5
www.diodes.com July 2012
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
Features
• Planar Die Construction
• 350mW Power Dissipation on FR-4 PCB
• General Purpose, Medium Current
• Ideally Suited for Automated Assembly Processes
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Notes 3 & 4)
• Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
• Case: SOT23
• Case Material: Molded Plastic, “Green” Molding Compound. UL
Flammability Classification Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminal Connections: See Diagram
• Terminals: Matte Tin Finish annealed over Alloy 42 leadframe
(Lead Free Plating). Solderable per MIL-STD-202, Method 208
• Weight: 0.008 grams (approximate)
Ordering Information (Notes 5 & 6)
Device Qualification Packaging Shipping
(Type Number)-7-F* Commercial SOT23 3000/Tape & Reel
(Type Number)Q-7-F* Automotive SOT23 3000/Tape & Reel
* Add “-7-F” to the appropriate type number in Electrical Characteristics Table from Page 2. Example: 6.2V Zener = MMBZ5234B-7-F.
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. Product manufactured with Date Code OW (week 42, 2009) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code OW are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
5. For Packaging Details, go to our website at http://www.diodes.com.
6. Selected voltages are available on 13" reels (10,000 devices per reel). Add “-13-F” to the appropriate type number in Electrical Characteristics Table from
Page 2. Example: 6.2V Zener = MMBZ5234B-13-F. Please contact your Diodes Inc. sales representative for availability.
Marking Information
Date Code Key
Year 1998 … 2002 2003 2004 … 2010 2011 2012 2013 2014 2015 2016 2017 2018
Code J … N P R … X Y Z A B C D E F
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Code 1 2 3 4 5 6 7 8 9 O N D
Top View Device Schematic
SOT23
K = SAT (Shanghai Assembly / Test site)
xx = Product Type Marking Code
See Electrical Characteristics Table
YM = Date Code Marking
Y = Year (ex: Z = 2012)
M
=
Month (ex: 9
=
September)
C = CAT (Chengdu Assembly / Test site)
xx = Product Type Marking Code
See Electrical Characteristics Table
YM = Date Code Marking
Y = Year (ex: Z = 2012)
M = Month (ex: 9 = September)
Cxx
YM
Kxx
YM
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 22 - 2 2 of 5
www.diodes.com July 2012
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Characteristic Symbol Value Unit
Forward Voltage @ IF = 10mA VF 0.9 V
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 7) PD 350 mW
Thermal Resistance, Junction to Ambient Air (Note 7) R
θ
JA 357 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Notes: 7. Mounted on FR4 PC Board with recommended pad layout which can be found on our website at ht tp://www.diodes.com.
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Type
Number Type
Code
Zener Voltage Range (Note 8) Maximum Zener
Impedance
f = 1kHz
Maximum Reverse
Leakage Current (Note 8)
VZ @ IZT I
ZT Z
ZT @ IZT ZZK @ IZK
= 0.25mA IR @ VR
Nom (V) Min (V) Max (V) mA ΩµA V
MMBZ5221B C1 2.4 2.28 2.52 20 30 1200 100 1.0
MMBZ5222B C2 2.5 2.38 2.63 20 30 1200 100 1.0
MMBZ5223B C3 2.7 2.57 2.84 20 30 1300 75 1.0
MMBZ5225B C5 3.0 2.85 3.15 20 30 1600 50 1.0
MMBZ5226B G1 3.3 3.14 3.47 20 28 1600 25 1.0
MMBZ5227B G2 3.6 3.42 3.78 20 24 1700 15 1.0
MMBZ5228B G3 3.9 3.71 4.10 20 23 1900 10 1.0
MMBZ5229B G4 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMBZ5230B G5 4.7 4.47 4.94 20 19 1900 5.0 2.0
