DS18011 Rev. 7 - 2
1 of 3
MMBZ5221B - MMBZ5259B
www.diodes.com
MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
Planar Die Construction
350mW Power Dissipation on FR-4 PCB
General Purpose, Medium Current
Ideally Suited for Automated Assembly
Processes
Features
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
Characteristic
Symbol
Value
Unit
Forward Voltage
@ I
F
= 10mA
V
F
0.9
V
Power Dissipation (Note 1)
P
d
350
mW
Thermal Resistance, Junction to Ambient Air (Note 1)
R
qJA
357
C/W
Operating and Storage Temperature Range
T
j,
T
STG
-65 to +150
C
Case: SOT-23, 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: Marking Code (See Table on Page 2)
Weight: 0.008 grams (approx.)
Mechanical Data
A
E
J
L
M
B
C
H
G
D
K
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
E
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
a
0
8
All Dimensions in mm
* Add "-7" to the appropriate type number in Table, Sheet 2 example: 6.2V Zener = MMBZ5234B-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. For Packaging Details, go to our website at http://www.diodes.com/datasheets/ap02007.pdf.
Device
Packaging
Shipping
(Type Number)-7*
SOT-23
3000/Tape & Reel
(Note 2)
Ordering Information
DS18011 Rev. 7 - 2
2 of 3
MMBZ5221B - MMBZ5259B
www.diodes.com
Type
Number
Type
Code
Zener Voltage Range (Note 3)
Maximum Zener
Impedance (Note 4)
Maximum Reverse
Leakage Current (Note 3)
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
MMBZ5221B
KC1
2.4
2.28
2.52
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
4.4 7
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
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
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Notes:
3. Short duration test pulse used to minimize self-heating effect.
4. f = 1KHz.
Date Code Key
XXX = Product Type Marking Code
YM = Date Code Marking
Y = Year ex: N = 2002
M = Month ex: 9 = September
XXX
YM
Marking Information
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
DS18011 Rev. 7 - 2
3 of 3
MMBZ5221B - MMBZ5259B
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
V = 1V
R
V = 2V
R
1
10
100
1
10
100
P
,
PEAK
SURGE
P
O
WER
(
W)
PK
PULSE WIDTH (ms)
Fig. 4 Maximum Non-repetitive Surge Power
1000
1
10
100
1000
1
10
100
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 3 Zener Voltage vs. Zener Impedence
I = 1.0mA
Z
0
10
20
30
0
I
,
ZENER
C
URRENT
(
mA)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 6 Zener Breakdown Characteristics
10
20
30
40
T = 25C
j
Test current I
Z
10
12
18
22
27
33
36
15
39
Nominal Zener Voltage
0
10
20
30
40
50
0
1
2
3
4
5
6
7
8
9
10
I,
Z
E
N
E
R
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
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