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
Lead, Halogen and Antimony Free, RoHS Compliant
"Green" Device (Notes 2 and 3)
Mechanical Data
Case: SOT-23
Case Material: Molded Plastic. UL Flammability Classification
Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020D
Terminal Connections: See Diagram
Terminals: Solderable per MIL-STD-202, Method 208
Lead Free Plating (Matte Tin Finish annealed over Alloy 42
leadframe).
Marking Information: See Page 4
Ordering Information: See Page 4
Weight: 0.008 grams (approximate)
Top View Device Schematic
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 350 mW
Thermal Resistance, Junction to Ambient Air (Note 1) RθJA 357 °C/W
Operating and Storage Temperature Range TJ, TSTG -65 to +150 °C
Notes: 1. Mounted on FR4 PC Board with recommended pad layout which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf
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.
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 20 - 2 1 of 4
www.diodes.com June 2008
© Diodes Incorporated
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MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 20 - 2 2 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
Electrical Characteristics @TA = 25°C unless otherwise specified
Zener Voltage Range (Note 4) Maximum Zener
Impedance (Note 5) Maximum Reverse
Leakage Current (Note 4)
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
MMBZ5221B KC1 2.4 2.28 2.52 20 30 1200 100 1.0
MMBZ5222B KC2 2.5 2.38 2.63 20 30 1200 100 1.0
MMBZ5223B KC3 2.7 2.57 2.84 20 30 1300 75 1.0
MMBZ5225B KC5 3.0 2.85 3.15 20 30 1600 50 1.0
MMBZ5226B KG1 3.3 3.14 3.47 20 28 1600 25 1.0
MMBZ5227B KG2 3.6 3.42 3.78 20 24 1700 15 1.0
MMBZ5228B KG3 3.9 3.71 4.10 20 23 1900 10 1.0
MMBZ5229B KG4 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMBZ5230B KG5/8E 4.7 4.47 4.94 20 19 1900 5.0 2.0
MMBZ5231B KE1 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMBZ5232B KE2 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMBZ5233B KE3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMBZ5234B KE4 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMBZ5235B KE5 6.8 6.46 7.14 20 5 750 3.0 5.0
MMBZ5236B KF1/8L 7.5 7.13 7.88 20 6 500 3.0 6.0
MMBZ5237B KF2 8.2 7.79 8.61 20 8 500 3.0 6.5
MMBZ5238B KF3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMBZ5239B KF4 9.1 8.65 9.56 20 10 600 3.0 7.0
MMBZ5240B KF5 10 9.50 10.50 20 17 600 3.0 8.0
MMBZ5241B KH1 11 10.45 11.55 20 22 600 2.0 8.4
MMBZ5242B KH2/8S 12 11.40 12.60 20 30 600 1.0 9.1
MMBZ5243B KH3 13 12.35 13.65 9.5 13 600 0.5 9.9
MMBZ5244B KH4 14 13.30 14.70 9.0 15 600 0.1 10
MMBZ5245B KH5 15 14.25 15.75 8.5 16 600 0.1 11
MMBZ5246B KJ1 16 15.20 16.80 7.8 17 600 0.1 12
MMBZ5248B KJ3 18 17.10 18.90 7.0 21 600 0.1 14
MMBZ5250B KJ5 20 19.00 21.00 6.2 25 600 0.1 15
MMBZ5251B KK1 22 20.90 23.10 5.6 29 600 0.1 17
MMBZ5252B KK2 24 22.80 25.20 5.2 33 600 0.1 18
MMBZ5254B KK4 27 25.65 28.35 5.0 41 600 0.1 21
MMBZ5255B KK5 28 26.60 29.40 4.5 44 600 0.1 21
MMBZ5256B KM1 30 28.50 31.50 4.2 49 600 0.1 23
MMBZ5257B KM2 33 31.35 34.65 3.8 58 700 0.1 25
MMBZ5258B KM3 36 34.20 37.80 3.4 70 700 0.1 27
MMBZ5259B KM4 39 37.05 40.95 3.2 80 800 0.1 30
Notes: 4. Short duration pulse test used to minimize self-heating effect.
5. f = 1KHz.
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
°
0
10
20
30
40
50
01 234567891
I, ZE
0
N
E
R
C
U
R
R
E
N
T
(mA)
Z
V , ZENER VOLTAGE (V)
Fi g. 2 Typic al 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 VOLT AGE (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 ACITANCE (pF)
T
10
100
1,000
10 100
1V , NOMINAL Z ENER VOLTAGE (V)
Fig . 4 Typical Tota l Capacit ance vs. N om i nal Zener Voltage
Z
T = 25 °C
j
V = 1V
R
V = 2V
R
1
10
100
1,000
110
V , ZENER VOLTAGE (V)
Fig. 5 Typical Zener Impedance Characteristics
Z
100
Z , ZENER IMPEDANCE ( )
Z
Ω
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 20 - 2 3 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221B - MMBZ5259B
Ordering Information (Note 6)
Device Packaging Shipping
(Type Number)-7-F* SOT-23 3000/Tape & Reel
* Add “-7-F” to the appropriate type number in Electrical Characteristics Table from Page 2 exam ple: 6.2V Zener = MMBZ5234B-7-F.
Notes: 6. For packaging details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
xxx
YM
xxx = Product Type Marking Code
(See Electrical Characteristics Table)
YM = Date Code Marking
Y = Year (ex: N = 2002)
M = Month (ex: 9 = September)
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
Package Outline Dimensions
MMBZ5221B - MMBZ5259B
Document number: DS18011 Rev. 20 - 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.
A
M
JL
DF
BC
H
K
G
SOT-23
Dim Min Max
A 0.37 0.51
B 1.20 1.40
C 2.30 2.50
D 0.89 1.03
F 0.45 0.60
G 1.78 2.05
H 2.80 3.00
J 0.013 0.10
K 0.903 1.10
L 0.45 0.61
M 0.085 0.180
α 0° 8°
All Dimensions in mm
XE
Y
C
Z
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C 2.0
E 1.35