MMBZ5221BS - MMBZ5259BS
200mW SURFACE MOUNT ZENER DIODE
Features
• Planar Die Construction
• Dual Isolated Zeners in Ultra-Small Surface Mount Package
• Ideally Suited for Automated Assembly Processes
• Lead Free/RoHS Compliant (Note 2)
• "Green" Device (Note 3 and 4)
Mechanical Data
• Case: SOT-363
• 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: See Diagram
• Marking Information: See Page 4
• Ordering Information: See Page 4
• Weight: 0.006 grams (approximate)
C
1
A
1
C
2
A
2
NC
NC
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 200 mW
Thermal Resistance, Junction to Ambient Air (Note 1) RθJA 625 °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.
3. Diodes Inc.'s "Green" policy can be found on our website at http://www.diodes.com/products/lead_free/index.php.
4. Product manufactured with Date Code UO (week 40, 2007) and newer are built with Green Molding Compound. Product manufactured prior to Date
Code UO are built with Non-Green Molding Compound and may contain Halogens or Sb2O3 Fire Retardants.
MMBZ5221BS - MMBZ5259BS
Document number: DS31039 Rev. 15 - 2 1 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221BS - MMBZ5259BS
Document number: DS31039 Rev. 15 - 2 2 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221BS - MMBZ5259BS
Electrical Characteristics @TA = 25°C unless otherwise specified
Zener Voltage Range (Note 5) Maximum Zener
Impedance (Note 6) Maximum Reverse
Leakage Current (Note 5)
VZ @ IZT IZT ZZT @ IZT ZZK @ IZK
= 0.25mA IR @ VR
Type
Number Marking
Code
Nom (V) Min (V) Max (V) mA Ω μA V
MMBZ5221BS KC1 2.4 2.28 2.52 20 30 1200 100 1.0
MMBZ5223BS KC3 2.7 2.57 2.84 20 30 1300 75 1.0
MMBZ5225BS KC5 3.0 2.85 3.15 20 30 1600 50 1.0
MMBZ5226BS KG1 3.3 3.14 3.47 20 28 1600 25 1.0
MMBZ5227BS KG2 3.6 3.42 3.78 20 24 1700 15 1.0
MMBZ5228BS KG3 3.9 3.71 4.10 20 23 1900 10 1.0
MMBZ5229BS KG4 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMBZ5230BS KG5 4.7 4.47 4.94 20 19 1900 5.0 2.0
MMBZ5231BS KE1 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMBZ5232BS KE2 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMBZ5233BS KE3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMBZ5234BS KE4 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMBZ5235BS KE5 6.8 6.46 7.14 20 5 750 3.0 5.0
MMBZ5236BS KF1 7.5 7.13 7.88 20 6 500 3.0 6.0
MMBZ5237BS KF2 8.2 7.79 8.61 20 8 500 3.0 6.5
MMBZ5238BS KF3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMBZ5239BS KF4 9.1 8.65 9.56 20 10 600 3.0 7.0
MMBZ5240BS KF5 10 9.50 10.50 20 17 600 3.0 8.0
MMBZ5241BS KH1 11 10.45 11.55 20 22 600 2.0 8.4
MMBZ5242BS KH2 12 11.40 12.60 20 30 600 1.0 9.1
MMBZ5243BS KH3 13 12.35 13.65 9.5 13 600 0.5 9.9
MMBZ5245BS KH5 15 14.25 15.75 8.5 16 600 0.1 11
MMBZ5246BS KJ1 16 15.20 16.80 7.8 17 600 0.1 12
MMBZ5248BS KJ3 18 17.10 18.90 7.0 21 600 0.1 14
MMBZ5250BS KJ5 20 19.00 21.00 6.2 25 600 0.1 15
MMBZ5251BS KK1 22 20.90 23.10 5.6 29 600 0.1 17
MMBZ5252BS KK2 24 22.80 25.20 5.2 33 600 0.1 18
MMBZ5254BS KK4 27 25.65 28.35 5.0 41 600 0.1 21
MMBZ5255BS KK5 28 26.60 29.40 4.5 44 600 0.1 21
MMBZ5256BS KM1 30 28.50 31.50 4.2 49 600 0.1 23
MMBZ5257BS KM2 33 31.35 34.65 3.8 58 700 0.1 25
MMBZ5258BS KM3 36 34.20 37.80 3.4 70 700 0.1 27
MMBZ5259BS KM4 39 37.05 40.95 3.2 80 800 0.1 30
Notes: 5. Short duration pulse test used to minimize self-heating effect.
6. f = 1KHz.
MMBZ5221BS - MMBZ5259BS
0
0.1
0.2
0.3
0.4
0150
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
10
20
30
40
50
01234567891
I, ZENE
0
R
C
U
R
R
EN
T
(mA)
Z
V , ZENER VOL TAGE (V)
Fig. 2 Typ i cal Zener Br eakdown C harac te r istics
Z
T = 25°C
j
C5V6
6V8
8V2
Test Current I
20mA
Z
0
10
20
30
0
I, ZENE
R
C
U
R
R
EN
T
(mA)
Z
V , Z ENER VOL TAGE (V)
Fig. 3 T ypical Zener Breakdown Characteristics
Z
10 20 30 40
T = 25°C
j
Test current I
Z
Nominal Zener Breakdown
Voltage
10
12
18
22
27
33 36
15
39
1
10
100
1,000
110100
C
,
T
O
T
AL
C
A
P
A
C
I
T
A
N
C
E (p
F
)
T
V , NOMINAL Z ENER VOLTAGE (V)
Fig. 4 T ypical Total Capacitance vs. Nominal Zener Voltage
Z
0V BIAS
1
10
100
1,000
110
V , ZENER VOL TAGE (V)
Fi g. 5 Typica l Zener I m pedanc e C har ac t er i s t ics
Z
100
Z , ZENER IMPEDANCE( )
Z
Ω
1
10
100
110 100
P
,
P
EAK S
U
R
G
E
P
O
WE
R
(W)
PK
PULSE WIDT H (ms)
Fig. 6 Maximum Non-repetitive Surge Power
1,000
MMBZ5221BS - MMBZ5259BS
Document number: DS31039 Rev. 15 - 2 3 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221BS - MMBZ5259BS
Document number: DS31039 Rev. 15 - 2 4 of 4
www.diodes.com June 2008
© Diodes Incorporated
MMBZ5221BS - MMBZ5259BS
Ordering Information (Note 7)
Device Packaging Shipping
(Type Number)-7-F SOT-363 3000/Tape & Reel
*Add “-7” to the appropriate type number in Electrical Characteristics Table on Page 2. Example: 6.2V Zener = MMBZ5234BS-7-F.
Not es: 7. For pac kag ing det ail s, go t o our website at http ://www.diodes.com/datasheets/ap02007.pdf.
Marking Information
Kxx YM
Kxx YM
Kxx = 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 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
Code P Q 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
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 any 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.
SOT-363
Dim Min Max
A 0.10 0.30
B 1.15 1.35
C 2.00 2.20
D 0.65 Nominal
F 0.40 0.45
H 1.80 2.20
J 0 0.10
K 0.90 1.00
L 0.25 0.40
M 0.10 0.22
α 0° 8°
All Dimensions in mm
A
M
JL
D
B C
H
K
F
X
Z
Y
C
EE
G
Dimensions Value (in mm)
Z 2.5
G 1.3
X 0.42
Y 0.6
C 1.9
E 0.65
