BL
Galaxy Electrical
350mW Surface Mount Zener Diode
FEATURES
Planar Die Construction.
350mw Power Dissipation.
General purpose, medium current.
Ideally Suited For Automated Assembly Prcesses.
Production specification
MMBZ5221B-5259B
Pb
Lead-free
APPLICATIONS
350Mw Surface mount zener diode
ORDERING INFORMATION
Type No.
MMBZ5221B-MMBZ5259B
Marking
See Table on page2
Package Code
SOT-23
MAXIMUM RATING
@ Ta=25℃ unless otherwise specified
Characteristic
Symbol
Value
Unit
Forward Valtage@I
F
=10mA
V
F
0.9
V
Power Dissipation
Thermal Resistance, Junction to Ambient Air
P
d
350
mW
R
θjA
357
℃/W
℃
Operating and Storage Temperature Range
T
j
，
T
stg
-65 to+150
Notes: 1. Valid provided that device terminals are kept at ambient temperature.
2. Tested with pulses, T
P
≤1.0ms.
Document number: BL/SSZDC064
Rev.A
www.galaxycn.com
1
BL
Galaxy Electrical
350mW Surface Mount Zener Diode
Production specification
MMBZ5221B-5259B
ELECTRICAL CHARACTERISTICS
@ Ta=25℃ unless otherwise specified
Maximum Reverse
Leakage Current
Zerner Voltage Range
Type Number
Marking
Code
V
Z
@I
ZT
Nom(V)
Min(V)
Max(V)
I
ZT
(mA)
Maximum Zener Impedance
Z
ZT@
I
ZT
Z
ZK
@I
ZK
=0.25mA
(Ω)
I
R
(μA)
V
R
(V)
MMBZ5221B
MMBZ5222B
MMBZ5223B
MMBZ5225B
MMBZ5226B
MMBZ5227B
MMBZ5228B
MMBZ5229B
MMBZ5230B
MMBZ5231B
MMBZ5232B
MMBZ5233B
MMBZ5234B
MMBZ5235B
MMBZ5236B
MMBZ5237B
MMBZ5238B
MMBZ5239B
KC1
KC2
KC3
KC5
KG1
KG2
KG3
KG4
KG5
KE1
KE2
KE3
KE4
KE5
KF1
KF2
KF3
KF4
2.4
2.5
2.7
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.0
6.2
6.8
7.5
8.2
8.7
9.1
2.28
2.38
2.57
2.85
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.7
5.89
6.46
7.13
7.79
8.27
8.65
2.52
2.63
2.84
3.15
3.47
3.78
4.10
4.52
4.94
5.36
5.88
6.30
6.51
7.14
7.88
8.61
9.14
9.56
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
28
24
23
22
19
17
11
7
7
5
6
8
8
10
1200
1250
1300
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
750
500
500
600
600
100
100
75
50
25
15
10
5.0
5.0
5.0
5.0
5.0
5.0
3.0
3.0
3.0
3.0
3.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
3.0
3.5
4.0
5.0
6.0
6.5
6.5
7.0
Document number: BL/SSZDC064
Rev.A
www.galaxycn.com
2
BL
Galaxy Electrical
350mW Surface Mount Zener Diode
Production specification
MMBZ5221B-5259B
Maximum Reverse
Leakage Current
Zerner Voltage Range
Type Number
Marking
Code
V
Z
@I
ZT
Nom(V)
MMBZ5240B
MMBZ5241B
MMBZ5242B
MMBZ5243B
MMBZ5245B
MMBZ5246B
MMBZ5248B
MMBZ5250B
MMBZ5251B
MMBZ5252B
MMBZ5254B
MMBZ5255B
MMBZ5256B
MMBZ5257B
MMBZ5258B
MMBZ5259B
KF5
KH1
KH2
KH3
KH5
KJ1
KJ3
KJ5
KK1
KK2
KK4
KK5
KM1
KM2
KM3
KM4
10
11
12
13
15
16
18
20
22
24
27
28
30
33
36
39
Min(V)
9.5
10.45
11.40
12.35
14.25
15.20
17.1
19.00
20.90
22.80
25.65
26.60
28.50
31.35
34.20
37.05
Max(V)
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
29.40
31.50
34.65
37.80
40.95
I
ZT
(mA)
20
20
20
9.5
8.5
7.8
7.0
6.2
5.6
5.2
5.0
4.5
4.2
3.8
3.4
3.2
Maximum Zener Impedance
Z
ZT@
I
ZT
Z
ZK
@I
ZK
=0.25mA
(Ω)
I
R
(μA)
V
R
(V)
8.0
8.4
9.1
9.9
11
12
14
15
17
18
21
21
23
25
27
30
17
22
30
13
16
17
21
25
29
33
41
44
49
58
70
80
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
3.0
2.0
1.0
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Document number: BL/SSZDC064
Rev.A
www.galaxycn.com
3
BL
Galaxy Electrical
350mW Surface Mount Zener Diode
Production specification
MMBZ5221B-5259B
TYPICAL CHARACTERISTICS
@ Ta=25℃ unless otherwise specified
Document number: BL/SSZDC064
Rev.A
www.galaxycn.com
4
BL
Galaxy Electrical
350mW Surface Mount Zener Diode
PACKAGE OUTLINE
Plastic surface mounted package
A
E
Production specification
MMBZ5221B-5259B
SOT-23
SOT-23
Dim
A
B
C
D
Min
2.85
1.25
0.37
0.35
1.85
0.02
2.35
Max
2.95
1.35
0.43
0.48
1.95
0.1
2.45
K
B
1.0Typical
D
G
J
E
G
H
H
C
J
K
0.1Typical
All Dimensions in mm
SOLDERING FOOTPRINT
Unit : mm
PACKAGE INFORMATION
Device
MMBZ5221B-5259B
Package
SOT-23
Shipping
3000/Tape&Reel
Document number: BL/SSZDC064
Rev.A
www.galaxycn.com
5
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