DS31037 Rev. 5 - 2
1 of 3
MMBZ5221BW - MMBZ5259BW
www.diodes.com
MMBZ5221BW - MMBZ5259BW
200mW SURFACE MOUNT ZENER DIODE
Features
Planar Die Construction
Ultra-Small Surface Mount Package
General Purpose
Ideally Suited for Automated Assembly
Processes
Case: SOT-323, Molded Plastic
Case Material - UL Flammability Rating
Classification 94V-0
Moisture sensitivity: Level 1 per J-STD-020A
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity: See Diagram
Marking: See Table on Page 2
Weight: 0.006 grams (approx.)
Mechanical Data
A
M
J
L
E
D
B C
H
K
G
Characteristic
Symbol
Value
Unit
Forward Voltage
@ I
F
= 10mA
V
F
0.9
V
Power Dissipation (Note 1)
P
d
200
mW
Thermal Resistance, Junction to Ambient Air (Note 1)
R
qJA
625
C/W
Operating and Storage Temperature Range
T
j,
T
STG
-65 to +150
C
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
SOT-323
Dim
Min
Max
A
0.25
0.40
B
1.15
1.35
C
2.00
2.20
D
0.65 Nominal
E
0.30
0.40
G
1.20
1.40
H
1.80
2.20
J
0.0
0.10
K
0.90
1.00
L
0.25
0.40
M
0.10
0.18
a
0
8
All Dimensions in mm
* Add "-7" to the appropriate type number in Table 1 from Sheet 2 example: 6.2V Zener = MMBZ5234BW-7.
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. Short duration test pulse used to minimize self-heating effect.
3. f = 1KHz.
4. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Device
Packaging
Shipping
(Type Number)-7*
SOT-323
3000/Tape & Reel
Ordering Information
(Note 4)
DS31037 Rev. 5 - 2
2 of 3
MMBZ5221BW - MMBZ5259BW
www.diodes.com
Electrical Characteristics Table 1
@ T
A
= 25
C unless otherwise specified
Notes:
2. Short duration test pulse used to minimize self-heating effect.
3. f = 1KHz.
Type
Number
Marking
Code
Zener Voltage Range (Note 2)
Test
Current
Maximum Zener
Impedance (Note 3)
Maximum Reverse
Leakage Current (Note 2)
V
Z
@ I
ZT
I
ZT
Z
ZT @
I
ZT
Z
ZK
@ I
ZK
= 0.25mA
I
R
@ V
R
Nom (V)
Min (V)
Max (V)
mA
W
mA
V
MMBZ5221BW
KC1
2.4
2.28
2.52
20
30
1200
100
1.0
MMBZ5223BW
KC3
2.7
2.57
2.84
20
30
1300
75
1.0
MMBZ5225BW
KC5
3.0
2.85
3.15
20
30
1600
50
1.0
MMBZ5226BW
KG1
3.3
3.14
3.47
20
28
1600
25
1.0
MMBZ5227BW
KG2
3.6
3.42
3.78
20
24
1700
15
1.0
MMBZ5228BW
KG3
3.9
3.71
4.10
20
23
1900
10
1.0
MMBZ5229BW
KG4
4.3
4.09
4.52
20
22
2000
5.0
1.0
MMBZ5230BW
KG5
4.7
4.47
4.94
20
19
1900
5.0
2.0
MMBZ5231BW
KE1
5.1
4.85
5.36
20
17
1600
5.0
2.0
MMBZ5232BW
KE2
5.6
5.32
5.88
20
11
1600
5.0
3.0
MMBZ5234BW
KE4
6.2
5.89
6.51
20
7.0
1000
5.0
4.0
MMBZ5235BW
KE5
6.8
6.46
7.14
20
5.0
750
3.0
5.0
MMBZ5236BW
KF1
7.5
7.13
7.88
20
6.0
500
3.0
6.0
MMBZ5237BW
KF2
8.2
7.79
8.61
20
8.0
500
3.0
6.5
MMBZ5239BW
KF4
9.1
8.65
9.56
20
10
600
3.0
7.0
MMBZ5240BW
KF5
10
9.50
10.50
20
17
600
3.0
8.0
MMBZ5241BW
KH1
11
10.45
11.55
20
22
600
2.0
8.4
MMBZ5242BW
KH2
12
11.40
12.60
20
30
600
1.0
9.1
MMBZ5243BW
KH3
13
12.35
13.65
9.5
13
600
0.5
9.9
MMBZ5245BW
KH5
15
14.25
15.75
8.5
16
600
0.1
11
MMBZ5246BW
KJ1
16
15.20
16.80
7.8
17
600
0.1
12
MMBZ5248BW
KJ3
18
17.10
18.90
7.0
21
600
0.1
14
MMBZ5250BW
KJ5
20
19.00
21.00
6.2
25
600
0.1
15
MMBZ5251BW
KK1
22
20.90
23.10
5.6
29
600
0.1
17
MMBZ5252BW
KK2
24
22.80
25.20
5.2
33
600
0.1
18
MMBZ5254BW
KK4
27
25.65
28.35
5.0
41
600
0.1
21
MMBZ5255BW
KK5
28
26.60
29.40
4.5
44
600
0.1
21
MMBZ5256BW
KM1
30
28.50
31.50
4.2
49
600
0.1
23
MMBZ5257BW
KM2
33
31.35
34.65
3.8
58
700
0.1
25
MMBZ5258BW
KM3
36
34.20
37.80
3.4
70
700
0.1
27
MMBZ5259BW
KM4
39
37.05
40.95
3.2
80
800
0.1
30
Month
Jan
Feb
March
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Code
1
2
3
4
5
6
7
8
9
O
N
D
Year
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
Code
J
K
L
M
N
P
R
S
T
U
V
W
Date Code Key
XXX = Product Type Marking Code (See Table 1)
YM = Date Code Marking
Y = Year ex: N = 2002
M = Month ex: 9 = September
XXX
YM
Marking Information
DS31037 Rev. 5 - 2
3 of 3
MMBZ5221BW - MMBZ5259BW
www.diodes.com
0
0.1
0.2
0.3
0.4
25
0
50
75
100
125
150
P,
P
O
WER
D
ISSIP
A
T
I
O
N(
W
)
D
T , AMBIENT TEMPERATURE (
C)
A
Fig. 1 Power Dissipation vs Ambient Temperature
C
,
T
O
T
A
L
C
AP
ACIT
ANCE
(pF)
T
10
100
1000
10
100
1
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 2 Total Capacitance vs Nominal Zener Voltage
T = 25 C
j
f = 1MHz
V = 1V
R
V = 2V
R
1
10
100
1
10
100
P
,
PEAK
SURGE
P
OWER
(
W)
PK
PULSE WIDTH (ms)
Fig. 4 Maximum Non-repetitive Surge Power
1000
0
10
20
30
40
50
0
1
2
3
4
5
6
7
8
9
10
I
,
ZENER
C
URRENT
(
mA
)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 5 Zener Breakdown Characteristics
T = 25C
j
5V6
6V8
8V2
Test Current I
Z
20mA
0
10
20
30
0
I
,
ZENER
CURRENT
(mA)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 6 Zener Breakdown Characteristics
10
20
30
40
T = 25C
j
Test current I
Z
Nominal Zener Voltage
10
12
18
22
27
33
36
15
39
1
10
100
1000
1
10
100
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 3 Zener Voltage vs. Zener Impedence
I = 1.0mA
Z
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