MMBZ5231B E1 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMBZ5232B E2 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMBZ5233B E3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMBZ5234B E4 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMBZ5235B E5 6.8 6.46 7.14 20 5 750 3.0 5.0
MMBZ5236B F1 7.5 7.13 7.88 20 6 500 3.0 6.0
MMBZ5237B F2 8.2 7.79 8.61 20 8 500 3.0 6.5
MMBZ5238B F3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMBZ5239B F4 9.1 8.65 9.56 20 10 600 3.0 7.0
MMBZ5240B F5 10 9.50 10.50 20 17 600 3.0 8.0
MMBZ5241B H1 11 10.45 11.55 20 22 600 2.0 8.4
MMBZ5242B H2 12 11.40 12.60 20 30 600 1.0 9.1
MMBZ5243B H3 13 12.35 13.65 9.5 13 600 0.5 9.9
MMBZ5244B H4 14 13.30 14.70 9.0 15 600 0.1 10
MMBZ5245B H5 15 14.25 15.75 8.5 16 600 0.1 11
MMBZ5246B J1 16 15.20 16.80 7.8 17 600 0.1 12
MMBZ5248B J3 18 17.10 18.90 7.0 21 600 0.1 14
MMBZ5250B J5 20 19.00 21.00 6.2 25 600 0.1 15
MMBZ5251B K1 22 20.90 23.10 5.6 29 600 0.1 17
MMBZ5252B K2 24 22.80 25.20 5.2 33 600 0.1 18
MMBZ5254B K4 27 25.65 28.35 5.0 41 600 0.1 21
MMBZ5255B K5 28 26.60 29.40 4.5 44 600 0.1 21
MMBZ5256B M1 30 28.50 31.50 4.2 49 600 0.1 23
MMBZ5257B M2 33 31.35 34.65 3.8 58 700 0.1 25
MMBZ5258B M3 36 34.20 37.80 3.4 70 700 0.1 27
MMBZ5259B M4 39 37.05 40.95 3.2 80 800 0.1 30
Notes: 8. Short duration pulse test used to minimize self-heating effect.
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 22 - 2 3 of 5
www.diodes.com July 2012
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
0
0.1
0.2
0.3
0.4
25
050 75 100 125 150
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (W)
D
T , AMBIENT TEMPERA T URE ( C)
Fig. 1 Power Derating Curve
A
°
Note 7
0
10
20
30
40
50
01 2345678910
I, ZE
N
E
R
C
U
R
R
E
N
T
(mA)
Z
V , ZENER VOLTAGE (V)
Fi g. 2 Typi ca l Zener B r ea kdo w n C ha r act e r i s t ics
Z
0
10
20
30
0
I, ZENE
R
C
U
R
R
EN
T
(mA)
Z
V , ZENER VOLTAGE (V)
Fig. 3 Typical Zener Breakdown Characteristics
Z
10 20 30 40
T = 25°C
j
Test current I
Z
10
12
18
22
27
33 36
15
39
Nominal Zener Voltage
C , TOTAL CAP ACIT ANCE (pF)
T
10
100
1,000
10 100
1V , NOMINAL ZENER VOLTAGE (V)
Fig. 4 Typical Total Capacitance vs. Nominal Zener V oltage
Z
T = 25 °C
f = 1MHz
J
V = 1V
R
V = 2V
R
1
10
100
1,000
110100
V , ZENER VOLTAGE (V)
Fig. 5 Typical Zener Impedance Characteristics
Z
Z , ZENER IMPEDANCE ( )
Z
Ω
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 22 - 2 4 of 5
www.diodes.com July 2012
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
Package Outline Dimensions
Suggested Pad Layout
SOT23
Dim Min Max Typ
A 0.37 0.51 0.40
B 1.20 1.40 1.30
C 2.30 2.50 2.40
D 0.89 1.03 0.915
F 0.45 0.60 0.535
G 1.78 2.05 1.83
H 2.80 3.00 2.90
J 0.013 0.10 0.05
K 0.903 1.10 1.00
K1 - - 0.400
L 0.45 0.61 0.55
M 0.085 0.18 0.11
α 0° 8° -
All Dimensions in mm
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C 2.0
E 1.35
A
M
JL
D
F
BC
H
K
G
K1
XE
Y
C
Z
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 22 - 2 5 of 5
www.diodes.com July 2012
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
IMPORTANT NOTICE
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
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website, harmless against all damages.
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LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and 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.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their pro ducts and an y
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
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