MMSZ5221B - MMSZ5259B
500mW SURFACE MOUNT ZENER DIODE
Features
• 500mW Power Dissipation
• General Purpose, Medium Current
• Ideally Suited for Automated Assembly Processes
• Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 2 and 3)
• Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
• Case: SOD-123
• Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
• Moisture Sensitivity: Level 1 per J-STD-020D
• Terminals: Solderable per MIL-STD-202, Method 208
• Lead Free Plating (Matte Tin Finish annealed over Alloy 42
leadframe)
• Polarity: Cathode Band
• Ordering Information: See Page 3
• Marking Information: See Page 3
• Weight: 0.01 grams (approximate)
Top View
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 1) PD 500 mW
Thermal Resistance, Junction to Ambient Air (Note 1) RθJA 350 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Notes: 1. Device mounted on ceramic PCB; 7.6 mm x 9.4 mm x 0.87 mm with pad areas 25 mm2.
2. No purposefully added lead. Halogen and Antimony Free.
3. Product manufactured with Data Code V9 (week 33, 2008) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code V9 are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
MMSZ5221B - MMSZ5259B
Document number: DS18010 Rev. 22 - 2 1 of 4
www.diodes.com June 2008
© Diodes Incorporated
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MMSZ5221B - MMSZ5259B
Electrical Characteristics @TA = 25°C unless otherwise specified
Zener Voltage Range (Note 5) Test
Current Maximum Zener
Impedance (Note 4) Maximum Reverse
Leakage Current (Note 5)
MMSZ5221B - MMSZ5259B
Document number: DS18010 Rev. 22 - 2 2 of 4
www.diodes.com June 2008
© Diodes Incorporated
VZ @ IZT IZT ZZT @ IZT ZZK @ IZK
= 0.25mA IR @ VR
Type
Number Type
Code
Nom (V) Min (V) Max (V) mA Ω μA V
MMSZ5221B C1 2.4 2.28 2.52 20 30 1200 100 1.0
MMSZ5223B C3 2.7 2.57 2.84 20 30 1300 75 1.0
MMSZ5225B C5 3.0 2.85 3.15 20 30 1600 50 1.0
MMSZ5226B G1 3.3 3.14 3.47 20 28 1600 25 1.0
MMSZ5227B G2 3.6 3.42 3.78 20 24 1700 15 1.0
MMSZ5228B G3 3.9 3.71 4.10 20 23 1900 10 1.0
MMSZ5229B G4 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMSZ5230B G5 4.7 4.47 4.94 20 19 1900 5.0 2.0
MMSZ5231B E1 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMSZ5232B E2 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMSZ5233B E3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMSZ5234B E4 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMSZ5235B E5 6.8 6.46 7.14 20 5 750 3.0 5.0
MMSZ5236B F1 7.5 7.13 7.88 20 6 500 3.0 6.0
MMSZ5237B F2 8.2 7.79 8.61 20 8 500 3.0 6.5
MMSZ5238B F3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMSZ5239B F4 9.1 8.65 9.56 20 10 600 3.0 7.0
MMSZ5240B F5 10 9.50 10.50 20 17 600 3.0 8.0
MMSZ5241B H1 11 10.45 11.55 20 22 600 2.0 8.4
MMSZ5242B H2 12 11.40 12.60 20 30 600 1.0 9.1
MMSZ5243B H3 13 12.35 13.65 9.5 13 600 0.5 9.9
MMSZ5245B H5 15 14.25 15.75 8.5 16 600 0.1 11
MMSZ5246B J1 16 15.20 16.80 7.8 17 600 0.1 12
MMSZ5248B J3 18 17.10 18.90 7.0 21 600 0.1 14
MMSZ5250B J5 20 19.00 21.00 6.2 25 600 0.1 15
MMSZ5251B K1 22 20.90 23.10 5.6 29 600 0.1 17
MMSZ5252B K2 24 22.80 25.20 5.2 33 600 0.1 18
MMSZ5254B K4 27 25.65 28.35 5.0 41 600 0.1 21
MMSZ5255B K5 28 26.60 29.40 4.5 44 600 0.1 21
MMSZ5256B M1 30 28.50 31.50 4.2 49 600 0.1 23
MMSZ5257B M2 33 31.35 34.65 3.8 58 700 0.1 25
MMSZ5258B M3 36 34.20 37.80 3.4 70 700 0.1 27
MMSZ5259B M4 39 37.05 40.95 3.2 80 800 0.1 30
Notes: 4. f = 1KHz.
5. Short duration pulse test used to minimize self-heating effect.
0
0.1
0.2
0.3
0.4
0.5
25050
75 100 125 150
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N
(W)
D
T , AMBIENT TEMPERA TURE ( C)
Fig. 1 Power Derating Curve
A
°
0.6
Note 1
0
10
20
30
40
50
01 2 3 4 5 6 7891
I, ZENE
0
R
C
U
R
R
EN
T
(mA)
Z
V , ZENER VOLTAGE (V)
Fig. 2 Typical Zener Breakdown Characteristics
Z
MMSZ5221B - MMSZ5259B
C , T OTAL CAPACITANCE (pF)
T
10
100
1,000
10 100
1V , NOMINAL ZENER VOLTAGE (V)
Fig. 4 Typical Total Capacitance vs. Nominal Zener Voltage
Z
0
10
20
30
0
I, ZENE
R
C
U
R
R
EN
T
(mA)
Z
V , ZENER VOL TAGE (V)
Fig. 3 Typical Zener Br eakdow n C haracte r istics
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
1
10
100
1,000
110
V , ZENER VOLTAGE (V)
Fig. 5 T ypical Zener Impedance Characteristics
Z
100
Z , ZENER IMPEDANCE ( )
Z
Ω
Ordering Information (Note 6)
MMSZ5221B - MMSZ5259B
Document number: DS18010 Rev. 22 - 2 3 of 4
www.diodes.com June 2008
© Diodes Incorporated
Part Number Case Packaging
(Type Number)-7-F* SOD-123 3000/Tape & Reel
*Add “-7-F” to the appropriate type number in Electrical Characteristics Table. Example: 6.2V Zener = MMSZ5234B-7-F.
Notes: 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
xx = Product Type Marking Code
(See Electrical Characteristics Table)
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)
XX
YM
Date Code Key
Year 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Code J K L M N P R S T U V W X Y Z A B C
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
MMSZ5221B - MMSZ5259B
Package Outline Dimensions
MMSZ5221B - MMSZ5259B
Document number: DS18010 Rev. 22 - 2 4 of 4
www.diodes.com June 2008
© Diodes Incorporated
Suggested Pad Layout
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to any product herein. Diodes Incorporated does not assume an y liability arising out of the application or use of any product
described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website,
harmless against all damages. LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written
approval of the President of Diodes Incorporated.
K
L
M
C
H
BA
SOD-123
Dim Min Max
A 0.55 Typ
B 1.40 1.70
C 3.55 3.85
H 2.55 2.85
J 0.00 0.10
K 1.00 1.35
L 0.25 0.40
M 0.10 0.15
α 0 8°
All Dimensions in mm
Z
X
C
G
Y
Dimensions Value (in mm)
Z 4.9
G 2.5
X 0.7
Y 1.2
C 3.7
